User manual Document Nr. : 080631 Version : V1.0
MC 785 KLIMA 0-100C 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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