manualdehydrator100lenglisc mejor

Transmission Line Dehydrator 100 L/H

LLUE 110

Specification

Date 05.01

FM Gertebau Page 2 of 17 24.10.03

Contents Page

1 Specification........................................................................................................ 4

2 Short description ................................................................................................ 5

3 Design of the dehydrator .................................................................................... 5

4 Preparatory work and operation......................................................................... 5

5 Modes of operation ............................................................................................. 7

6 Description .......................................................................................................... 8

Summary ............................................................................................................. 8

Hour meter........................................................................................................... 8

Fault detection .................................................................................................... 8

Control panel....................................................................................................... 9

7 Menu functions ................................................................................................. 10

Basic functions ................................................................................................. 10

Parameters ........................................................................................................ 10

Serial interface .................................................................................................. 10

8 Accessories....................................................................................................... 12

Illustrations

Figure 1 Front view line ventilator LLUE 110............................................................... 3

Figure 2 Overview of LLUE 110 ( ETSI /19 ) ............................................................... 6

Figure 3 Overview of LLUE 110 2 HE ( 19, 2U ).......................................................... 7

Figure 4 Overview LLUE 110 7R ( 7R ) ......................................................................... 8

Figure 5 Power supply.................................................................................................. 9

Figure 6 Connector assignment................................................................................. 10

Figure 7 Air flow chart ................................................................................................ 11


Figure 8 Menu function .............................................................................................. 13

Figure 9 Block diagram 230 VAC ............................................................................... 16

Figure 10 Block diagram 60 VDC ................................................................................. 16

Figure 11 Mainboard layout ......................................................................................... 17

Figure 1 LLUE 110

Friedl & Mller Gertebau GmbH Karl-Benz-Str. 14 85221 Dachau Telephone +49-8131/313320 Fax 0 81 31 / 1 55 45 http://www.friedl-mueller.com e-mail: [email protected] Specifications subject to change


1 Specifications

Useful air capacity............................................................................... about 20 to about >= 100l/h

Switch-on pressure ............................................................................ 20 hPa 10% *

Shut-off pressure ............................................................................... 30 hPa 10%*

Alarm pressure .................................................................................. 10 hPa + 1 hPa

Over pressure .................................................................................... Safety valve opens at * about 35 hPa off full blowing power at about 45 hPa

Ambient temperature .......................................................................... - 25 C to + 50 C

Relative humidity ................................................................................ 83 % at ambient temperature of + 23 C

Dew point reduction ............................................................................ >--35 K referred to the ambient temperature

Desiccant ........................................................................................... Molecular sieve

Total drying capacity of the desiccant cartridge.............................................................................. Standard version

approx. 6000 l

Power supply ...................................................................................... 115 - 230V, 50/60 Hz 10%

Battery power ..................................................................................... 24 VDC =, 10 %

Battery power ..................................................................................... 36 VDC to 70 VDC

Signal connection for pressure drop ................................................... e.g. with 24 VDC (low-pressure alarm) external voltage

Power consumption at 230VDC/50Hz ................................................................................... ca. 12 VA 48/60VDC........................................................................................... ca. 11 W 24VDC .............................................................................................. ca. 10 W

Fuse protection................................................................................... 0,5 A automat in front panel

Air connection for hose ....................................................................... One air outlet for hose

Dimensions (h x w x d)........................................................................ 133/440/245 mm

Weight ................................................................................................ ca. 8 kg

Mounting .................................................................................. Mounted in ETSI-/19-rack or .................................................................................. wall-mounting Other pressures are request


2 Short description

The dehydrator supplies dry air up to 100l/h. This dry air is filled into transmission lines such as wave guides of radio link systems to prevent the occurrence of humidity and condensation. The dehydrator is designed for installation in ETSI standard cabinets, or in 19 racks, or for wall-mounting. It requires a height clearance of 3 units (19 special version only 2 units).

A pressure sensor in the dehydrator system automatically controls the correct pressure inside the wave guide. An external air distribution may be connected by hose to the air outlet ( each outlet with shut-off valve ). A number of air distributors may be cascaded , if this is required.

A drying cartridge, comprising humidity indicator in the screw cap (sight glass on the left side of the ventilator), contains a desiccant, which is used up the system is in operation. If the indicator changes colour from blue to pink (40% rF in the segment) the desiccant needs to be changed.

The compressor (diaphragm pump) has a useful air output of 100 liters/hour. Actual pressure, running-time and alarms are always available on the liquid crystal display of the front panel.

