microprocessor - transcold the “set” key to validate the new selected value or to go to the next...

Operation & Service Manual

Carrier Transicold Europe 16/02/12 Pulsor - Microprocessor/Rev- #1/66

MICROPROCESSOR



Description .................................................................................................................................................................................... 4PC Board .................................................................................................................................................................................................................... 4Connectors ................................................................................................................................................................................................................. 5

MP connector ................................................................................................................................................................................................................................ 5CBUSd connector ......................................................................................................................................................................................................................... 7

Supply voltage ............................................................................................................................................................................................................ 8

Unit Configurations ...................................................................................................................................................................... 9Accessibility ................................................................................................................................................................................................................ 9Values ....................................................................................................................................................................................................................... 10

Operation ..................................................................................................................................................................................... 15COOL mode .............................................................................................................................................................................................................. 15

Description .................................................................................................................................................................................................................................. 15Pre-heating & CFM ..................................................................................................................................................................................................................... 16Starting sequence ....................................................................................................................................................................................................................... 17

Definition ................................................................................................................................................................................................................................ 17Logic ....................................................................................................................................................................................................................................... 18Short starting .......................................................................................................................................................................................................................... 19Normal starting ....................................................................................................................................................................................................................... 20Long starting ........................................................................................................................................................................................................................... 21Liquid slugging starting ........................................................................................................................................................................................................... 22

Control modes ............................................................................................................................................................................................................................. 23Overrides .................................................................................................................................................................................................................................... 25Cool priority ................................................................................................................................................................................................................................. 27Mode change .............................................................................................................................................................................................................................. 29Stopping sequence ..................................................................................................................................................................................................................... 30

HEAT mode .............................................................................................................................................................................................................. 31Description .................................................................................................................................................................................................................................. 31Starting/Stopping sequences ...................................................................................................................................................................................................... 32Overrides .................................................................................................................................................................................................................................... 33

MICROPROCESSOR Table of content



Definition ..................................................................................................................................................................................................................................... 34Regulation closed to set point ..................................................................................................................................................................................................... 35Overrides .................................................................................................................................................................................................................................... 36

DEFROST ................................................................................................................................................................................................................. 38Description .................................................................................................................................................................................................................................. 38Operation .................................................................................................................................................................................................................................... 40Defrost logic ................................................................................................................................................................................................................................ 41

Manual defrost ........................................................................................................................................................................................................................ 41Automatic defrost ................................................................................................................................................................................................................... 42Scheduled defrost .................................................................................................................................................................................................................. 44

Stopping sequence ..................................................................................................................................................................................................................... 45

Data & security ............................................................................................................................................................................ 46Alarm types ............................................................................................................................................................................................................... 46Alarms list ................................................................................................................................................................................................................. 47

Condenser .................................................................................................................................................................................................................................. 47Compartment 1 & 2 ..................................................................................................................................................................................................................... 53Generator .................................................................................................................................................................................................................................... 56Inverter ........................................................................................................................................................................................................................................ 58

Software evolution ...................................................................................................................................................................... 65

MICROPROCESSOR Table of content



The Puslor microprocessor is the same for all version(single or multi-temp) as well for the software

1. Microprocessor Sticker

2. +12 or 24 Vdc Battery (M6 stud)

3. +12 or 24 Vdc Auxiliary (M5 stud)

4. MP connector

5. Ground ( M6 stud)

6. Cap Seal

The microprocessor sticker contains the following information:

7. Part number

8. Serial number

9. Software revision

Microprocessor Description PC Board

4

2

3

7

9

8

5

1

6



CN1 - 1 Signal CAN2H

CN1 - 2 Signal CAN1H

CN1 - 3 Power output LED- out

CN1 - 4 Not used

CN1 - 5 Power output V-cab2

CN1 - 6 Power output V-cab1

CN1 - 7 Analog input CSP

CN1 - 8 Power output 5Vdc CSP

CN1 - 9 Analog input CDP

CN1 - 10 Power output 5Vdc CDP & CDT

CN1 - 11 Power output 5Vdc DTTb sensor

CN1 - 12 Power output 5Vdc DTTa sensor

CN1 - 13 Power output 5Vdc RATb sensor

CN1 - 14 Power output 5Vdc RATa sensor

CN1 - 15 Power output 5Vdc AAT sensor (option)

CN1 - 16 Power output 12 or 24Vdc DWRb (10 Amps max)

CN1 - 17 Digital input DSb

CN1 - 18 Digital input DSa

Microprocessor Description Connectors MP connector



CN1 - 19 Power output 12 or 24 Vdc DWRa (10 amps max)

CN1 - 20 Power output 12 or 24 Vdc PEV (2 amps max)

CN1 - 21 PWM signal EFMc (speed control)

CN1 - 22 Power output 12 or 24 Vdc EFMc (12.6 amps max)

CN1 - 23 Power output 12 or 24 Vdc LVb (2amps max)

CN1 - 24 PWM signal EFMb (speed control)

CN1 - 25 Power output 12 or 24 Vdc EFMb (12.6 amps max)

CN1 - 26 Power output 12 or 24 Vdc LVa (2 amps max)

CN1 - 27 PWM signal EFMa (speed control)

CN1 - 28 Power output 12 or 24 Vdc EFMa (12.6 amps max)

CN1 - 29 Signal CAN2L

CN1 - 30 Signal CAN1L

CN1 - 31 Digital out put Wake up-

CN1 - 32 Digital input ON

CN1 - 33 Ground CAN2

CN1 - 34 Ground CAN1

CN1 - 35 Digital input Ignition key

CN1 - 36 Groud output CSP

CN1 - 37 Analog input CDT

CN1 - 38 Ground output CDP & CDT

CN1 - 39 Analog input DTTb sensor

CN1 - 40 Analog input DTTa sensor

CN1 - 41 Analog input RATb sensor

CN1 - 42 Analog input RATa sensor

CN1 - 43 Analog input AAT sensor (Option)

CN1 - 44 Ground output DWRb

CN1 - 45 Digital Output DSb

CN1 - 46 Digital output DSa

CN1 - 47 Ground output DWRa

CN1 - 48 Ground output PEV

CN1 - 49 Digital input EFMc (Tachometer return)

CN1 - 50 Ground output EFMc-

CN1 - 51 Ground output LVb

CN1 - 52 Digital input EFMb (Tachometer return)

CN1 - 53 Ground output EFMb

CN1 - 54 Ground output LVa

CN1 - 55 Digital input EFMa (Tachometer return)

CN1 - 56 Ground output EFMa

Microprocessor Description Connectors MP connector



The CAN BUSd (d=display) is used for - the communication between the cab command and the microprocessor trough CAN 1 - the communication between a third device and the microprocessor trough CAN 2

The microprocessor is also communicating with the inverter through an parallel harness of the CAN1

14 way sealed connector=CAN1

Coming from Mp connector Can bus

connector CN1 - 1 Signal CAN2H Pin 8 CN1 - 2 Signal CAN1H Pin 1 CN1 - 3 Power output LED- out Pin 12 CN1 - 5 Power output V-cab2 Pin 11 CN1 - 6 Power output V-cab1 Pin 6 CN1 - 29 Signal CAN2L Pin 9 CN1 - 30 Signal CAN1L Pin 2 CN1 - 31 Digital out put Wake up Pin 5 CN1 - 32 Digital input ON Pin 4 CN1 - 33 Ground CAN2 Pin 10 CN1 - 34 Ground CAN1 Pin 3

Microprocessor Description Connectors CBUSd connector

From Micro To main harness (cab command)



The micro feed taken directly from - Road mode: by the main battery fuse 80

Amps - STDBY mode: by the inverter

Minimum voltage 10 Vdc Maximum voltage 32 Vdc Micro consumption when unit is OFF by cab command

<5 mA

Micro consumption when unit is OFF by ignition

<5 mA

Micro external temperature range -40°C / +75°C (-40°F / +167°F)

Internal temperature safety Stop if T°> 85°C Restart if T°< 65°C

Consumption of the micro when it wakes up

1 A for 10 seconds

Microprocessor Description Supply voltage



BAtt

OR

IMPORTANT

If, when settings are adjusted, no key is activated within 10 seconds, the system reverts to displaying the box temperature. All changes made are not recorded.

