Advertisement
Connecting
⚠
⚠ ⚠
Note! The maximum load may not exceed 50 VA.
Expansion module
The expansion module is mounted in the electric cabinet on the intended rail. If there is no room, the module can be instal-
led in an external, enclosed cabinet and connected with a longer modular cable.
• Set the switches on the front of the expansion module to the WCS position
⚠
• Connect a modular cable between HP CRM Exp.out and HPC EM Exp.in
From Exp.out
Submersible sensor
Connections of expansion module for WCS operation:
Temperature input, T1: Submersible sensor (heat exchanger return line)
Temperature input, T2: -
Analogue output 0-10 V, AO1: Signal to pilot valve
Relay, DO1: Signal to circulation pump (no-potential closure, maximum 6 A)
Exp.in: Connection from HPC RM
Exp.out: Connection to possible additional module.
Submersible sensor
⚠
• Connect to T1 and GND
Circulation pump
⚠
• Connect to DO1.1 to 24 VAC 2.1
⚠
• Connect DO1.2 to the contactor coil (the relay coil) and further to 24 VAC 2.2
Pilot valve
⚠
• Connect AO1 to the signal input of the pilot valve
⚠
• C onnect GND to pilot valve GND. If GND is missing in the pilot valve, connect GND to 24 VAC 2.2 somewhere in the
system . It is most appropriate to jumper terminals 144 and 146 in the controller cabinet .
⚠
• Connect the pilot valve terminal G to 24 VAC 2.1
⚠
• Connect the pilot valve terminal G0 to 24 VAC 2.2.
•
Circ . pump
M
24 VAC 2.1
24 VAC 2.2
Exp.in
Pilot valve
G
G
Y
0
HPC EM
WCS
Exp.out
0-10V
VMILF102
alt.
GND
G G
Y
1
0
1
Danfoss – 5
Advertisement