The compressor inside the dehydrator draws air in, which passes through the solenoid valve into the drying cartridge. The desiccant inside the drying cartridge removes moisture from the air. the dried air may then be used to ventilate the groups of wave guides, by passing it through a six fold distribution. the humidity of the desiccant (molecular sieve) is monitored by the indicator in the sight glass. Its colour changes at the humidity (saturation) increases, from a blue colour to pink. the period of time in which the adsorbent is used up wile depend on the leakage and the volume of the transmission line system, and also on the amount of humidity in the surrounding air. Under normal conditions, the contents of a drying cartridge has a useful life of more than one year, depending on the wave guides and their lengths. The desiccant will need to be renewed when this time is up. The total drying air capacity of a cartridge is about 6000 liters. When the indicator has changed from blue to pink (as described above) a drying air quantity of about 500 l can still be produced, after which the desiccant definitely must be replaced.


Item Description 1 Mounting bracket for 19 ETSI rack and wall mounting 2 Signaling interface Sub-D-15 pole (jack) 3 RS 232 interface Sub-D-15 pin (jack) (alternative fitting) 4 Power supply connection, either power connector for 115/230 VAC, or high-

current connector Sub-D-3 pin for DC 5 Automatic cut-out 6 Air outlet for hose (I.D. 13mm) 7 Signaling (LED flashes when signal output is off) 8 LCD Display to show functional state (operational status) 9 Menu keys 10 LED Display to show line fault and operation 11 RS 232 interface Sub-D-9 pin (jack) 12 Switch for switching signal output off 13 Drying cartridge with sight glass and humidity indicator 15 Power switch 20 Hose, I.D. 13mm 21 Air distributor indoors/outdoors

1 2

3 4

5

6

7 8

9 10 11

20

21

12 13

Figure 2 Overview of LLUE 110 (ETSI/19)

15


Item Description 1 Mounting bracket for 19 ETSI rack and wall mounting 2 Signaling interface Sub-D-15 pole (jack) 3 RS 232 interface Sub-D-15 pin (jack) (alternative fitting) 4 Power supply connection, either power connector for 115/230 VAC, or high-

current connector Sub-D-3 pin for DC 5 Automatic cut-out 6 Air outlet for hose (I.D. 13mm) 7 Signaling (LED flashes when signal output is off) 8 LCD Display to show functional state (operational status) 9 Menu keys 10 LED Display to show line fault and operation 11 RS 232 interface Sub-D-9 pin (jack) 12 Switch for switching signal output off 13 Drying cartridge with sight glass and humidity indicator 15 Power switch 20 Hose, I.D. 13mm 21 Air distributor indoors/outdoors

15 1 13

2 3

4

5

6

7 8

9 10 11

20

21

14

Figure 3 Overview of LLUE 110 (19, 2U)

12


Item Description 2 Signaling interface Sub-D-15 pole (jack) 3 RS 232 interface Sub-D-9 pin (jack) (alternative fitting) 4 Power supply connection, either power connector for 115/230 VAC, or high-

current connector Sub-D-3 pin for DC 5 Automatic cut-out 6 Air outlet for hose (I.D. 13mm) 7 Signaling (LED flashes when signal output is off) 8 LCD display to show functional state (operational status) 9 Menu keys

10 LED display to show line fault and operation 11 RS 232 interface Sub-D-9 pin (jack) 12 Switch for switching signal output off 13 Drying cartridge with sight glass and humidity indicator 15 Power switch 19 Seated console for 7R fitment 20 Hose, I.D. 13mm 21 Air distributor indoors/outdoors

21

20

19

2

3

15

5

6

7

8

9

10

11

12

13

Figure 4 Overview of LLUE110 (7R)

4


3 Design of the dehydrator

The dehydrator to be installed using the mounting brackets provided, either in the 19 or ETSI enclosure. A wall mounting is also possible by using the universal mounting brackets. You must obtain the mounting console with fastening kit if you want to install into a 7R rack.

4 Preparatory work and operation The power cable for mains voltage (230 VAC/50Hz) is to be plugged into the front panel, using a power connector, or for 24 V or 40-70 V direct current using a D-Sub high-current type. Signaling is by 15 pin D-SUB connector (included in the supply).

Figure 5 Power supply (all types)

RS 232 pin configuration Sub D 9 pin jack

Pin (D-Sub) Signal 1 DCD

2 RXD

3 TXD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 --

1A

1A 24V and 36V to 70V

115V - 230V AC

BSE

-

+

Battery power

Mains power


Figure 6 Pin assignment of connector

36V - 70V High current 24V High current 15 Pin D-Sub D-Sub connection D-Sub connection Signaling

Signaling Sub D 15 pin jack

Pin (D-Sub) Signal Pin (D-Sub Signal 1 NO 9 Open 2 NC 10 Open 3 COM 11 Open 4 Open 12 Open 5 Open 13 Open 6 Open 14 Open 7 Open 15 Open 8 Open

Floating relay (change-over) contact In quiescent state (device switch off or alarm) the COM port is short-circuited to NC. COM and NO are opened. In operation (nor alarm) COM and NC are opened, and COM is connected to NO.

