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User Guide | Optyma™ iCO2
2.2 Electric Installation
Below is an illustration of the external connections that can be made in the remote control assembly.
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
+V -V
Module Controller
UNIVERSAL GATEWAY
INPUT: 12V DC
RS485-1
N L
M25
M20
4 additional knock-outs
(M20) are available
Modbus
to System Manager
Power supply to CDU
Short-circuit proof cable
NSGAFÖU 1,8/3kV
2 x 1,5mm²
1,2m (in PVC sleeve)
Internal wires are 1,5mm²
RJ12
RS485-2
RS485-3
PWR
-
+
M20
Communication to CDU
Twisted pair, shielded cable
UNITRONIC® BUS LD
1 x 2 x 0.22
1,8m
M20
Modbus
to evaporator
controllers
BC408445719305en-000101 | 15
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