1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10
IC200D
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Or de-activate then activate the digital input
24.3 OPERATION WITH DIGITAL INPUT CONFIGURED AS HEAT PUMP
REGULATION REQUEST
Digital input configured as heat pump regulation request:
• if the contact is NOT ACTIVE the unit is in stand-by and the upper display shows OFF
• if the contact is ACTIVE the unit is ON and the upper display shows OnH (on heat pump)
When the digital input configured as heat pump regulation request is active, a compressor is switched on;
other compressor will be activated by other digital inputs.
If the digital input is active, the unit can be switched off by keyboard; to switch on the unit is necessary:
Switch it on by keyboard
Or de-activate then activate the digital input
Contemporary regulation request error
If two digital inputs are configured as chiller request and heat pump request and both are simultaneously
active, the unit is placed in OFF and the upper display shows the label Ferr.
24.4 OPERATION WITH DIGITAL INPUT CONFIGURED AS COMPRESSOR
REQUEST
It is possible to turn on and off the compressors without following or partially following the logic given by the
parameters CO14 and CO15, assigning a digital input the function to switch on / off a specific compressor or
a compressor of a specific circuit.
This use is foreseen only for ON / OFF compressors (not with capacity step and not inverter controlled).
In case of incorrect configuration of the digital inputs (condensing unit and compressors with capacity step,
digital input configured for a non-existing compressor, etc) is generated alarm ACF4 configuration.
Setting for operation with a digital input configured as compressor request:
Configure the digital input with the following values (depending on the number of compressors):
o
A digital input = o78 or c78 (compressor 1)
o
A digital input = o79 or c79 (compressor 2)
o
A digital input = o80 or c80 (compressor 3)
o
A digital input = o81 or c81 (compressor 4)
In this configuration, the logic of switching on and off of the compressors (set by parameters CO14 and
CO15) is not activated; the digital input switches on / off directly the compressor assigned.
If the compressor assigned to a digital input is not available (for alarm, maintenance, etc.), the request will
remain active and the compressor will be used for regulation when available; in case of unavailability of a
compressor, the controller does not distribute the request to another compressor.
For this operation mode it is not possible to configure the compressor rotation by operation time (CO72 must
be set to 0).
Setting for operation with a digital input configured as a compressor of a determinated circuit:
Configure the digital input with the following values (depending on the number of compressors):
o
A digital input = o84 or c84 (first compressor circuit 1)
o
A digital input = o85 or c85 (second compressor circuit 1)
o
A digital input = o86 or c86 (third compressor circuit 1)
o
A digital input = o87 or c87 (fourth compressor circuit 1)
o
A digital input = o88 or c88 (not used)
o
A digital input = o89 or c89 (first compressor circuit 2)
o
A digital input = o90 or c90 (second compressor circuit 2)
o
A digital input = o91 or c91 (third compressor circuit 2)
