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Parameter and Error list
Zanotti GM-Uniblock
Zanotti GS-Split
GM GS
ESIE 17-02
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SUBJECT: Parameter and Error list Zanotti GM-Uniblock & GS-Split
Attached, please find the Zanotti GM-Uniblock & GS-Split Parameter and Error list. This document
explains how to work with the units controller, gives an overview of all the parameter settings and
gives an thoroughly explanation about the error codes.
Before performing design, construction, or maintenance, thoroughly read the "Installation Manual" that
come with this product.
1. Table of contents
1. Table of contents ........................................................................................................... 2
2. Version log ..................................................................................................................... 2
1. PCB: Technical data ...................................................................................................... 3
2. Keyboard Technical Data ............................................................................................... 4
3. How to program the parameters ..................................................................................... 6
4. Entering ‘Machine Status’ Menu ..................................................................................... 8
5. Alarm signalling.............................................................................................................. 9
5.1 MAX/MIN Temperature alarms.............................................................................. 11
5.2 Duty-Cycle ............................................................................................................ 11
6. Parameters .................................................................................................................. 12
2. Version log
Month/Year Revised contents
09/2017 -
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1. PCB: Technical data Casing: Open board
Dimensions: 160x117 mm (Lxh)
Mounting: Can be adapted to container sizes that comply with DIN specifications (installed on DIN rail)
Terminals: Screw type for 2.5mm² section cables and faston
Temperature: Operating: –5…55 °C - storage: –30…85 °C
Ambient humidity: Operating / storage: 10…90 % RH (non-condensing)
Power supply: SMPS 100-240 V~ ±10% 50/60 Hz
Power consumption: 7.5W max
Range: –50...110°C
Accuracy: Better than 0.5% full scale + 1 digit
Resolution: 1 or 0.1 °C
Buzzer: NO
Analogue inputs: 3 NTC inputs (Pb1, Pb2* and Pb3*)
*NOTE: probe Pb2 is present if H42 = y and probe Pb3 is present if H43 ≠ n
Digital inputs: 3 voltage-free digital inputs (clean) configurable via parameters H11, H12 and H13
Serial Outputs: TTL (5-way connector): for connection to Copy Card or Supervisor (connection to Televis).
• 'Voltage' serial (terminals 1-2-3) for power module-keyboard connection (long distance)
• 'RS485' serial (terminals 19 ... 24) for Supervision (connection to Televis).
Digital outputs: The device has 5 relay outputs:
Output RL1 = Relay 12(12)A (2Hp) 250V~ SPST (Compressor)
Output RL2 = Relay 8(4)A 250V~ SPST (Fans)
Output RL3 = Relay 16A 250V~ SPDT (Defrost)
Output RL4 = Relay 16A 250V~ SPST (Light)
Output RL5 = Relay 8(4)A 250V~ SPST (Alarm)
The device is classified:
In terms of construction, as an independently mounted automatic electronic control device.
In terms of automatic operating characteristics, as a type 1B controller.
In terms of software class and structure, as a Class A controller.
As a device with class 2 pollution rating (standard).
As a device with class D fire resistance.
In terms of the over voltage category, as a grade II device.
As a device made with class IIIa material.
Terminals
1/2/3 ‘Voltage’ serial (power module-keyboard connection)
RL1 Compressor relay output
4 - 5 Digital input D.I.1 (general pressure switch) RL2 Fans relay output
6 - 7 Digital input D.I.2 (external alarm) RL3 Defrost relay output
8 - 9 Digital input D.I.3 (door switch) RL4 Lights relay output
12 - 13 Probe Pb1 input (cold room) RL5 Alarm relay output
14 - 15 Probe Pb2 input (evaporator) L - N 230Va board power supply
16 - 17 Probe Pb3 input (condenser alarm) GND Ground
TTL TTL / Copy Card input from 19 to 24 RS485 for Supervision (connection to Televis)
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2. Keyboard Technical Data
For split For Mono-blocks
Casing: Open board with polyester front cover
Dimensions: Front panel 66x130 mm, panel thickness
0.5 mm
Front panel 83x310 mm, panel
thickness 0.5 mm
Mounting: Panel-mounting (via double-sided adhesive) can be set for a distance of up to 100
m
Terminals: Screw terminals for cables with a cross-section of 2.5mm2
Temperature: Operating: –5…55 °C - storage: –30…85 °C
Ambient humidity: Operating/storage: 10…90 % RH (non-condensing)
Power supply: 12Vc ±10% from power board (IWP750 Zanotti series)
Display range: –50...110°C
Accuracy: Better than 0.5% integral scale + 1 digit
Resolution: 1 or 0.1 °C
Buzzer: No
Display: Display with 4 white colour digits
Icons: 14 Colour icons (7 red - 3 yellow - 4 green)
Keys: Colour icons (7 red - 3 yellow – 4 green) 5 Capacitive touch keys + 2 touch
knob
The device is classified: The classification of the instrument is: • According to its construction, as an independently mounted automatic
electronic control device. • In terms of automatic operating characteristics, as a type 1B controller. • in terms of software class and structure, as a Class A controller. • As a device with class 2 pollution rating (standard). • As a device with class D fire resistance. • According to the overvoltage category, as a class II device. • As a device made with class IIIa material.