The «Unit Configuration» menu is accessible when the Cab Display is active and box temperature is displayed.

1. Push into the thin hole on the rear of the cab command to access the configuration menu

2. The first configuration “BAtt” is displayed for 3 seconds.

3. Battery voltage value is displayed.

4. Press “+” or ”–“ key to select another value. The new value is flashing for 10 seconds.

5. Press the “SET” key to validate the new selected value or to go to the next parameter.

Note: to exit this menu press “ON” key.

Microprocessor Unit Configurations Accessibility



Display for 3 seconds Description Available values for 10 seconds

1. BAtt Battery voltage of the unit 12V or 24V

2. Cont Condenser Size Lo = low size (Pulsor 350 / 400) or Hi = High size (Pulsor 500 / 600 Mt)

3. CEt Compartment Evaporator Type For Mt° unit, each compartment has to be adjusted

0000 = No Evaporator 605= MPS 600l 855 = MPL 850 1105 = MPL 1100 600= MCS 600 850 = MCL 850 U855 = MCV 850 1100 = MCL 1100

4. HArn Compartment on the cab command display (Only for Mt°) NOT YET AVAILABLE

A = Evaporator 1 will be displayed on compartment 1 of the cab command (Factory setting A) B = Evaporator 1 will be displayed on compartment 2 of the cab command

5. CS Compartment Size 0 = Gradual pulldown 1 = Medium pulldown 2 = Fast pulldown 3 = Future development Factory setting by default : 1

Microprocessor Unit Configurations Values




6. EFS Evaporator Fan motor Speed (Not available for MCV 850 equipped with a fixed speed fan) The parameter does not appear. with Soft 0.890 (since soft 0.840 Spal EFM are implemented)

Evaporator Type: SPd1 = low speed (70%) SPd2 = medium speed (85%) SPd3 = high speed (100%) Factory setting by default : SPd3

7. GEn Generator Type GEn3 = Generator type if Gen4 is not suitable. GEn4 = Generator type for all Pulsor units (G4 by default)

8. SCAC Standby Consumption (inverter configuration) (only for single phase) The parameter does not appear in the case of unit in 400V/3 or 230V/3

Standby Consumption in 230/1/50&60hz according to the customer network. 16A =Compressor/heater power limited at 1300W for mono temperature, 1100W for multi temperature (in multi temperature more power is given to the EFM) 32A = Compressor/heater power limited at 2200W for both mono temperature and multi temperature Factory setting by default : 16A

9. dISP Data Display of the unit °C = Metric display : Temperature in °C and pressure in Bars °F = Imperial display : Temperature in °F and pressure in PSI Factory setting by default : °C

Microprocessor Set Unit Configurations Values




10. SPd Set Point Display Temperatures Displayed with integer or decimal Int : Box T° & set point display with integer value i.e : -20°C dEC : Box T° & set point display with decimal value i.e : -20.5 (Temperature & set point will be displayed alternatively with unit of measurement) Factory setting by default : Int

11. USL Upper dead band for the regulation in perishable & frozen

°C : From 1° to 3° with 0.5° step (Factory setting at 1°C) °F : From 1.8°to 5.4° with 0.9° step (Factory setting at 1.8°F)

12. LSL Lower dead band for the regulation in perishable

°C :From -1° to - 3° with -0.5° step (Factory setting at -1°C) (set point > -12°C,

10.4°F) °F : From -1.8°to -5.4° with -0.9° step (Factory setting at -1.8°F)

13. LSLF Lower dead band for the regulation in frozen

Available values displayed for 10 seconds: (set point < -12°C,

10.4°F) °C : From -1° to -5° with -0.5° step (Factory setting at -2°C) °F : From -1.8° to -9° with -0.9° step (Factory setting at -3.6°F)





14. Hour Adjust actual hours (micro internal clock)

Adjust the real time by pressing the “+” to increase hours and “-” key to decrease minutes. The format is “hh:mm”. A long press on “+” key increases the hours value of 10 A long press on “-” key decreases the minutes value of 10

15. dAtE Current date (micro internal clock) Adjust the real date by pressing the “+” to increase days and “-” key to decrease months. The format is “dd:mm” A long press on “+” key increases the days value of 10 A long press on “-” key decreases the months value of 10

16. YEAr Current year (micro internal clock) Adjust the real year by pressing the “+” or “-” key (by default 2000)

17. door Door switch option YES : Door switch installed (NO, Contact closed/ Door Closed) NO : Door switch not installed (Factory setting)

18. dur Drain water resistor YES : Drain water resistor installed. (Factory setting for MT) NO : Drain water resistor not installed. (Factory setting for Monotemp)

19. SEr Maintenance hours meter NO : No maintenance message YES : Maintenance message activated every 1000 hours (Factory setting) rSEt : Reset the maintenance counter





20. CAr Compressor alert NO: No Compressor maintenance message YES: Compressor Maintenance message activated after 500 hours running out of compressor envelope rSt: Reset the Compressor maintenance counter.

21. Loch Lock hour meters Loch appears only after a micro replacement and allows the unit to run without entering all the hour meters. Hour meters must be filled in with the help of the service tool.

YES: Hour meters are locked (Factory setting for spare parts only) NO : Hour meters are not locked.




The aim of the cool mode is to ensure the cool production thanks to the variable speed compressor, keeping the compressor running within its envelope

. The envelope is defined by the pressure and temperature ranges in which the compressor must operate.

COMPRESSOR ENVELOPE

Up to 5 inputs can be used to control the cool mode:

RAT “normal” mode

CSP

CDT

CDP

CDP/CSP ratio

Before unit operates in cooling mode, pre-heating and starting sequences are initiated.

Microprocessor Operation COOL mode Description



The pre-heating consists in activating alternatively each coil of the compressor motor in order to heat the compressor oil.

The pre-heating is activated if the compressor is stopped for more than 1 hour AND if the CDT is lower than 20°(CDT represents the outdoor air temperature if the compressor

C is

stopped for a significant time).

The pre-heating duration depends on the CDT and compressor type (data for 230V/3 not yet available): During the pre heating, cab command displays “cpht”.

A pre-heating timer (15 min) is activated when the pre-heat begins. If the pre-heat sequence is stopped:

- If new start is required within those 15 min => pre-heat is activated for the remaining time, - If new start is required after those 15 min => the timer is reset and the pre-heating will last the whole needed time.

Example: Compressor stopped 2h ago and CDT at – 8°C. The driver starts the unit at 11H00 => Pre-heating sequence = 6 min - The driver stops the unit at 11H04. Then he starts it again 11 min after at 11H15. The pre-heating last 2 min more,

then the starting sequence is launched. - The driver stops the unit at 11H04. Then he starts it again 16 min after at 11H20. The pre-heating is reset to 6 min if

the CDT is still between -6°C to -15°C. - The driver stops the unit at 11H08. The pre-heating was done and the starting sequence began normally.

