dIXEL IPC400D SERIES User manual

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USER MANUAL – Release 1.2 of 01/01/2010 Page 1 of 191
Version: 02/03/2010
PROGRAMMABLE CONTROLLERS
IPC400D SERIES
USER MANUAL
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USER MANUAL – Release 1.2 of 01/01/2010 Page 2 of 191
Version: 02/03/2010
INDEX
1. GENERAL RECOMMENDATIONS 10
1.1 SAFETY PRECAUTIONS 10
2. GENERALITIES 11
2.1 MAIN FUNCTIONS 11
3. IPC400D SERIES FEATURES 13
4. ANALOGUE -DIGITAL INPUTS/OUTPUTS CONFIGURATIONS 14
4.1 ID1 –ID20 DIGITAL INPUTS CONFIGURATION 14
4.2 RL1-RL15 DIGITAL OUTPUTS CONFIGURATION 16
4.3 ANALOGUE INPUTS PB1 -PB10 CONFIGURATION 20
4.4 CONFIGURATION OF THE OUT1 / OUT4 PROPORTIONAL OUTPUTS 21
4.5 CONFIGURATION OF THE OUT5 / OUT6 PROPORTIONAL OUTPUTS 21
4.6 HOW TO CONFIGURE THE INPUTS AND OUTPUTS (FILE IO.CONF) 22
4.7 FURTHER CONNECTIONS 23
5. PARAMETERS IN TABLE FORM 23
6. IPRO.CHILL PROGRAMMABLE CONTROLLER 49
6.1 IPRO RANGE CONTROLLER LEDS MEANING/WORKING 49
7. IPRO.CHILL WIRING DIAGRAMS 50
7.1 IPC410D MODEL HARDWARE RESOURCES 50
7.2 IPC415D MODEL HARDWARE RESOURCES 51
7.3 NTC/PTC PROBES ANALOGUE INPUTS 52
7.4 DIGITAL INPUTS 52
7.5 4÷20MA PRESSURE TRANSDUCERS ANALOGUE INPUTS 52
7.6 0÷5V RATIOMETRIC PRESSURE TRANSDUCERS ANALOGUE INPUTS 53
7.7 OUTDOOR FAN SPEED CONTROL PWM OUTPUTS 53
7.8 OUTDOOR FAN SPEED 0÷10V / 4÷20mA OUTPUTS 53
7.9 SERVOMOTORS CONTROL 0÷10V / 4÷20MA PROPORTIONAL OUTPUTS 54
7.10 PROPORTIONAL OUTPUTS CONFIGURED FOR PILOTING AN EXTERNAL RELAY 55
7.11 VGIPC REMOTE TERMINAL COLLECTION 55
8. IPROEX60D EXPANSION MODULE 56
8.1 EXPANSION MODULE LEDS MEANING/WORKING 56
9. IPROEX60D EXPANSION MODULE WIRING DIAGRAMS 57
9.1 IPROEX60D EXPANSION MODEL HARDWARE RESOURCES 57
9.2 EXPANSION MODULE CONNECTION TO THE PROGRAMMABLE UNIT 58
10. ELECTRONIC THERMOSTATIC VALVE MANAGEMENT
DRIVER 59
10.1 DRIVER MODULE LEDS MEANING/WORKING 59

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10.2 UNIPOLAR/BIPOLAR VALVES DRIVER CONNECTION MODE 60
11. XEV20D ELECTRONIC THERMOSTATIC DRIVER WIRING
DIAGRAMS 61
11.1 XEV20D DRIVER MODEL HARDWARE RESOURCES 61
11.2 XEV20D DRIVER MODULE CONNECTION TO THE PROGRAMMABLE UNIT 62
11.3 NTC / PTC / PT1000 PROBE ANALOGUE INPUTS 63
11.4 0÷5V RATIOMETRIC PRESSURE TRANSDUCERS ANALOGUE INPUTS 63
11.5 4÷20MA PRESSURE TRANSDUCERS ANALOGUE INPUTS 63
12. RS485 SERIAL COMMUNICATION PERIPHERALS
CONNECTION 64
12.1 RS485 SERIAL LINE 64
12.2 RS485 MASTER SERIAL OUTPUT CONNECTION WITH MODBUS PROTOCOL 65
12.3 RS485 SLAVE SERIAL OUTPUT CONNECTION WITH MODBUS PROTOCOL 66
13. REMOTE CONNECTION VIA MODEM 67
13.1 PC CONNECTION FROM REMOTE VIA SERIAL OR EXTERNAL GSM MODEM 67
13.2 PC CONNECTION FROM REMOTE VIA INTERNAL SERIAL MODEM 68
14. CONNECTION TO THE IPRO.CHILL VIA THE NETWORK PORT 68
14.1 LOCAL CONNECTION TO THE PC 68
14.2 CONNECTION VIA INTRANET 69
14.3 CONNECTION VIA INTERNET 69
15. USING THE USB PORT 70
15.1 USB PORT (HOST) 70
16. USER INTERFACE 71
16.1 HOW TO MODIFY THE INFORMATION PRESENT IN THE MAIN SCREEN 72
16.2 UNIT SWITCH-ON IN CONDITIONING OR HEATING MODE 72
16.3 SET KEY 73
16.4 PROBES KEY 74
16.5 ALARM KEY 76
16.6 CIRC KEY 78
16.7 SERVICE KEY 80
16.7.1 Parameters programming ..........................................................................................................80