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3. How to program the parameters Level 1 parameters:
1. Touch PRG key for 5 seconds. It will display the label CP (compressor) indicating that you have access to the programming menu.
2. Act on the wheel to display the desired folder.
3. Touch the PRG key to access the parameters of the selected folder.
4. Act on the wheel to select the parameter you want to modify.
5. Touch the PRG key to display the parameter value.
6. act on the wheel to change it.
7. Touch the PRG key to store the value and return to display the parameter label.
8. To return to the folder briefly touch the ON / OFF key. Level 2 parameters:
1. Touch PRG key for 5 seconds.
2. Act on the wheel and scroll to the CnF-folder.
3. Touch the PRG key to access the folder.
4. Act on the wheel and scroll to the PA2-label.
5. Touch the PRG key to access the folder.
6. Give in the password “100” by using the scroll wheel.
7. Touch the PRG key.
8. Scroll through the level 2 parameters.
9. Touch the PRG key to access a folder.
Level 2 parameters should not be changed, they are unit related and critical for the unit operation.
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4. Entering ‘Machine Status’ Menu
Press and release the PRG key to open the ‘Machine Status’ menu. The following parameters will
appear: • ALr: alarms folder (if present; probe errors/faults excluded) • SP: setpoint configuration folder • Pb1: probe 1 value folder • Pb2: probe 2 value folder (if present; H42 = y) • Pb3: probe 3 value folder (if present; H43 ≠ n)
FnC: Functions folder. The functions are :
Function Function label ACTIVE Function label NOT
ACTIVE
Alarm signalling
Manual defrost dEF + blinking icon dEF Blinking Defrost icon
Alarm acknowledgement tAL tAL Blinking Alarm icon
Reset pressure switch alarms rAP rAP Alarm ON icon
NOTES:
• To change the status of a given function, press the ‘SET’ or ‘PRG’ key
• If the instrument is switched off, the function labels will return to the default status.
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5. Alarm signalling
Label Description Cause Effects Remedy
E1 Probe Pb1 error
(cold room)
• Measured values are outside operating range.
• Probe faulty/short-circuited/open.
• Label E1 displayed. • Alarm icon
permanently on. • Max and min alarm
regulator disabled. • Compressor function
based on parameters Ont and Oft.
• Check the probe type (NTC).
• Check the probe wiring.
• Replace probe.
E2 Probe Pb2 error
(defrost)
• Measured values are outside. operating range.
• Probe faulty/short-circuited/open.
• Label E2 displayed. • Alarm icon
permanently on. • The defrost cycle will
end due to Time out (dEt).
• Check the probe type (NTC).
• Check the probe wiring.
• Replace probe.
E3 Probe Pb3 error
(condenser)
• Measured values are outside operating range.
• Probe faulty/short-circuited/open.
• Label E3 displayed. • Alarm icon
permanently on.
• Check the probe type (NTC).
• Check the probe wiring.
• Replace probe.
AH1 Pb1 HIGH
temperature alarm
Value read by Pb1 > HAL after time of tAO. (see ‘MAX/MIN TEMPERATURE ALARMS’).
• Label AH1 recorded in folder ALr.
• No effect on regulation.
Wait until value read by
the probe Pb1 returns
below HAL−AFd.