Nota on CFM:

CFM Run in cool mode (always) In other mode ,CFM runs only if Inverter box >20°C

Microprocessor Operation COOL mode Pre-heating & CFM

CDT 400V/3 compressor 20°C to -5°C 3mn -6°C to -15°C 6mn -16°C to -20°C 9mn -21°C to -25°C 12mn



The aim of the starting sequence is to slowly start the unit to prevent a compressor failure because of refrigerant condensation in oil sump.

The starting sequence will be engaged each time the compressor starts

There are 4 different starting sequences in cool mode depending on:

.

- how long the compressor have not been running - the Compressor Discharge Temperature (CDT)

1. Short starting sequence,

2. Normal starting sequence,

3. Long starting sequence,

4. Liquid slugging starting sequence.

Microprocessor Operation COOL mode Starting sequence Definition



* If unit has been in heat or defrost mode for at least 10 min with compressor stopped, liquid slugging starting sequence will be selected.

Microprocessor Operation COOL mode Starting sequence Logic

Compressor Off time less than 30 mn Short starting sequence *

CDT < 20°C Compressor Off time between 30 mn and 1 hour

yes Long starting sequence

Normal starting sequence *

Compressor Off time > 1 hour

CDT > 40°C

CDT > 5°C and CDT < 40°C

CDT < 5°C

no

Short starting sequence *

Long starting sequence

Normal starting sequence *



- Stop EFM ( if EFM is ON during regulation) - Start CFM (CFM is always activated in cool mode) - Open PEV - Start compressor at 30 Hz

- Open LV 2 seconds after:

- Start EFM

- Close PEV 3 seconds after:

- Ramp up compressor speed if needed (1Hz/s)

Microprocessor Operation COOL mode Starting sequence Short starting



- Stop EFM ( if EFM is ON during regulation) - Start CFM - Open PEV - Start compressor at 30 Hz


- Start EFM

Close PEV

20 seconds after:

Ramp up compressor speed if needed (1Hz/s)

20 seconds after:

Microprocessor Operation COOL mode Starting sequence Normal starting




- Open LV 5 min after:

- Start EFM

- Close PEV 2 min after:

During 2min 30 sec.: Run the compressor at 30Hz.

During 2min 30 sec.: Ramp up compressor 1Hz/5s limited to 60Hz.

During 3min 30 sec.: Run the compressor at 60 Hz and after those 3min 30 sec, ramp up until 80Hz if needed.

Microprocessor Operation COOL mode Starting sequence Long starting



If unit has been in heat or defrost mode for at least 10 min with compressor stopped, the liquid slugging starting sequence has the priority on the short and normal starting sequences.



- Start EFM

- Close PEV 40 seconds after:

- Ramp up compressor speed (1Hz/s) if needed During 3min: Run the compressor at 30Hz

Microprocessor Operation COOL mode Starting sequence Liquid slugging starting



Compressor speed variation is controlled by 5 modes monitored at any time by the micro:

- 1 normal mode controlled by RAT, - 4 limitation modes controlled by CDT, CDP, CSP and CDP/CSP ratio

Normal mode By default compressor speed regulation is controlled by RAT

CDT limitation mode

CDT limitation mode is the most severe => it has the priority- If CDT reaches an abnormal temperature= CDT shutdown, CDT limitation mode is activated to go back inside the

compressor envelope.

on CDP, CSP and CDP/CSP limitation modes,

- To allow a higher discharge temperature during the pull down, two CDT shutdown values are used and a pull down timer is applied. It is incremented each minute if CDT exceeds 105°C and is reset daily at 0h00. If this timer is less than 90 minutes, CDT shutdown is 115°C, otherwise it is 106,5°C.

- If CDT reaches CDT shutdown value despite CDT limitation mode =>A051 is displayed.

CDP limitation mode

- If CDP reaches an abnormal high pressure=CDP shutdown, CDP limitation mode is activated to go back inside the compressor envelope.

- CDP shutdown is represented by the upper red line on the compressor envelope: it depends of the CSP value. - If CDP reaches CDP high shutdown value despite CDP limitation mode =>A052 is displayed.

CSP limitation mode

- If CSP reaches an abnormal pressure, CSP limitation mode is activated to go back inside the compressor envelope. Despite CSP limitation activation, 3 shutdown limits could be triggered: CSP reaches CSP Low shutdown (0,06 bar) for 30 seconds =>A053 is displayed and unit shuts down. CSP reaches CSP Safety shutdown (-0,4 bar) => A054 is displayed and unit shuts down. CSP reaches CSP High shutdown (6.2bar) => A055 is displayed

(alarm inhibited for 5 minutes after starting sequence is completed).

Microprocessor Operation COOL mode Control modes



RATIO CDP/CSP limitation mode

- If CDP reaches an abnormal low pressure, Ratio CDP/CSP limitation mode is activated to go back inside the compressor envelope.

- CDP shutdown is represented by the lower red line on the compressor envelope: it depends of the CSP value.

- If CDP reaches CDP low shutdown value =>A056 is displayed.

Microprocessor Operation COOL mode Control modes



Overrides in COOL mode

Compressor minimum on-time

If compressor is requested to stop (regulation) and its running time is < 2 minutes: Compressor continues to run until those 2 minutes are elapsed EFM speed is reduced to 25% to reduce the cooling power for EBM EFM. SPAL EFM are shut off. (Nota: this override is not applied in case of OFF request from the cab command/service tool)

Compressor starting sequences

In case of PEV failure during starting sequence: Compressor frequency is limited at 30Hz for 15 minutes In case of PEV failure during stopping sequence:

PEV is opened one additional minute after A060 (pressure equalization failure) appears. This alarm is reset when pressure equalizes naturally. At next starting sequence, compressor frequency is limited to 30Hz during 15 minutes.

Compressor envelope limitation 40-70 Hz If CDP is in “40-70 Hz” zone: compressor speed is limited to 70 Hz

Compressor limitation 30-60 Hz If CSP<0,6 bar (8.7 PSI): compressor speed is limited to 60 Hz

Microprocessor Operation COOL mode Overrides



Low temperature in other compartment

For Mt° unit: -if one compartment is in HEAT mode and the other in cool mode - if compressor within its minimum On-Time (2min) - and if the compartment in COOL mode has its set point ≥ 0 and its

RAT<0 : maximum compressor speed is limited to 40 Hz

Door management

If unit equipped with door switch option and door is opened: compartment is switched to NULL mode, EFM is forced to stop even if EFM is

set to “ON” during regulation Compressor is stopped (mono-temp) even if compressor minimum on-time

unexpired. Liquid valve of the opened compartment is closed. LV is closed (multi-temp) “Door” is displayed alternatively with RAT on the cab command It is not necessary to press ON when door is closed again

Post defrost After a defrost EFM start is 60 seconds delayed in fresh and 180 seconds in frozen to avoid water projection

Microprocessor Operation COOL mode Overrides



The “cool priority” function enables the microprocessor to manage cooling automatically for Multi Temp units. 3 configurations are available for cooling priority management:

Auto : The priority is given to the compartment with the lowest set point

1 : The priority is given to compartment 1

2 : The priority is given to compartment 2

“Auto” priority cooling

“Auto” priority cooling is controlled by the Liquid Valve (LV) regarding several conditions :

Compartment with the lowest set point =”Priority”; other compartment =”Not priority”.

Priority compartment liquid valve is always fully opened,

If the 2 compartments have a similar set point (+/- 2°C), the smallest evaporator is the Priority. If evaporators are the same there is no pulsing (LV 100% opened).

Not priority compartment liquid valve is fully opened until Setpoint + USL then it is pulsing between 17% to 100% (fully opened) (5s opened/ 25s closed).

