OJ Electronics OJ GreenZone Master Montageanweisung Seite 11

OJ GreenZone™ Master
Symptom
OJ GreenZone™ Master does not react to
the input "MIN"
Sensor shows incorrect value
Inlet fan non-controllable or inoperative
Exhaust fan non-controllable or inoperative
Circulation pump for cooling water
non-controllable or inoperative
Cause
Fault in the electrical connection
No power to one or more OJ GreenZone™
Modules
Fault in the Modbus cable connection
between OJ GreenZone™ Master and OJ
GreenZone™ Modules or between succes-
sive OJ GreenZone™ Modules
Defective OJ GreenZone™ Module
Defective OJ GreenZone™ Master
Fault in the electrical connection
Incorrect sensor type
Sensor not positioned correctly
Defective sensor
Fault in the electrical connection from
analogue output 1 (Aou1)
Disconnected or disabled power supply to
inlet fan or frequency converter
Defective OJ GreenZone™ Master
Fault in the electrical connection from
analogue output 2 (Aou2)
Disconnected or disabled power supply to
exhaust fan or frequency converter
Defective OJ GreenZone™ Master
Fault in the electrical connection from
analogue output 3 (Aou3)
Disconnected or disabled power supply to
circulation pump or frequency converter
Defective OJ GreenZone™ Master
Action
Check the electrical connection. See fig. 11.
The function should be activated when the input is activated (On).
Check the power supply to the OJ GreenZone™ Modules.
Correct power connection to an OJ GreenZone™ Module is illustrated in figs 8 and 9 of the OJ Green-
Zone™ Module instructions.
Check the Modbus cable connection between the OJ GreenZone™ Master and OJ GreenZone™ Mod-
ules and between successive OJ GreenZone™ Modules.
Replace OJ GreenZone™ Module.
Replace OJ GreenZone™ Master.
Check the electrical connection. See fig. 12.
Note that terminal 15 has no function and must therefore remain unused.
Check that the sensor is of type PT1000.
Check sensor position.
Check the resistance of the connected sensor with a suitable measuring instrument.
The sensor must have a resistance of approx. 1078 Ω at 20°C.
Replace sensor.
Check the electrical connection. See fig. 5.
Check the power supply to the fan and frequency converter.
Replace OJ GreenZone™ Master.
Check the electrical connection. See fig. 5.
Check the power supply to the fan and frequency converter.
Replace OJ GreenZone™ Master.
Check the electrical connection. See fig. 5.
Check the power supply to the pump and frequency converter.
Replace OJ GreenZone™ Master.
© 2017 OJ Electronics A/S
English / Instruction
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