Danfoss DHP-R 7UA HPC EM Інструкція з монтажу Посібник з монтажу - Сторінка 5

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Connecting

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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

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• 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

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• Connect to T1 and GND

Circulation pump

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• Connect to DO1.1 to 24 VAC 2.1

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• Connect DO1.2 to the contactor coil (the relay coil) and further to 24 VAC 2.2

Pilot valve

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• Connect AO1 to the signal input of the pilot valve

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• 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 .

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• Connect the pilot valve terminal G to 24 VAC 2.1

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• Connect the pilot valve terminal G0 to 24 VAC 2.2.

•

Circ . pump

24 VAC 2.1

24 VAC 2.2

Exp.in

Pilot valve

HPC EM

WCS

Exp.out

0-10V

VMILF102

alt.

GND

G G

Danfoss – 5