If one compartment is in cool mode and the other in heat mode, the priority is given to the cool mode.

Microprocessor Operation COOL mode Cool priority



“Compartment 1 or 2” priority cooling

“1 or 2” priority cooling is controlled by the Liquid Valve (LV) regarding several conditions :

The selected compartment is the Priority, other compartment is the Not Priority,

Not Priority compartment liquid valve starts pulsing at 17% until the priority compartment reaches its “setpoint+USL/2” value,

Priority compartment liquid valve is always fully opened,

Not Priority compartment liquid valve is pulsing from 17% to 100% (fully opened) (5s opened/ 25s closed) when the priority compartment RAT is between “setpoint+USL/2” and “setpoint-LSL/2”.

Microprocessor Operation COOL mode Cool priority



Following modes are accessible from cool mode (Mode change).

NULL mode

if RAT ≤ Set point + LSL/2

if door is opened

in case of standby power supply loss

in case of alarm Defrost mode if a defrost is requested

If one of these modes is requested, the stopping sequence is launched.

Microprocessor Operation COOL mode Mode change



Microprocessor Operation COOL mode Stopping sequence

COOL mode

Stop compressor

Open PEV until delta pressure (HP-LP) decreases to less than 2 bar with a 20 second timeout

Stop EFM

Close LV and PEV

Run EFM if set EFM running in NULL mode

Stop CFM NOTA : if door is opened, EFM is stopped and is not allowed to run until door closing

Reduce compressor speed to 30Hz for 1 second



Description - The heating is ensured by high voltage DC electrical heaters - Heat mode is active only on Perishable Mode ( set point > -12°C) - Electrical power is reduced when RAT is closed to the set point.

Following modes are accessible from heat mode (Mode change)

- Active mode : in case of double supply detection - NULL mode : if set point is reached, or in case of failure/alarm

Priority in multi-temp application

- If both compartments are in heat mode, a coefficient is applied to share the heating power proportionally. - The total heater power will never exceed 3000W (even with a generator 4). The calculation is done as follow: Coef = P1 / (P1+P2) where P1 and P2 are the nominal heater power of each evaporator

Calculated power delivered to compartment 1 = 3000 * Coef Watts Calculated power delivered to compartment 2 = 3000 - (3000*Coef) Watts

Example of calculation with Cpt 1 equipped with evaporator MCL1100 (max heater power=3000W) and Cpt 2 with MCL 850 (max heater power=2100W):

Coef= 3000 / (3000+2100) = 0.59

The Cpt1 will receive 3000 * 0.59 = 1764 Watts, Cpt2 will receive 3000 - 1764= 1236 Watts

- If one compartment is in cool mode and the other in heat mode, the priority is given to the cool mode.

Microprocessor Operation HEAT mode Description



Microprocessor Operation HEAT mode Starting/Stopping sequences

If EFM configured to stop in NULL mode, start Post-ventilation (30”).

If HEAT mode has run more than 10 minutes and compressor was stopped

more than 10 minutes, then force the liquid slugging cool starting sequence at next

compressor start

Heater stops

Heater starts

EFM energized

STOPPING SEQUENCE STARTING SEQUENCE

The inverter energizes each component with a delay of ONE SECOND to prevent voltage drop.

CFM is off during heat mode except if inverter cooling is requested.



Overrides in HEAT mode

Door management

If unit equipped with door switch option and door is opened: compartment is switched to NULL mode, EFM is forced to stop even if EFM is

set to “ON” during regulation Heating capacity is stopped (mono-temp) “Door” is displayed alternatively with RAT on the cab command

It is not necessary to press ON when door is closed again, the unit will restart

Transparent defrost

If heat mode is activated after a cool mode and the 4 following conditions are met, a transparent defrost is activated in order to avoid water projections

- DTT < 2°C :

- RAT < 3°C - Set point has been changed and is ≥ 0 - Cool mode runtime was > 20 minutes

Heating power with air flow reduced to 25% of the maximum power (only for EBM fans) is activated (to avoid water projection). With Spal evaporators, this override does not exist anymore.

NOTA: - This override is ignored if evaporator type is MCV850 because airflow

design does not cause water projection.

Microprocessor Operation HEAT mode Overrides



Description: - In NULL mode, the compressor and the CFM are stopped (CFM can be started if inverter needs to be cooled), - By default EFM is set to OFF during NULL mode. If continuous airflow is needed, it can be turned to ON in

“user functions”.

At power ON, NULL mode is activated for at least 30 seconds in road mode.

Following modes are accessible from NULL mode (Mode change): - Active mode if compartment is manually switched off or in case of power supply loss, - Cool mode if RAT is too high, - Heat mode if RAT is too low (perishable transport only) - Defrost mode if manual defrost is requested or if defrost conditions are met.

Microprocessor Operation NULL mode Definition



(1) If coming from COOL mode (2) If coming from HEAT mode (3) If “compressor min on-time” override has been activated

For frozen set point, there is no heat mode and LSLF is used instead of LSL.

These 6 minutes delays are not applied in case of setpoint change.

1. If previous mode was COOL and if RAT > Set point + USL/2

Two ways to enter in COOL mode:

=> Compartment enters in COOL mode.

2. If previous mode was HEAT mode and if HEAT mode is finished since more than 6 minutes (=delay) and if RAT > Set point + USL

=> Compartment enters in COOL mode.

1. If previous mode was HEAT mode and if RAT < Set point + LSL/2

Two ways to enter in HEAT mode:

=> Compartment enters in HEAT mode.

2. If previous mode was COOL mode and if COOL mode is finished since more than 6 minutes and if RAT < Set point + LSL

=> Compartment enters in HEAT mode.

Microprocessor Operation NULL mode Regulation closed to set point

HEAT

NULL

COOL Delay

Delay



Overrides in NULL mode

High temp security

If “Box over-heating” alarm is active (A156/A256): Run EFM at maximum speed in order to avoid high temperature in the evaporator If unit previously connected to power network and disconnected : road/standby relay (inside

inverter) automatically switches into road mode (vehicle battery) to ensure the post-ventilation NOTA:

- Unit goes in OFF after post-ventilation.

Post-ventilation

If EFM is configured to stop in NULL mode: To avoid heat accumulation inside the evaporator, after heating sequence completion, run EFM at

maximum speed for 30 seconds if the heater has run more than 2 minutes, otherwise for 15 seconds.

If unit previously connected to power network, the road/standby relay automatically switches into road mode (vehicle battery) to ensure the post-ventilation.

NOTA: - Unit goes in OFF after post-ventilation, - This override is inhibited in case of EFM wrong speed failure (A165/A265).

Equalization

If “PEV Equalization failure” alarm is active: Re-open the PEV for 1 minute If unit previously connected to power network, the road/standby relay automatically switches into

road mode (vehicle battery) to ensure the equalization.

NOTA: while this override is active, switching unit to OFF is not allowed.

Microprocessor Operation NULL mode Overrides



Door management

If unit equipped with door switch option and door is opened: EFM is stopped Compartment is not allowed to switch neither in COOL mode nor in HEAT mode

It is not necessary to press ON when door is closed again, the unit will restart

Air sampling

If EFM is configured to stop in NULL mode: EBM fans: EFM is forced at 70% for 1 minute every 5 minutes: the aim is to mix the air to get a

right box temperature information Spal fans: EFM is forced at 100% for 1 minute every 5 minutes: the aim is to mix the air to get a

right box temperature information

Microprocessor Operation NULL mode Overrides



The Defrost mode is ensured by means of high voltage DC electrical heaters. The maximum allowed power is used to energize the heaters.