After connecting, the toggle switch is activated and a green LED signals operational readiness. The diaphragm pump receives ca. 8 W of power. During the first filling operation the dehydrator keeps working until a pressure of 30 hPa is reached in the connected feeder lines. If the air pressure drops to about 20 hPa the pump switches on again until the pressure returns to 30 hPa. As protection against overpressure in the connected wave guides system (e.g. heat caused by solar radiation or faults in the pressure regulator), a relief valve is fitted to the dehydrator. This valve opens at an overpressure of about 38+5 hPa (fully open at about 45 hPa) and ventilates until normal pressure is restored in the wave guides system. The valve relief setting is fixed at the factory. Never change the setting of the overpressure valve!

A1

A2

A2

A3

-

+ +

-


5 Modes of operation

Models having manual regeneration (100 L device)

A double oscillating armature compressor takes in the air through a filter. This compressor forces the air through a solenoid valve and a drying cartridge containing the desiccant. The solenoid valve is controlled by a pressure-sensitive electronics system. The compressor switches on when the pressure drops below 20 hPa, and switches off again when the pressure reaches 30 hPa. The air passes through a safety valve set to 40 hPa, and then reaches the hose-tail fitting. The LLUE may be connected by hose from this straight to the wave guide, or to an air distributor. If the desiccant is used up (saturation), an easy to see paper indicator changes colour, to indicate that the desiccant need replacing. This paper shows the humidity as a percentage.

Figure 7 Air flow chart

drying cell

solenoid valve

diaphragm pump

filter

air intake

overpressure valve

pressure sensor indicator

waveguide

LLUE 110


6 Description of the device control electronics

Summary The dehydrator supplies the wave guide systems with dry air. It regulates the pressure inside the wave guide at a pre-determined pressure interval. The automatic control system is comprised of the processor, a pressure sensor, the wave guide system , a pump, and up to three solenoid valves.

Included is a monitoring of the temperature within the equipment.

There are a number of hour-meters, for recording the periods of operation (total hours, operational tie of the pump and duration of the ventilation), the totals being saved automatically each hour to a non-volatile memory (EEPROM). The hours of operation may also be saved manually. The system may therefore be shut down with the current meter readings, and switched back on again, to resume the count.

While the system is in operation, various error conditions are detected, shown by the LEDs, and stored away in the EEPROM. All conditions referring to a fatal error continue to be shown on an alarm contact. The error messages are saved to storage, so that they may be displayed again after the power supply has been interrupted.

The system may be operated via serial interface, or from the control panel of the controller. The software is available in English and German, the choice of language being effected by compiler option.

Operational hours meter The following hours are recorded: The total operational time of the device The total operational time of the pump The ventilating time of the wave guide system The meter readings are saved to EEPROM (non-volatile memory) as soon as a full hour is reached. This kind of storage can store only a limited number of write cycle times (106), so it is possible to keep on saving readings indefinitely. To keep the meter reading when the device is shut down it is possible to save all readings from the control panel or via the serial interface.

The ventilating time of the pump is recorded every second, the total operating time only after every one second.

Fault detection

Fault indication takes place several times each second. The detected errors are shown by LED and with one exception on the alarm contact (temporary over temperature). When an error occurs, it sets a bit correspondending to the type of error in the non-volatile memory. If the device is shut down, it may be operated as normal on being switched back on again, provided the error no longer occurs; the error list remains as it is and may be queried from the control panel or the serial interface. Errors may be reset by way of the interface.

The following errors are recorded: EEPROM error: should an error occur during reading or writing of the non-volatile memory it will

be shown here (blocks of data are given a CRC code 7 date bytes + 1 CRC byte). Errors on the I 2C bus are also displayed here.

Pressure loss: The max. ventilating time has been exceeded.

Low pressure error: The falling below of an adjustable low-pressure limit. The lower of the pressure interval must have been reached at least once.

Hardware Error: During the current measurement at least one component, say the pump or the valve, has a failure.


The control panel The control panel is comprised of a 2x16 character LCD display, and four keys (Up, Down, Enter and Esc(ape)).

On interface start-up the software version is first shown. The software version can be queried any time from the serial interface.

After 10 seconds the display changes. Now the pressure and the temperature inside the device are displayed.

From the display state (normal display) you can press the Esc key any time to effect a running down of the system (i.e. to store the meter readings to EEPROM).

normal display functions parameters

Figure 8 Menu

If some other key is pressed, the first menu level appears: Basic functions. You can go through the choice using the Up and Down arrow keys To choose the function you want, press enter Enter, to go back a level, press the Esc key. If More >> is selected, the next menu level appears.