AL1 Pb1 LOW
temperature alarm
Value read by Pb1 < LAL after time of tAO. (see ‘MAX/MIN TEMPERATURE ALARMS’).
• Label AL1 recorded in folder ALr.
• No effect on regulation.
Wait until value read by
the probe Pb1 returns
above LAL+AFd.
AH3 Pb3 HIGH
temperature alarm
Value read by Pb3 > SA3 after time of tAO (if dA3 < 0). (see ‘MAX/MIN TEMPERATURE ALARMS’).
• Label AH3 recorded in folder ALr.
• No effect on regulation.
Wait until value read by
the probe Pb3 returns
below SA3−dA3.
AL3 Pb3 LOW
temperature alarm
Value read by Pb3 > SA3 after time of tAO (se dA3 ≥ 0) (see ‘MAX/MIN TEMPERATURE ALARMS’).
• Label AL3 recorded in folder ALr.
• No effect on regulation.
Wait until value read by
the probe Pb3 returns
below SA3+dA3.
EA External Alarm
Activation of a digital input. (H1x = ±5)
• Label EA recorded in folder ALr
• Alarm icon permanently on.
• Regulation blocked.
Check and remove
external cause of alarm on
D.I.
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Label Description Cause Effects Remedy
OPd Door Open Alarm
Activation of a digital input for a time greater than tdO (H1x = ±4).
• Label Opd recorded in folder ALr.
• Alarm icon permanently on.
• Regulation blocked if dOd = y.
• Close the door. • Delay function
defined by OAO.
Ad2 End of Defrost for
time-out
End of defrost cycle due to
timeout rather than due to
defrost end temperature
being read by probe Pb2.
• Label Ad2 recorded in folder ALr if parameter dAt=1; not shown if dAt=0.
• Alarm icon permanently on.
Wait for the next defrost
cycle for automatic reset.
nPA General pressure
switch alarm
Activation of pressure
switch alarm by general
pressure switch.
If the number of pressure
switch activations is:
n < PEn
• Folder nPA recorded in folder ALr with the number of pressure switch activations.
• Regulation blocked .
Check and remove the
cause that triggered the
alarm on the digital input (Auto reset).
LPA Minimum pressure
switch alarm
Activation of pressure
switch alarm by low
pressure switch regulator.
If the number of pressure
switch activations is:
n < PEn • Folder LPA recorded
in folder ALr with the number of pressure switch activations.
• Regulation blocked.
Check and remove the
cause that triggered the
alarm on the digital input (Auto reset).
HPA Maximum pressure
switch alarm
Activation of pressure
switch alarm by high
pressure switch regulator.
If the number of pressure
switch activations is:
n < PEn • Folder HPA recorded
in folder ALr with the number of pressure switch activations.
• Regulation blocked .
Check and remove the
cause that triggered the
alarm on the digital input (Auto reset).
PA General pressure
switch alarm
Activation of pressure
switch alarm by general
pressure switch.
If the number of pressure
switch activations is:
n = PEn • Label PA displayed. • Label PA recorded in
folder ALr. • Alarm LED on. • Relay activated (if
configured). • Regulation blocked.
• Switch the device
off and back on again.
• Reset alarms by entering the FnC folder and selecting the rAP function (Manual Reset).
E7 No link between
power board and
keyboard
Communication fault between Power board and Keyboard
• Label E7 displayed. • No effect on
regulation.
During configuration,
switch off all devices then
switch them back on
again.
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5.1 MAX/MIN Temperature alarms
Temperature value in relation to setpoint
(Att=1)
Temperature value Absolute
(Att=0)
Minimum temperature alarm
Temp. ≤ Set + LAL* Temp. ≤ LAL (LAL with sign)
Maximum temperature alarm
Temp. ≥ Set + HAL** Temp. ≥ HAL (HAL with sign)
Returning from minimum temperature alarm
Temp. ≥ Set + LAL + AFd or ≥ Set + │LAL│ + AFd (LAL<0)
Temp. ≥ LAL + AFd
Returning from maximum temperature alarm
Temp. ≤ Set + HAL . AFd (HAL>0) Temp. ≤ HAL - AFd
*If LAL is negative, Set + LAL < Set **If HAL is negative, Set + HAL < Set
5.2 Duty-Cycle
A probe Pb1 (cold room) error causes the following actions:
Code E1 is shown on the display
The regulator is activated as indicated by parameters Ont and OFt if set for dutycycle.