There are 3 different possibilities to request a Defrost: - Manual: Selected from the cab command or the service tool. - Scheduled: Timed-scheduled configuration through the cab command. Every X hours, the compartment will

go into Defrost. - Automatic: The control calculates the next defrost session according to the energy consumed during the

previous defrost. A Defrost sequence can be activated if all following conditions are met:

- Defrost is requested (Automatic, scheduled or manual) - DTT < 5°C ( 41°F) - No other compartments already in defrost - Compartment in COOL mode for scheduled, automatic and manual requests - Compartment in NULL or HEAT mode for a manual request - Door closed (if option activated)

Microprocessor Operation DEFROST Description



When running in defrost, compartment can only switch to null mode: - If compartment is manually switched off or in case of power supply loss, - If defrost is completed, - If defrost duration is too long, - In case of alarm.

Following modes are accessible when DEFROST sequence is completed: - COOL mode if previous mode was cool and if there is a cool demand - HEAT mode if previous mode was heat and if there is a heat demand - HEAT mode if RAT is too low - Otherwise, NULL mode - DEFROST mode if manual defrost is requested or if defrost conditions are met.

Microprocessor Operation DEFROST Description



During the Defrost:

The RAT is hidden from the cab command, and “dFSt” is displayed and after the defrost completion: during 2 minutes for fresh and during 4 minutes for frozen.

The green led keeps running as usual.

The “Out of Range” alarms (A150/A250) are inhibited.

In multi temp, when a compartment is in defrost mode (scheduled or auto request), the other compartment (heat or cool mode) gets the rest of the available power. Restart of cool mode is not allowed during the defrost of the other compartment.

When DTT reached a 3°C threshold, the heating power is reduced by 50%.

Microprocessor Operation DEFROST Operation



Manual Defrost starting:

The manual defrost is activated from the cab command or from the service tool regardless of the defrost configuration parameter.

On Multi-temp units, if the defrost is requested on all active compartments at the same time, it will occur sequentially, without 20 minutes delay between each defrost.

On Multi-temp units, the priority is given to the compartment with the highest set point.

Starting sequence: - EFM stops - Heater starts

Defrost ending:

Normal completion - The defrost session is completed when DTT reaches

12°C. - The EFM restarts after a delay of 1 minute for fresh and 3

minutes for frozen (setpoint<-12°C) to avoid water projection and heat diffusion in the box. The display of the RAT on the cab command is done 1 minute after this delay.

Abnormal termination: - If the defrost session lasts more than 30 minutes, it will be

stopped and the ‘defrost failure’ alert (A155/ A255) is issued. It will be possible to request a manual defrost.

- Heat mode is not allowed - The alert is cleared at next defrost session start.

Microprocessor Operation DEFROST Defrost logic Manual defrost



Automatic Defrost starting:

To select the “automatic defrost”, the defrost configuration parameter has to be set to “auto” (adjustable for each compartment).

At unit start or if configuration changed to “auto”, the first automatic defrost will occur after 30 minutes cumulated of COOL mode.

The delay between 2 defrost sessions is determined based on the energy consumed during the previous defrost session. This time delay is expressed in time of COOL mode only.

On Multi-temp units, defrost is independent on each compartment and request can occur at the same time.

If defrost request occurs at the same time, the priority is given to the compartment with the highest set point, the maximum power allowed will be given to this compartment. However, the other compartment gets the rest of the available power (heat or cool mode, not defrost

At the end of the first compartment defrost, the 2 compartments run in cool or heat mode during 20 minutes. Then, the second compartment starts in defrost.

). Restart of cool mode is not allowed during the defrost of the other compartment.

Microprocessor Operation DEFROST Defrost logic Automatic defrost



Defrost Termination:

Normal completion - The defrost session is completed when DTT reaches 12°C. - The EFM restarts after a delay of 1 minute for fresh and 3 minutes for frozen (setpoint<-12°C) to avoid water

projection and heat diffusion in the box. The display of the RAT on the cab command is done 1 minute after this delay.

Abnormal termination - If the defrost session lasts more than 30 minutes, it will be stopped and the ‘defrost failure’ alert (A155/ A255)

is issued. It will be possible to request a manual defrost. - During these alerts, manual defrost is allowed if conditions are met. - Heat mode is not allowed - The alert is cleared at next defrost session start. - The next defrost session is planned 30 minutes later.

Microprocessor Operation DEFROST Defrost logic Automatic defrost



Scheduled Defrost starting:

The delay between two defrost sessions is configured from the cab command or from the service tool. It can take values from 0.5 to 3 hours with 0.5 hour step (cool mode time).

On Multi-temp units, defrost is independent on each compartment and can occur at the same time.

If defrost request occurs at the same time, the priority is given to the compartment with the highest set point. The maximum power allowed will be given to this compartment.

However, the other compartment gets the rest of the available power (heat or cool mode, not defrost

At the end of the first compartment defrost, the 2 compartments run in cool or heat mode during 20 minutes. Then, the second compartment starts in defrost.

). Restart of cool mode is not allowed during the defrost of the other compartment

Defrost Termination:

Normal completion - The defrost session is completed when DTT reaches

12°C. - The EFM restarts after a delay of 1 minute for fresh and 3

minutes for frozen (set point<-12°C) to avoid water projection and heat diffusion in the box. The display of the RAT on the cab command is done 1 minute after this delay.

Abnormal termination: - If the defrost session lasts more than 30 minutes, it will be

stopped and the ‘defrost failure’ alert (A155/ A255) is issued. It will be possible to request a manual defrost.

- During these alerts, manual defrost is allowed if conditions are met.

- Heat mode is not allowed - The alert is cleared at next defrost session start.

Microprocessor Operation DEFROST Defrost logic Scheduled defrost



Stopping Sequence: - Stop Heater - If the compressor was stopped for more than 10 minutes, next COOL mode will start using “liquid slugging starting

sequence”.

Microprocessor Operation Defrost logic Stopping sequence



ACTIVE malfunctions – AXXX: An alarm is active when a problem occurs on the unit. Up to 10 actives alarm can be stored but not memorized in case of battery voltage loss.

- The red LED is FLASHING: the unit is running in degrading mode.

• With Alarm code on the display alternatively with box T°(Alarm displayed 2s, box temperature 8s)

• Without Alarm code, availability in the alarm menu. - The red LED is STEADY ON: the unit is not running. Alarm code will be displayed alternatively with the box

temperature (alarm displayed 8s, box temperature 2s).

PASSIVE malfunctions – PXXX: An active alarm becomes passive when the problem disappears. Up to 15 alarms can be stored and kept in case of battery voltage loss.

- The red LED is not active. - The passive alarms stay in memory until the technician clears them.

ALARM RESET: only passive alarms can be reset by pressing simultaneously and keys on the cab command while passive alarm is displayed or thanks to a click on “Reset alarm” button on service tool.

INFORMATION only : AXXX is displayed alternatively with the box temperature without red LED (alarm displayed 2s every 8s)

ALARM family - A0XX : components of the condenser alarms - A1XX : Evaporator 1 components alarms ; A2XX : Evaporator 2 components alarms - A5XX : generator alarms - A6XX : inverter alarms

Microprocessor Data & security Alarm types



ALARM CODE DESCRIPTION Trigger ON condition Trigger OFF

condition Cab Display Control operation

A000 No malfunction – Unit is operational.

A001 Compressor Suction Pressure transducer failure

CSP out of range for 1 sec after at least 30 sec of compressor running

(< -1 or > 13.8 bar)

On/Off Reset If Cool demand: A001, LED steady

Otherwise A001, LED flashing

Do not allow Cool mode

A002 Compressor Discharge Pressure transducer failure CDP out of range for 1 sec (<0 or > 35 bar)

Automatic reset when CDP is within the correct range for 5 sec.