16.7.2 Time/Time bands.......................................................................................................................82
16.7.3 Compressors..............................................................................................................................83
16.7.4 Water pump ...............................................................................................................................83
16.7.5 Alarms display............................................................................................................................84
16.7.6 Historical alarms ........................................................................................................................84
16.7.7Defrost .......................................................................................................................................86
16.7.8 Heaters/Liquid line solenoid valve .............................................................................................86
16.7.9 I/O status....................................................................................................................................87
16.7.10 Thermostatic...........................................................................................................................87
16.7.11 Heat recovery .........................................................................................................................88
16.7.12 Auxiliary outputs .....................................................................................................................88
16.7.13 Free-cooling ...........................................................................................................................89
16.7.14 Screw compressor..................................................................................................................90
16.7.15 Control panel ..........................................................................................................................90
17. SELECTION –WORKING MODE –ENABLING –SWITCH-ON –
UNIT SWITCH OFF 91

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17.1 UNIT SWITCH-ON/OFF FROM THE KEYBOARD 91
17.2 UNIT SWITCH-ON/OFF FROM DIGITAL INPUT 91
17.3 SELECTING THE WORKING MODE: COOLING –HEATING 91
17.4 CHANGE OVER FUNCTION 92
17.5 COOLING –HEATING MODE SELECTION FROM KEYBOARD 93
17.6 COOLING –HEATING WORKING MODE SELECTION FROM ANALOGUE INPUT 93
18. WORKING WITH RTC 93
18.1 WORKING WITH CLOCK DISABLING DIGITAL INPUT 93
18.2 WORKING WITH “VENTILATION ONLY” DIGITAL INPUT (AIR-AIR UNIT ONLY) 93
18.3 WORKING WITH UNIT IN OFF FROM RTC IF ON IS FORCED FROM KEY 93
19. CONDENSING UNIT WORKING MODE 93
19.1 WORKING WITH DIGITAL INPUT CONFIGURED AS TEMPERATURE CONTROL REQUEST 94
19.2 WORKING WITH DIGITAL INPUT CONFIGURED AS COOLING REQUEST 94
19.3 WORKING WITH DIGITAL INPUT CONFIGURED AS HEATING REQUEST 94
20. COMPRESSORS TEMPERATURE CONTROL 94
20.1 COMPRESSOR TEMPERATURE CONTROL IN COOLING MODE 94
20.2 COMPRESSOR TEMPERATURE CONTROL IN HEATING MODE 95
20.3 TEMPERATURE CONTROL ON TWO INDEPENDENT CIRCUITS 95
21. CHOICE OF THE TYPE OF TEMPERATURE CONTROL 95