Parameters Ont and OFt programmed for duty-cycle
Ont OFt Compressor output
0 0 OFF
0 >0 OFF
>0 0 ON
>0 >0 DUTY-CYCLE
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6. Parameters
Label Name Medium hot gas
Low hot gas
Medium electric
Low electric
Unit Range Level Description
CP Compressor parameters
diF Differential 2 2 2 2 °/1 0,1…30 1&2 Compressor relay activation differential: The compressor stops when reaching the Setpoint value (as indicated by the regulation probe) and restarts at a temperature value equal to the Setpoint plus the value of the differential. Note: diF ≠ 0.
HSE Max. temp. Allowed setpoint
10 -15 10 -15 °/1 LSE…302 1&2 Higher SEt. Maximum value that can be assigned to the Setpoint. Note: The two Setpoints are interdependent: HSE cannot be less than LSE and vice-versa.
LSE Min. temp. Allowed setpoint
-5 -25 -5 -25 °/1 -58,0…HSE 1&2 Lower SEt. Minimum value that can be assigned to the Setpoint. Note: The two Setpoints are interdependent: HSE cannot be less than LSE and vice-versa.
Ont ON time if faulty room sensor
10 10 10 10 min 0…250 1&2 Compressor start time in the event of faulty probe.
If Ont = 1 and OFt = 0, the compressor stays on permanently (ON),
If Ont > 0 and OFt > 0, it will run in duty cycle mode (See Duty Cycle diagram).
Oft OFF time if faulty room sensor
20 20 20 20 min 0…250 1&2 Compressor switch off time in the event of faulty probe.
If OFt = 1 and Ont = 0, the compressor will always stay off (OFF).
If Ont > 0 and OFt > 0, it will run in duty cycle mode (See Duty Cycle diagram).
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Label Name Medium hot gas
Low hot gas
Medium electric
Low electric
Unit Range Level Description
dOF Time between comp. OFF and
next start
2 2 2 2 min 0…250 1&2 Delay time after switch off: the delay time indicated must elapse between deactivation of the compressor relay and the next switch-on.
dbi Time between 2 compressor
starts
2 2 2 2 min 0…250 1&2 Delay time between switch-ons: the delay time indicated must elapse between two consecutive compressor switch-ons.
DEF Defrost Parameters
dtY Defrost operating mode: 1=gas
0=electric
1 1 0 0 num 0/1/2 1&2 Type of defrost.
0 = electric defrost - compressor OFF during defrost cycl
1 = cycle inversion defrost (hot gas) - compressor ON during defrost cycle
2 = ‘Free’: defrost independent of compressor
dit Time interval between 2 defrosts
3 3 3 3 hours 0…250 1&2 Interval between the start of two consecutive defrost cycles. 0 = function disabled (defrosting NEVER performed)
dt1 Unit of measure for defrost
interval
0 0 0 0 flag 0/1/2 2 Defrost time 1. Unit of measure for defrost interval (parameter dit).
0 = dit in hours. 1 = dit in minutes. 2 = dit in seconds.
dCt Defrost interval time count mode
0 0 0 0 Num 0/1/2/3 Selects the count mode for the defrost interval.
0 = compressor running hours (DIGIFROST® method); Defrost active ONLY when the compressor is on.
Note: compressor running hours are counted separately from the evaporator probe (count active also when evaporator probe missing or faulty).
1 = appliance running hours; the defrost count is always active when the machine is on and starts at each power-on
2 = compressor stop. Every time the compressor stops, a defrost cycle is performed based on parameter
3 = not used
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Label Name Medium hot gas
Low hot gas
Medium electric
Low electric
Unit Range Level Description
dEt Defrost time override
20 20 30 30 min 1…250 1&2 Defrost time-out; determines the maximum defrost duration.
dSt Defrost Termination Temperature
15 15 8 8 °/1 -50,0…150 1&2 Defrost end temperature (determined by the evaporator probe).
