Danfoss DHP-R 7UA HPC EM Manual de instruções de instalação - Página 9

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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 Shunt position.

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• Connect a modular cable between HP CRM Exp.out and HPC EM Exp.in

From Exp.out

Shunt temperature

Connections of expansion module for shunt operation:

Temperature input, T1: Sensor, shunt temperature .

Temperature input, T2: -

Analogue output 0-10 V, AO1: Signal to shunt valve.

Relay, DO1: Signal to circulation pump (no-potential closure, maximum 6A).

Exp.in: Connection from HPC RM.

Exp.out: Connection to possible additional module.

Sensor, shunt temperature

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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.

Shunt 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

Shunt valve

HPC EM

Shunt

Exp.out

0-10V

VMILF102

alt.

GND

G G

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