21.1 COMPRESSORS PROPORTIONAL TEMPERATURE CONTROL GRAPHICS (UNIT) 96
21.2 CIRCUIT N° 2 COMPRESSORS PROPORTIONAL TEMPERATURE CONTROL GRAPHICS 97
21.3 COMPRESSORS NEUTRAL ZONE TEMPERATURE CONTROL GRAPHICS 98
21.4 WORKING DESCRIPTION 99
22. NOTES COMPRESSORS TEMPERATURE CONTROL
WORKING 99
23. DYNAMIC SET-POINT FUNCTION 99
23.1 DYNAMIC SET-POINT WORKING GRAPHICS 100
24. ENERGY SAVING FROM ID FUNCTION 100
25. ENERGY SAVING FUNCTION AND TIMED SWITCH-ON AND
SWITCH-OFF 100
25.1 ENABLES THE DAILY/WEEKLY WORKING IN ENERGY SAVING AND AUTOMATIC SWITCH-
ON/OFF MODE 100
26. COMPRESSORS TEMPERATURE CONTROL ROTATION
CONTROL 101
26.1 FIXED SEQUENCE IN SELECTION OF THE CIRCUITS 101
26.2 FIXED SEQUENCE INSIDE THE CIRCUIT 101
26.3 COMPRESSOR FIFO ROTATION 101
26.4 CIRCUIT FIFO ROTATION 101
26.5 SELECTION OF THE CIRCUIT FOR BALANCING 101
26.6 SELECTION OF THE COMPRESSOR FOR BALANCING 101
26.7 SELECTION OF THE CIRCUIT FOR SATURATION 102
26.8 SELECTION OF THE COMPRESSOR FOR SATURATION 102

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26.9 SELECTION OF COMPRESSORS IN THE CIRCUIT ON THE BASIS OF "COMPRESSOR
WEIGHT" 102
26.10 SELECTION OF THE CIRCUIT ON THE BASIS OF "COMPRESSOR WEIGHT" (NOT AVAILABLE
FUNCTION) 102
27. COMPRESSORS SWITCH-ON 103
27.1 DESCRIPTION OF DIRECT START-UP 103
27.2 DIRECT START-UP 103
27.3 DIRECT START-UP OF A PARTIALISED COMPRESSOR 103
27.4 DESCRIPTION OF PART WINDING START-UP 104
27.5 PART WINDING START-UP OF A COMPRESSOR 104
27.6 PART WINDING START-UP OF A COMPRESSOR/S WITH 1 OR MORE PARTIALISATIONS 104
27.7 DESCRIPTION OF STAR DELTA START-UP 104
27.8 STAR DELTA START-UP OF A COMPRESSOR 104
27.9 STAR DELTA START-UP OF A PARTIALISED COMPRESSOR 105
28. PARTIALISATIONS WORKING 105
28.1 START-UP WITH PARTIALISED COMPRESSOR / IDLE START-UP 107
28.2 GAS BY-PASS VALVE FUNCTION ON COMPRESSOR START-UP 107
28.3 INTERMITTENT VALVE FUNCTION FOR SCREW COMPRESSORS 107
29. COMPRESSOR LIQUID INJECTION SOLENOID VALVE
FUNCTION 108
29.1 WORKING 108
30. COMPRESSOR WITH INVERTER MANAGEMENT (FUNCTION
NOT AVAILABLE) 108
31. MANAGEMENT OF THE TEMPERATURE CONTROL OF
COMPRESSORS WITH DIFFERENT COOLING CAPACITY (
FUNCTION NOT AVAILABLE) 109
32. COMPRESSORS IN TANDEM 110
33. COMPRESSORS MAINTENANCE REQUEST FUNCTION 110
34. EVAPORATOR WATER PUMP WORKING 110
34.1 ONLY ONE RELAY CONFIGURED AS EVAPORATOR WATER PUMP 110
35. EVAPORATOR WATER PUMP ROTATION 111
35.1 2 RELAYS CONFIGURED AS EVAPORATOR WATER PUMP 111
35.2 ROTATION OF THE EVAPORATOR WATER PUMPS FROM DIGITAL INPUT 111
36. EVAPORATOR PUMP ANTI-FREEZE MANAGEMENT 111
37. WATER PUMP MAINTENANCE REQUEST FUNCTION 112
38. SUPPLY FAN WORKING 112

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38.1 SUPPLY FAN DURING DEFROST 112
38.2 HOT START FUNCTION 113
39. FUNCTION OF SUPPLY FAN MAINTENANCE REQUEST 113
40. CONDENSER WATER PUMP WORKING 113
40.1 ONLY ONE RELAY CONFIGURED AS CONDENSER WATER PUMP 113
41. CONDENSER WATER PUMP ROTATION 114
41.1 2 RELAYS CONFIGURED AS CONDENSER WATER PUMP 114
41.2 ROTATION OF THE CONDENSER WATER PUMPS FROM DIGITAL INPUT 114
42. CONDENSER PUMP ANTI-FREEZE MANAGEMENT 114
43. WATER PUMP MAINTENANCE REQUEST FUNCTION 115
44. SWITCH-ON/OFF WORKING WITH PUMP-DOWN 115
44.1 PUMP-DOWN FUNCTION WITH CIRCUIT LOW PRESSURE PRESSURE SWITCH 116