If Cool demand: A002, LED steady



A003 Compressor Discharge Temperature transducer failure CDT out of range for 1 sec (< -40°C or > +135°C) (<-40°F or > +275°F)

Automatic reset when CDT is within the correct range for 5 sec.




A004 Air Ambient Temperature thermistor failure AAT out of range for 5 sec.

Automatic reset when AAT is within the correct range for 5 sec.

A004 alternately with RAT, LED OFF.

Information only

A005 / A009 Not used

A010 Pressure Equalization Valve Harness failure

Open circuit detection for 1 sec

Automatic when failure condition disappears for 10 sec.



Cool mode allowed. If restarted compressor limited at 30Hz for 15 min.


A015 Pressure Equalization Valve solenoid failure

Over current Automatic when failure condition disappears for 20 sec.

Becomes manual reset if more than 3 occurrences within a 1 hour period



Switch OFF and disable PEV Cool mode allowed. If restarted compressor limited at 30Hz for 15 min.

A016 Cab command cable failure Over current Automatic when failure

condition disappears for 10 sec.

N.A. Switch OFF cab display

Microprocessor Data & security Alarms list Condenser





A017 Wake up signal failure

Micro intends to wake-up the inverter but no signal read back from inverter for 1 sec


N.A. Stop all operations

A018 Microprocessor temperature failure Micro Temperature > 85°C for 30 sec. Automatic when micro

temperature < 65°C for 10 sec

A018 alternately with RAT,

LED steady

Force NULL mode without EFM (except for post ventilation)

A019 Inverter / Compressor failure Compressor requested to OFF and its consumption is not NULL for 30 sec.

Manual reset A019, LED steady Stop all operations

A020 Inverter communication failure Inverter does not respond for 5 sec. Automatic when failure


A020, LED steady Force all compartments to active mode to display alarms

A021 Cab command communication failure No status received from cab display for 5 sec.


N.A. Information only , unit still running (but impossible to display it)

A025 Logic board power relay failure Power relay is energized, power voltage supply voltage is present BUT power output is not detected

Manual reset A025, LED steady Stop all operations


A030 Battery voltage failure

Bad battery voltage detected on the micro for 30 sec.

12V unit: UBatt < 10.5V or >16V

24V unit: Ubatt < 21V or >32V

On/Off Reset If road mode: A030, LED steady


Stop all operations, Switch OFF Battery relay

Switch to sleep mode after 1 min.

A031 Auxiliary DC voltage failure

Bad auxiliary DC voltage detected for 30 sec.

12V unit: UDCaux < 10V or Ubatt > 16.0V

24V unit : UDCaux < 20V or Ubatt >32V

On/Off Reset If Standby mode : A031, LED steady


Standby mode not allowed. Stop all operations.

Switch OFF standby relay




ALARM CODE DESCRIPTION Trigger ON condition

Trigger OFF condition

Cab Display Control operation


A035 Dual supply failure

Ignition key signal and AC Main presence detected simultaneously for 1 sec.


A035, LED steady

Force all compartments to active mode to display alarms


A040 Runtimes not valid Hour meters not filled in

Standby, Road, Compressor Hour meters

Automatic when failure condition disappears

A040, LED steady


A041

Configuration mismatch: • No Evaporator selected on compartment 1 • Bulkhead fan selected for compartment 2 • MCS600, MPS600 or MPV850 evaporator type in a mono-temp application (or

a bi-temp application with Bulkhead Fan). 3

• Mono-temp with high size condenser and MCL850 or MCV850 evaporator 4 • High size condenser with two MCS600 or MCS600S evaporators 5 • MCL1100 or MCL1100S evaporator on compartment #2 6 • Two MCL1100 or MCL1100S evaporators in a bi-temp application 7 • 12V Inverter with 24V configured on Logic Board OR 24V Inverter with 12V

configured on Logic Board. 11

• Heater mismatch 12 • Inverter software version incompatible with Logic Board software version 13

Wrong configuration Automatic when failure condition disappears

A041, LED steady


A042 Wrong cab command display

Monotemp temp Cab display version < 190 or Monotemp cab display on a multitemp unit.

Automatic when failure condition disappears

A042, LED steady


A043 Logic board: Eprom failure A043, LED steady

Automatic when failure condition disappears.




ALARM CODE DESCRIPTION Trigger ON condition Trigger OFF condition Cab Display Control operation

A049 Not used

A050 Compressor failure

Cool mode started for 30sec, and CDP-CSP < 1bar

Automatic when failure condition disappears for 30 sec

Becomes manual reset if more than 5 occurrences within a 2 hours periods




A051 Compressor Discharge Temperature failure

CDT> CDT shutdown value

(CDT shutdown value= 106,5°C or 115°C regarding operation conditions)


Becomes On/Off reset if more than 5 occurrences within a 2 hours periods




A052 Compressor Discharge Pressure failure

CDP> CDP shutdown value (See compressor envelope for CDP shutdown value)






A053 Compressor Suction Pressure failure

CSP < CSP shutdown value (0.06b / 0.87 PSI)






A054 Low Compressor Suction Pressure failure

CSP < CSP Recovery shutdown value

(-0.4b / -5.8 PSI)











A055 High Compressor Suction Pressure failure

CSP> CSP high Shutdown value and compressor running for at least 5 minutes. (6.2b / 90 PSI)






A056 Low Compressor Discharge Pressure failure

CDP< CDP low shutdown value and compressor running for at least 5 minutes. (See compressor envelope for CDP low shutdown value )


Becomes OFF reset if more than 5 occurrences within a 2 hours periods





A060 Pressure equalization failure

Compressor stopped and PEV opened for 20s and CDP-CSP > 2 bars

Automatic when CDP and CSP pressures are balanced ( 1 bar delta P for 10 seconds).





A061 Compressor low consumption

If PEV closed and not in starting sequence, Current consumption too low according to the frequency

On/Off reset If Cool demand: A061, LED steady



A062 Not used

A063 Lack of compressor power Compressor stopped due to lack of power (Single phase 16 A network)

Automatic after 30 sec. If Cool demand: A063, LED steady









A070 Compressor failure Short circuit detection

Over current phase to phase or phase to ground




A071 Compressor failure Overload detection

Frequency under 30Hz for at least 10 sec

Automatic




A072 Compressor : I2t protection Startup peak of current protection





A080 Condenser Fan Motor failure

Short circuit detection Automatic when failure condition disappears.

Becomes OFF reset if more than 10 occurrences within a 1 hour period.

If not unit failed, A080 alternately with RAT, LED flashing.

Otherwise, A080 alternately with RAT, LED steady.

Stop CFM, continue current operation if Inverter box T° < 90°C

Otherwise, stop all operations.

A081 Condenser Fan Motor failure

Overload detection due to locked rotor

On/Off reset If not unit failed, A081 alternately with RAT, LED flashing.

Otherwise, A081 alternately with RAT, LED steady.

Stop CFM, continue current operation if Inverter box T° < 90°C

Otherwise, stop all operations.

A082 Condenser Fan Motor open load Open circuit detection On/Off reset A082 alternately with RAT, LED steady.

Stop all operations


A090 General maintenance message Road + Standby hours >1000Hrs (without NULL mode)

Reset from Service tool SEr alternately with RAT, LED OFF Information only

A091 Compressor maintenance message The compressor runs out of his envelope for 500Hrs

Reset from Service tool SErC alternately with RAT, LED OFF Information only






A100 / A200 Return Air Temperature failure Out of the range Automatic reset when

RAT is within the correct range for 5 sec.