Fan Fans parameters
FSt Fans stop temperature
50 50 50 50 °/1 -50,0…150 1&2 Fans lockout temperature; if the value read by evaporator probe is greater than FSt, the fans will be stopped. The value is either positive or negative and, depending on parameter FPt, can be either the absolute temperature or the temperature relative to the setpoint.
Fdt Fans ON delay 3 3 3 3 min 0…250 1&2 Fans activation delay after a defrost cycle.
dt Drain Down Time 2 2 2 2 min 0…250 1&2 Drainage time. Dripping time.
dFd Fans OFF during defrost
Y Y Y Y flag n/y 1&2 Operating mode of evaporator fans during defrost. 0=n = no 1=y = yes.
FCO Fans ON during compressor OFF
n n n n flag n/y/dc 1&2 Fan Compressor OFF. Selects or deselects fan deactivation at compressor OFF.
0=n = fans off
1=y = fans on (with thermostat; depending on the value read by the defrosting probe, see FSt)
2=dc = duty cycle (via parameters ‘Fon’ and ‘FoF’)
Fod Fans OFF during door open
n n n n flag n/y 1&2 Allows fan block to be selected when the door is open and fan restart when the door is shut (if they were running). 0=n = fans blocked 1=y = fans unaltered.
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Label Name Medium hot gas
Low hot gas
Medium electric
Low electric
Unit Range Level Description
AL Alarms parameters
Afd Alarm differential 2 2 2 2 °/1 1,0…50,0 1&2 Alarms cut-in differential.
HAL High temperature alarm setpoint
5 5 5 5 °/1 LAL…150 1&2 Maximum temperature alarm. Temperature value (intended either as distance from Setpoint or as an absolute value based on Att) which, if exceeded in an upward direction, triggers the activation of the alarm signal. See ‘Max/Min temperature alarms.
LAL Low temperature alarm setpoint
-5 -5 -5 -5 °/1 -50,0…HAL 1&2 Minimum temperature alarm. Temperature value (intended as distance from the set point or as an absolute value based on Att) which, when exceeded downwards, triggers the activation of the alarm signal. See ‘Max/Min temperature alarms’.
PAO Alarm delay after start-up
3 6 3 6 hours 0…10 1&2 Alarm override time after device is switched on following a power failure. This parameter refers to high/low temperature alarms only.
dAo Alarm delay after defrost
60 60 60 60 min 0…999 1&2 Temperature alarm exclusion time after defrost.
OAO Alarm delay after door opening
1 1 1 1 hours 0…10 1&2 Alarm signal delay (low and high temperature) after the deactivation of the digital input (port closed).
SA3 High temperature alarm setpoint
55 55 55 55 °/1 -50,0…150 1&2 Alarm Setpoint for probe Pb3.
dA3 Differential 2 2 2 2 °/1 -30,0…30 1&2 Probe Pb3 alarm activation differential.
PrE Pressure alarms parameters
Pen Number of pressure trips
10 10 10 10 Num 0…15 1&2 Number of errors allowed per maximum/minimum pressure switch input. 0 = disabled.
PEI Time period for pressure trips
60 60 60 60 min 1…99 1&2 Minimum/maximum pressure switch error count interval.
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Label Name Medium hot gas
Low hot gas
Medium electric
Low electric
Unit Range Level Description
diS Display parameters
CA1 Calibration room sensor
0 0 0 0 °C -12,0…12,0 1&2 Calibration 1. Positive or negative temperature value added to the value read by Pb1. This sum is used both for the temperature displayed and for regulation.
dro Selection Celsius/Farenheit
0 0 0 0 flag 0/1 1&2 Selection of °C or °F to display the temperature read by the probe.
0 = °C 1 = °F.
NOTE: switching between °C and °F or vice versa DOES NOT modify the setpoint, differential, etc. (e.g. setpoint=10°C becomes 10°F).
ddL Display during the defrost
0 0 0 0 flag 0/1/2 1&2 Selects type of value to display.
0=normal read 1=read block 2=display deF
CnF Configuration parameters
PA2 password setting according
second level
x x x x flag 2
H41 Presence control probe
y y y y flag n/y 2 Presence of probe 1 (Pb1). n (0) = not present y (1) = present.
H42 Presence evaporator probe
y y y y flag n/y 2 Presence of probe 2 (Pb2). 0=n= not present 1= Y = present.