44.2 PUMP-DOWN FUNCTION WITH DEDICATED PRESSURE SWITCH 116
44.3 PUMP-DOWN FUNCTION FROM ANALOGUE INPUT 116
44.4 PUMP-DOWN FUNCTION IN COOLING MODE ONLY (Configuration possible only for reversible
units with the enabling of the working of the compressors in heating mode). 116
44.5 LOW PRESSURE ALARM DURING THE PUMP-DOWN 116
44.6 WORKING EXAMPLES: 117
44.6.1 Pump-down active only in switch-off based on LP pressure switch.........................................117
44.6.2 Pump-down active in switch-off and re-start, based on dedicated pressure switch. Pump-down
pressure switch intervention threshold higher than the intervention threshold of the LP pressure switch.117
44.6.3 Pump-down active in switch-off and re-start, based on dedicated pressure switch. Pump-down
pressure switch intervention threshold lower than the intervention threshold of the LP pressure switch.117
44.6.4 Pump-down active in shut-down and in re-start, based on the analogue input relative to the
evaporation pressure..............................................................................................................................118
44.7 TIMED PUMP DOWN FUNCTION 118
44.8 PUMP DOWN ALARM IN START-UP AND STOPPING 118
45. CIRCUITS UNLOADING 119
45.1 UNLOADING FROM CONDENSATION HIGH TEMPERATURE PROBE 119
45.2 UNLOADING FROM CONDENSATION HIGH TEMPERATURE TRANSDUCER 120
45.3 UNLOADING BY LOW PRESSURE TRANSDUCER 121
45.4 UNLOADING DUE TO EVAPORATOR WATER INLET HIGH TEMPERATURE 121
45.5 EVAPORATOR WATER LOW TEMPERATURE UNLOADING (NO AIR-AIR) 121
45.6 WORKING IN UNLOADING MODE NOTES 122
46. CONDENSATION FANS REGULATOR 122
46.1 IF THE PWM/ 0÷10V SIGNAL TRIAC OUTPUT IS USED 123
46.2 IF THE STEP RELAY OUTPUTS ARE USED 123
46.3 UNIQUE OR SEPARATE CONDENSATION 124
46.4 PROPORTIONAL FAN REGULATOR GRAPHICS 125
46.5 CONDENSATION FAN REGULATOR ON / OFF IN COOLING MODE GRAPHICS 125
46.6 CONDENSATION FAN REGULATOR ON / OFF IN HEATING MODE GRAPHICS 125
47. ANTI-FREEZE/SUPPORT HEATERS REGULATOR 126
47.1 HEATER OUTPUT WORKING IN COOLING OR HEATING MODE 126
47.2 TEMPERATURE CONTROL IN COOLING MODE 126

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47.3 TEMPERATURE CONTROL IN HEATING MODE 126
47.4 TEMPERATURE CONTROL OF THE AIR/AIR UNIT HEATERS 126
47.5 SUPPORT/ANTI-FREEZE/BOILER HEATERS WORKING GRAPHICS 127
47.6 TEMPERATURE CONTROL OF THE EVAPORATOR ANTI-FREEZE HEATERS 127
47.7 TEMPERATURE CONTROL OF THE CONDENSER ANTI-FREEZE HEATERS 127
47.8 TEMPERATURE CONTROL OF THE BOILER HEATERS (ANTI-FREEZE) BOILER FUNCTION 128
48. ANTI-FREEZE HEATERS WORKING FROM DIGITAL INPUT 129
49. DEFROST FUNCTION 129
49.1 DESCRIPTION OF DEFROST PARAMETERS 132
49.2 DEFROST WITH CONDENSATION FANS 134
49.3 SUPPLY FAN DURING DEFROST 134
50. RECOVERY FUNCTION 134
51. HEAT RECOVERY WORKING FROM DIGITAL INPUT 135
51.1 UNIT WITH SEPARATE HYDRAULIC CIRCUITS 135
51.2 UNIT WITH TWO PARALLEL HYDRAULIC CIRCUITS 136
52. HEAT RECOVERY WORKING BY MEANS OF TEMPERATURE
PROBE 138
52.1 USER SIDE PRIORITY 138
52.2 HEAT RECOVERY SIDE PRIORITY 139
53. FUNCTION FOR PRODUCTION OF DOMESTIC HOT WATER 140
53.1 MANAGEMENT OF THE DOMESTIC HOT WATER PUMP 141
53.1.1 CONTINUOUS WORKING OF THE DOMESTIC HOT WATER PUMP ..................................142
53.2 ANTILEGIONELLA FUNCTION 142