A100 / A200 alternately with DTT 1/2, LED flashing.

Use DTT sensor if valid

A101 / A201 Defrost Termination Thermostat failure Out of the range Automatic reset when

DTT is within the correct range for 5 sec.

If Defrost or heat mode, A101/A201 alternately with RAT 1/2, LED steady

Otherwise A101/A201, LED flashing

Do not allow Cpt# to defrost and heat mode

A102 / A109 A202 / A209 Not used

A110 / A210 Liquid Valve harness failure Open circuit detection Automatic when failure


If Cool mode, A110/A210, LED steady.


Do not allow Cpt# Cool mode

A111 / A211 Drain Water Resistor harness failure Open circuit detection Automatic when failure


A111 / A211 alternately with RAT1/2, LED OFF.

Information only

A112 / A212 Evaporator Fan Motor open load Open circuit detection Automatic when failure


A112/A212, LED steady.

Force Cpt# to NULL mode without fan


A115 / A215 Liquid Valve Solenoid failure



If Cool mode, A115/A215, LED steady.


Switch OFF LSV, Do not allow Cpt# Cool mode.

A116 / A216 Drain Water Resistor failure


Becomes On/Off reset if more than 3 occurrences within a 1 hour period

LED flashing Switch off and disable DWR#

Microprocessor Data & security Alarms list Compartment 1 & 2





A117 / A217 Evaporator Fan Motor failure


Becomes On/Off reset if more than 3 occurrences within a 1 hour period

If another fan is available and Cool mode, A117/A217 LED flashing.

Otherwise A117/A217, LED steady.

Switch OFF and disable failed fan. Allow Cool mode if another fan available, if not force Cpt# to NULL mode without fan

A119 / A139 A219 / A239 Not used

A140 / A240 Set Point setting mismatch Set point out of the range Automatic when failure


A140 / A240 alternately with RAT1/2, LED OFF.

Information only

A141 / A149 A241 / A249 Not used

A150 / A250 Box temperature out of range (high) If Dead band reached once and RAT > set point + USL+ 5 °C

Automatic after 5 sec. when failure condition disappears

HIT° alternately with RAT1/2, LED OFF.

Information only

A151 / A251 Box temperature out of range (low)

If Dead band reached once, Set point > -12°C and RAT < set point + USL- 5 °C


LOT° alternately with RAT1/2, LED OFF.

Information only

A152 / A154 A252 / A254 Not used

A155 / A255 Defrost too long

Defrost duration > 30 mn Automatic at next defrost session activation

LED flashing Stop current defrost session.

In automatic defrost mode, new defrost session scheduled after 30 min.






A156 / A256 Compartment overheating

DTT or RAT > 55°C, Unit off A156/A256 alternately with RAT1/2, LED steady.

Stop all operations.

Force EFM to maximum speed.

Unit ‘switch OFF’ not allowed in stby mode.

A157 / A164 A257 / A264 Not used

A165 / A265 Evaporator Fan Motor failure

No speed or wrong RPM signal

(50% difference between command and returned signal)

Alarm Inhibited for 30sec. after each speed change.

On/Off reset If another fan available and Cool mode: A165/A265, LED flashing.

Otherwise A165/A265, LED steady

Switch OFF and disable failed fan.

If another fan available, Allow Cool mode, otherwise force Cpt# to NULL mode without fan.

A166 / A169 A266 / A269 Not used

A170 / A270 Heater protection (klixon) Over temperature ( >45°C) On/Off reset A170/A270, LED steady. Stop heat or defrost.

A171 / A271 Heater failure Short circuit detection


Manual reset A171/A271, LED steady. Stop all operations

A172 / A272 Heater failure Low resistor Manual reset A172/A272, LED steady. Stop heat or defrost.

A173 / A273 Heater failure High resistor or open circuit Manual reset A173/A273, LED steady. Stop heat or defrost.

A174 / A199 A274 / A299 Not used






A500 Generator short circuit Short circuit detection


Manual reset If road mode, A500 LED steady.

Otherwise A500, LED Flashing.

Stop road mode operation

A501 Generator over current failure Over current Automatic

Inverter shall be reset at power source change

If road mode, A501 LED steady.



A502 Generator over current failure Over current due to phase lost




A503 Generator over current failure Short circuit detection

Over current phase to ground




A505 Generator encoder fault On/Off reset if more than

15 occurrences within 1 hour period.




A506 Generator over speed

Generator speed>12000 rpm

Generator speed<9000 rpm during more than 15 seconds

If generator speed>9000rpm during more than 5 minutes:

-“rPM-“ in alternance with ”3000” for single temp

-“rPM-“ and “3000” for multi-temp



A510 Generator temperature safety Generator over temperature





A511 Generator encoder over temperature Encoder over heating Automatic after 10 sec.

when failure condition disappears





Microprocessor Data & security Alarms list Generator





A520 Generator sensor fault Generator thermal sensor fault




A521 Encoder sensor fault Encoder temperature sensor fault




A530 Generator low speed

Compressor requested to start AND compressor not started AND generator speed<2200

Automatic If road mode, “rpm” Stop cooling operation


Microprocessor Data & security Alarms list Generator





A600 Inverter reset Unexpected Inverter reset On/Off reset A600, LED steady. Stop all operations

A601 Inverter not ready Generator overspeed Automatic Nothing, displayed only on service tool

Stop all operations

A604 Compressor drive under power Drive ON, power continuously less than 100W for at least 10 sec.

On/Off reset If Cool mode, A604, LED steady.


Do not allow cool mode

A606 Inverter IGBT module over temperature Temperature > 100°C for at least 30 sec.


If Cool mode, A606, LED steady.



A607 Inverter: internal fault Inverter: internal fault On/Off reset If Cool mode, A607, LED steady.




A621 Inverter IGBT module temperature Inverter IGBT module over temperature






A624 Inverter, generator or generator harness fault Inverter voltage regulation Automatic





A625 Not used

A626 Bulk over voltage road mode Bulk over voltage On/Off reset if more than

15 occurrences within an 1 hour period.




A627 Not used

Microprocessor Data & security Alarms list Inverter





A628 Inverter: internal fault Inverter: internal fault On/Off reset if more than

15 occurrences within 1 hour.

A628, LED steady. Stop all operations

A629 Bulk under voltage road mode Bulk under voltage OFF reset if more than



Otherwise A629, LED flashing Stop road mode operation

A630 Inverter: internal fault Inverter: internal fault Manual reset If Cool mode, A630, LED steady.



A631 Inverter unbalanced current (road mode) Inverter: internal fault Manual reset Display A631, LED steady Stop all operations, do

not allow inverter initialization

A635 Not used

A636 Bulk over voltage standby mode Bulk over voltage On/Off reset if more than




Stop stby mode operation

A637 Bulk under voltage standby mode Bulk under voltage On/Off reset if more than





A638 Inverter DC Aux failure Inverter DC Aux over load On/Off reset if more than





A639 Inverter DC Aux failure Inverter DC Aux short circuit

Manual reset If Cool mode, A639, LED steady.



A640 Inverter: internal fault Inverter: internal fault Automatic





A641 Inverter DC AUX failure Inverter DC AUX over voltage

On/Off reset if more than 15 occurrences within 1 hour.









A642 Inverter DC AUX failure

Inverter DC AUX under voltage

On/Off reset if more than 15 occurrences within 1 hour.




A643 Inverter DC AUX failure Inverter DC AUX short circuit

Manual reset If Cool mode, A643, LED steady.