The menu disappears after 10 seconds if no key is pressed, and the normal display once again is shown on the LCD display.

If the user is required to enter something, the control of pressure and regeneration will be interrupted until such time as the function in question is left.

run down active cell pressure temperature humidity incl.

more >>> more

back

ventilating time

meter hours

pump time

error message

LCD brightness

pressure interval

pump performance

alarm pressure limit

ESC

max. ventilating time


7 Menu functions

Basic functions Run system down: Store meter readings on EEPROM. Meter hours: The time the device has been operating is displayed. Ventilating time: The total time is displayed. Pump time: the total operational time of the pump is shown. Show errors: The errors list is displayed. The various error types are shown by pressing Up

and Down. Prevailing errors are indicated with an *. Press ESC to leave this function. EEPROM errors: If an error occurs during reading or writing of a non-volatile store, this

will be shown here (blocks of data are encoded CRC 7 data bytes + 1 CRC byte). Errors on the I 2C bus are also shown here.

Pressure error: The maximum ventilating time has been exceeded. Low pressure error: under running of the preset lower limit for pressure. This means that

the lower value of the pressure interval must have been reached at least once. LCD Brightness: In this function the brightness of the illumination may be adjusted. Pressing the

Up arrow increases the brightness, the Down arrow reduces it. Pressing Enter selects the setting, and leaves the function. Pressing Esc cancels the adjustment and leaves the function.

Show the parameters Pressure interval: You can query the pressure interval setting here. Lower pressure limit: Here you can query the lower limit for the pressure. Pumping efficiency: Displays the pumping efficiency (duty cycle) Ventilating time: Shows the max. time limit of a ventilation.

The serial interface The serial interface enables the system to be used linked to a computer using a suitable terminal program (e.g. HyperTerminal). The settings are 2400 bit/s and 8N1 (standard). The connection is effected by a commercial 9-pin modem cable (1:1 wiring).

The functions provided exceed the scope of the functions accessible from the control panel by a number of components extremely helpful during installation and service:

ver Shows the software version

pump Activates the pump. The automatic control system is not interrupted, so that the pump will switch itself off if it reaches or exceeds the maximum pressure.

valve 0 Switches a valve on or off. The control circuit can however cancel the setting.

req temp Shows the temperature which prevails inside the device.

req plim Here you can query the pressure interval setting.

req pduty Displays the duty cycle of the pump.

Set lcd Here you can adjust the brightness of the illumination. The + sign intensifies the brightness, whereas the sign reduces it. The setting is confirmed by pressing Enter, whereupon the function as abandoned. The setting is cancelled by Esc, when the function abandoned.

req tpumptot This shows the meter hours of the pump.


req ttot The operational hours of the device are indicated.

req tpumpvnt The total ventilation time is displayed.

shutdown Saving the meter readings to the EEPROM.

req press Indicates the pressure.

req tpmax Displays the limit value in respect of the maximum time of a ventilation cycle.

req error Displays the error list. The errors still prevailing are indicated with an *.

EEPROM error: Should an error occur during the reading or writing of the non-volatile memory, this will be shown here (blocks of data are CRC encoded: 7 data bytes + 1 CRC byte). Errors on the I 2C bus are also shown here.

Pressure error: The max. ventilating time has been exceeded. Low pressure error: The falling short of the pre-determined lower pressure limit. the lower

value of the pressure interval must have been reached at least once.

reset error Reset all errors and erase the error list. Pressing y initiates the function, n or Esc aborts it.

testmode The device is put into test mode. Here the control loop is by-passed, so that the pump, the valves and the heating elements may be switched on or off by hand. The keys send their codes to the serial interface. The test mode is abandoned by pressing Esc or test mode. In test mode the three LEDs flash together.

req plow Displays the lower pressure limit.

check EEPROM Reads the EEPROM and checks the CRC code for correctness. Note: The system must first of all be run down (use shutdown), otherwise the current values will be lost and the system will continue using the values last entered.

req curr Indicates the prevailing flow. Note: The output value does not claim to be correct, because the flow sensor is not calibrated.

test hw Measures the flow through the pump, the valves and the heaters. A check is made whether the flow is within a predetermined interval, and the result is output via the serial interface. An error results in a hardware fault. Certain elements are not tested, and designated n/a, depending on the configuration.


Figure 9 Block Diagram 230 VAC

Figure 10 Block Diagram 60 VDC


Figure 11 Mainboard layout

8 Accessories

Pos Description

1 Mounting console for 7R fitment

2 Air distributor for installing indoors incl. assembly kit

3 Air distributor for outdoors incl. assembly kit

4 Air hose

5 Spare part drying cartridge with desiccant

manualdehydrator100lenglisc mejor

Documents

illustrations figure

overview of llue

overview llue

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fm gertebau page

view line ventilator

contents page

block diagram