53.3 MANAGEMENT OF THE PRIORITY BETWEEN THE PRODUCTION OF DOMESTIC HOT WATER
AND WATER CIRCUIT UTILITIES 142
53.4 SOLAR PANELS WATER PUMP 143
53.5 DOMESTIC HOT WATER FLOW SWITCH AND SOLAR PANELS MANAGEMENT 143
53.6 PRODUCTION OF DOMESTIC HOT WATER WITH AIR/WATER UNIT, WATER/WATER IN
HEATING AND COMMON RETURN MODE: CF01=1,2 - CF02=3 -FS01=1 143
53.6.1 DOMESTIC HOT WATER DURING WORKING IN WINTER MODE ......................................143
53.6.2 DOMESTIC HOT WATER IN SUMMER CYCLE (ONLY UNITS WITH CF02=3)....................143
53.6.3 DEFROST OF THE AIR-WATER UNITS (ONLY WITH CF02=2 O CF02=3)..........................144
53.7 PRODUCTION OF DOMESTIC HOT WATER WITH AIR/WATER UNIT, WATER/WATER IN
HEATING AND DEDICATED RETURN MODE: CF01=1,2 -CF02=3 - FS01=2 144
53.7.1 DOMESTIC HOT WATER DURING WORKING IN WINTER MODE ......................................144
53.7.2 DEFROST OF THE AIR-WATER UNITS (ONLY WITH CF02=2 O CF02=3)..........................144
53.7.3 PRODUCTION OF DOMESTIC HOT WATER DURING WORKING IN SUMMER CYCLE
(ONLY UNITS WITH CF02 =3) ..............................................................................................................145
53.7.4 MANAGEMENT OF THE REFRIGERANT LOAD IN THE CASE OF DOMESTIC HOT WATER
PRODUCTION IN THE SUMMER CYCLE ............................................................................................146
54. FREE COOLING 147
54.1 RESOURCES TO BE CONFIGURED 147
54.1.1 ANALOGUE INPUTS ...............................................................................................................147
54.1.2 DIGITAL OUTPUTS.................................................................................................................147
54.1.3 ANALOGUE OUTPUTS...........................................................................................................147
54.2 FREE-COOLING WITH INTERNAL FAN LAYOUT 147
54.3 FREE-COOLING WITH EXTERNAL VENTILATION LAYOUT 148

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54.4 WORKING 148
54.5 FREE-COOLING WORKING IN HEATING MODE 149
54.6 ANTI-FREEZE ALARM PREVENTION 149
54.7 FREE COOLING VENTILATION WORKING MODE 150
54.8 FRACTIONED BATTERY 150
55. AUXILIARY RELAY FUNCTION 151
55.1 DIRECT ACTION WORKING ENABLED 151
55.2 REVERSE ACTION WORKING ENABLED 151
56. WORKING OF THE AUXILIARY ANALOGUE OUTPUTS (0÷10
VOLT) 152
57. ALARMS 153
57.1 COMPRESSORS BLOCK ALARMS 153
57.2 PROBE BREAKDOWN 154
57.3 HIGH PRESSURE PRESSURE SWITCH ALARM 154
57.4 COMPRESSOR FLOW HIGH TEMPERATURE ALARM FROM DIGITAL INPUT 155
57.5 LOW PRESSURE PRESSURE SWITCH ALARM 156
57.6 OIL FLOAT/PRESSURE SWITCH ALARM 157
57.7 CONDENSATION TEMPERATURE/HIGH PRESSURE ALARM 158
57.8 LOW CONDENSATION TEMPERATURE/PRESSURE (IF THE LOW PRESSURE
TRANSDUCERS ARE NOT USED) 159
57.9 LOW EVAPORATION PRESSURE IF THE LOW PRESSURE TRANSDUCERS ARE USED 160
57.10 AIR/AIR UNIT EVAPORATOR/CONDENSER AIR OUTLET LOW TEMPERATURE IN COOLING
WORKING MODE ANTI-FREEZE ALARM 161
57.11 AIR/AIR UNIT EVAPORATOR/CONDENSER AIR OUTLET LOW TEMPERATURE IN HEATING
WORKING MODE ANTI-FREEZE ALARM 162
57.12 COLD SIDE FLOW SWITCH ALARM (DIFFERENTIAL PRESSURE SWITCH) 163
57.13 HOT SIDE FLOW SWITCH ALARM (DIFFERENTIAL PRESSURE SWITCH) 164
57.14 SUPPLY FAN CIRCUIT BREAKER ALARM 166
