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C7000IOC (Modbus Master)
EBUS-Board, Port 3
© STULZ Gmbh – all rights reserved EN/02.2018/G17F
cyberlab original inSTrUcTionS
μPC electronic board
This electronic board is connected to the C7000 via RS485 line to exchange data. The μPC controls the compressor
speed acting on the inverter. It receives also signals from pressure transducers and NTC temperature probes to check
whether compressor works within the admitted range and to control the electronic expansion valve according to the
superheating temperature.
Terminal PGD1 for configuration of µPC
(not permanently connected)
Digital input
Assignation of block J4
ID1
-
ID2
-
ID3
-
ID4
set on
0V.
Compressor start/stop (with ramp)
ID5
Compressor start/stop (without ramp)
ID6
Alarm reset
ID7
Serial or pLAN/Modbus commutation
Dig output
Assignation of blocks J12, J13, J14
NO1
not used
NO2
not used
NO3
not used
NO4
not used
NO5
not used
NO6
not used
NO7
not used
Analog input Assignation of block J3
B1 (NTC)
-
B2 (NTC)
-
B3 (NTC)
Suction gas temperature
B4 (NTC)
Hot gas temperature
B5 (4-20mA)
Condensation pressure
B6 (0-5V)
Evaporation pressure
B7 (0-5V)
not used
Ana output
Assignation of block J5
Y1 (0-10V)
"out of operation range" position signal (not used)
Y2 (0-10V)
Compressor speed (not used)
Y3 (0-10V)
Expansion valve opening (not used)