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User manual Document Nr. : 080631 Version : V1.0

MC 785 KLIMA 0-100C Client : General Page : 4 of 16

In- and Outputs

Sensors : Temperature sensor (Pt-100, 3-wire to DIN/IEC 751)

RH sensor (0/+1 Vdc = 0/+100% RH)

Digital inputs : Day/night input (potential free input contact)

External alarm input (potential free input contact)

Spare input (potential free input contact)

Analog outputs : 2x 0/+10Vdc, Rbmin 10Kohm, programmable.

Relay outputs : RY1 Extra relay (C/NO/NC, 250Vac/10A not inductive)

Options extra relay (adjustable with parameter 20);

P20=0 Fail safe alarm (normal C-NO is closed and

during alarm C-NC is closed)

P20=1 Control alarm (normal C-NC is closed and

during alarm C-NO is closed)

P20=2 Function Cooling

P20=3 Function Heating

P20=4 Function Dehumidifying

P20=5 Function Humidifying

The following relays have a central common;

RY2 Dehumidifying(NO, 250Vac/10A not inductive)

RY3 Humidifying (NO, 250Vac/10A not inductive)

RY4 Heating (NO, 250Vac/10A not inductive)

RY5 Cooling (NO/NC, 250Vac/10A not inductive)

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VDH MC 785 KLIMA Specifications

General