57.15 DOMESTIC HOT WATER PUMP FLOW SWITCH ALARM 167
57.16 DOMESTIC SOLAR PANELS WATER PUMP FLOW SWITCH ALARM 167
57.17 CIRCUIT BREAKER ALARM 168
57.18 DISCHARGE COMPRESSORS HIGH TEMPERATURE ALARM FROM ANALOGUE INPUT 169
57.19 EVAPORATOR WATER INLET HIGH TEMPERATURE ALARM 169
57.20 CONDENSATION FAN CIRCUIT BREAKER ALARM 170
57.21 DEFROST ALARM 171
57.22 UNLOADING SIGNAL DUE TO HIGH CONDENSATION TEMPERATURE/PRESSURE IN
COOLING WORKING MODE 172
57.23 HEAT RECOVERY DISABLING SIGNAL DUE TO HIGH CONDENSATION
TEMPERATURE/PRESSURE IN COOLING WORKING MODE 173
57.24 UNLOADING SIGNAL DUE TO LOW EVAPORATION PRESSURE IN HEATING WORKING MODE174
57.25 UNLOADING SIGNAL DUE TO EVAPORATOR WATER INLET HIGH TEMPERATURE 175
57.26 PUMP DOWN ALARM WITH LOW PRESSURE PRESSURE SWITCH/TRANSDUCER IN
STOPPING 176
57.27 PUMP DOWN ALARM WITH LOW PRESSURE TRANSDUCER IN START-UP 177
57.28 EVAPORATOR WATER PUMPING UNIT CIRCUIT BREAKER ALARM 178
57.29 HEAT RECOVERY CONDENSER WATER PUMPING UNIT CIRCUIT BREAKER ALARM 179
57.30 UNIT N. 1 BLOCK GENERAL ALARM 179
57.31 UNIT N. 2 BLOCK GENERAL ALARM 180
57.32 COMPRESSORS MAINTENANCE ALARM 181
57.33 FLOW FAN PUMPS MAINTENANCE ALARM 181
57.34 CONDENSER PUMPS MAINTENANCE ALARM 181
57.35 RTC ALARM 182
57.36 RTF ALARM 182
57.37 EEPROM ALARM 182
57.38 NETWORK FREQUENCY ALARM 183

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UNIT CONFIGURATION 184
57.39 184
57.40 REMOTE TERMINAL ALARM 187
57.41 NOTE: ALARM RELAY AND BUZZER 187
58. NO VOLTAGE 187
59. AUTOMATIC TO MANUAL RESRT ALARMS DIAGNOSTICS 187
60. OUTPUTS BLOCK TABLE 188
60.1 CIRCUIT “A” OUTPUTS ALARM BLOCK TABLE 188
60.2 CIRCUIT “B” OUTPUTS ALARM BLOCK TABLE 189
60.3 COMPRESSOR "C" ALARMS OUTPUTS BLOCK TABLE 190

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1. GENERAL RECOMMENDATIONS
To be read before further use of the unit.
•This manual constitutes an integral part of the product and must be kept near to the appliance for easy
and quick consultation.
•The regulator must not be used with functions different to those described below. In particular, it cannot
be used as a safety device.
•Before proceeding, check the limits of application.
1.1 SAFETY PRECAUTIONS
•Check the power supply voltage is correct before connecting the device.
•Only expose the front panel of the device to atmospheric agents: front protection with IP65 rating with rear
gasket. Only use the regulator within its working limits.
•Warning: Disconnect any electric connections before performing any type of maintenance.
•The device must never be opened.
•In the case of malworking or fault, send the device back to "DIXELL s.r.l. (see address) with a precise
description of the problem.
•Consider the maximum current applicable to each relay (see Technical Data).
•Make sure that the probe cables, the regulator power supply cables and the load cables remain separate
and sufficiently distant from each other, without crossing each other or forming coils.
•Install the probes in a way that they are not accessible to any users.
•In the case of applications in particularly critical industrial environments, it may be useful to also use
network filters (our mod. FT-PW network filter), (our mod. FT-IL filter to be connected in parallel to the
inductive loads).