A644 Not used

A645 Inverter: internal fault Inverter: internal fault Automatic



A646 Not used

A647 Battery mismatch between 12 & 24 Vdc Mismatch between 12 & 24 Vdc

Manual reset A647, LED steady. Stop all operations

A648 Inverter failure Inverter over temperature Automatic



A649 Not used

A650 Battery voltage failure Battery under voltage Automatic



A651 Inverter: internal fault Inverter: internal fault Manual reset A651, LED steady. Stop all operations

A652 Standby supply fault 1 phase loss Automatic


If Stby mode, A652, LED steady.



A653 Inverter power management issue Inverter power management

Automatic








A654 Inverter internal failure Inverter internal fault Automatic after 10 sec.

when failure condition disappears


A655/A670 Not used

A671 Inverter: internal fault Inverter: internal fault Manual reset A671, LED steady. Stop heat or defrost mode

A672 Inverter: internal fault Inverter: internal fault Manual reset A672, LED steady. Stop heat or defrost mode




Nb Mode Description Action

0x000 Off No override No action 0x100 Active No override No action 0x110 Active CDSP stopped Monitoring only 0x111 Active CDSP init step 1 Monitoring only 0x112 Active CDSP init step 2 Monitoring only 0x113 Active CDSP init step 3 Monitoring only 0x114 Active CDSP init step 4 Monitoring only 0x115 Active CDSP source select Monitoring only 0x116 Active CDSP battery checking Monitoring only 0x117 Active CDSP setting VRDSP Monitoring only 0x118 Active CSDP starting VRDSP Monitoring only 0x119 Active CDSP init completed Monitoring only 0x120 Active VRDSP not configured Monitoring only 0x121 Active VRDSP Road stopped Monitoring only 0x122 Active VRDSP Road soft start Monitoring only 0x123 Active VRDSP Road running Monitoring only 0x131 Active VRDSP Standby stopped Monitoring only 0x132 Active VRDSP Standby soft start Monitoring only 0x133 Active VRDSP Standby running Monitoring only 0x200 Null No override Normal Null Mode 0x201 Null Box Over-heating EFM at maximum speed 0x202 Null Post ventilation EFM at minimum speed for 30 seconds after heat Mode existing

0x203 Null Equalization Re-open PEV for one minute while “Equalization failure” alarm is active

0x204 Null Door opened EFM stopped 0x205 Null Air sampling EFM forced to minimum speed for 1mn every 10 mn

Microprocessor Data & security Overrides list



Nb Mode Description Action 0x206 Null Post Defrost EFM restart delayed for 40 seconds after Defrost 0x207 Null Defrost in another compartment Stay in Null Mode while other compartments are defrosting 0x208 Null Forced Null Mode Stay in Null Mode until Null Mode delay is elapsed

0x210 Null Bulkhead Fan: high RAT in other Compartment Stay in Null Mode until Cpt#1 conditions are correct

0x300 Cooling No override Normal Cool Mode 0x301 Cooling Compressor pre-heating Compressor pre-heating (DC injection) 0x302 Cooling Short Starting sequence Compressor is starting 0x303 Cooling Normal Starting sequence Compressor is starting 0x304 Cooling Liquid Slugging Starting Compressor is starting 0x305 Cooling Long Starting sequence Compressor is starting

0x306 Cooling Limited ramp-up/speed Compressor ramp-up speed is limited to 0.2 Hz/s and speed is limited to 60 Hz during starting sequence

0x307 Cooling 40-70 Hz envelop limits Compressor frequency limitation 40-70 Hz

0x308 Cooling 40-70 Hz envelop limits & Low power/Low speed Compressor frequency limitation 40-70 Hz

0x309 Cooling 30-60 Hz envelop limits Compressor frequency limitation 30-60 Hz 0x30A Cooling CDT active in pull-down Compressor controlled by CDT PI controller 0x30B Cooling CDP active in pull-down Compressor controlled by CDP PI controller 0x30C Cooling Low temp in other Cpt Compressor frequency limited to 40 Hz 0x30D Cooling Door management Stop compartment cooling, switch to Null Mode 0x30E Cooling Compressor min on-time Continue to run compressor 0x30F Cooling Not prioritary Monitory only 0x310 Cooling Post-defrost EFM re-starting delayed for 40 seconds 0x312 Cooling Stopping sequence Cool Mode is stopping

0x313 Cooling Defrost in another compartment Compressor is ran at reduced speed to allow other compartment to defrost

0x322 Cooling Short Starting sequence with PEV failure Compressor is starting




Nb Mode Description Action

0x313 Cooling Defrost in another compartment Compressor is ran at reduced speed to allow other compartment to defrost

0x322 Cooling Short Starting sequence with PEV failure Compressor is starting 0x323 Cooling Normal starting sequence with PEV failure Compressor is starting 0x324 Cooling Liquid Slugging Starting with PEV failure Compressor is starting 0x325 Cooling Long Starting sequence with PEV failure Compressor is starting 0x400 Defrost No override Normal defrost 0x401 Defrost End of defrost Reduced heating power (DTT > 3°C) 0x402 Defrost Natural defrost No heating, no fan (future feature) 0x403 Defrost Defrost not prioritary Defrost is running on another compartment 0x404 Defrost Door opened Normal defrost (no change, monitoring only) 0x500 Heating No override Normal heating 0x501 Heating Door opened Stop heating capacity, switch to Null Mode

0x502 Heating Transparent Defrost EFM speed reduced to 25% and full heating power until DDT reaches 2°C threshold

0x503 Heating Heater power sharing Heating power is shared in order to have a maximum heating power sum of 3000W

0x504 Heating Heater reduced power Heating power is reduced to allow other compartment to defrost


Override display on cab command pressing “minus key”



Software version

Unit Serial Number or application date Evolution Version of the Pulsor

tool necessary

0.850 FT restart 2010 - Alarm A631 for inverter detection - Defrost and cool simultaneously in MT - Defrost and heat simultaneously in MT

2.0.0.5

0.860 October 2010

- Spal evaporators - Mismatch detection between all evaporator - Add alarms A530 (generator low speed) & A025 (logic board relay failure) - In case of micro relay failure, A025 “logic board relay failure” appears. The

micro has to be replaced

2.0.0.9

0.870 December 2010 - Spal evaporator with mismatch detection between all evaporators 2.0.0.9

0.880 January 2011

- Reduce post-ventilation (heat stop) to 30 seconds instead of 1 minute to reduce stopping duration

- Allow 3 CFM starts after a rotor locked alarm (A081) before switching off-reset kind

- Heater drive check procedure is improved (when heaters are energized)

2.0.0.9

Microprocessor Software evolution



Software version

Unit Serial Number or application date Evolution Version of the Pulsor

tool necessary

0.890 July 2011

- “Heater mismatch” detection robustness improvement (delay of 1 mn before test, 1 test per compartment start, out of range value rejected)

- For SPAL evaporators fans, open load test every 10 minutes

2.0.0.9

0.900 October 2011

- Updated alarm codes displayed for alarms 18, 19, 41, 50, 51, 52, 53, 54, 55, 56, 60, 63, 80, 81, 115/215, 116/216, 117/217, 508, 506, 510, 511, 624, 628, 637, 650 and 652. The alarm code is hidden to the driver until alarms becomes manual-reset or off-reset.

- Changed reset kind for alarms 18, 71, 506, 520, 521, 624, 630 and 645. - Alarm A041 sub-codes updated. - Default values for 0x170/0x270 parameters “Evaporator type” is now 2

(MPL850).

2.0.0.9

Microprocessor Software evolution

microprocessor - transcold the “set” key to validate the new selected value or to go to the next...

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