User manual

1592022700 User manual iCHILL 200CX Rel. 1.0 22/04/2009
18 THERMOREGULATION AND COMPRESSORS ROTATION
The CO13 parameter allows to choose the sequence of activation of the compressors.
CO13= 0
Sequential. Depending on the thermoregulation:
Activation sequence: COMP. 1  COMP.2
Deactivation sequence: COMP.2  COMP.1
CO13= 1
Rotation by hour. Depending on the time running hours the first compressor called by the thermoregulation is the one with less time
running hours. This algorithm is aborted if the unit is configured with one capacity compressor.
CO13= 2
Rotation by starts-up. Depending on the number of starts-up per hour the first compressor called or turned off is the one with less
starts-up number. This algorithm is aborted if the unit is configured with one capacity compressor.
19 SATURATION - CIRCUIT BALANCING
CIRCUIT SATURATION
CO14 = 0
Depending on the thermoregulation all the steps of the first circuit are turned on before using the second circuit.
CIRCUIT BALANCING
CO15 = 1: the circuit balancing is applicable only if there are 2 circuits and 2 resources for circuits (1 compressor and 1 capacity step
per circuit).
The circuit balancing allow to equalise the power supplied by the two circuits.
COMPRESSOR REGULATION
 When it is turned on each compressor runs for the CO01 minimum time. This minimum time is aborted in case of alarm, STAND-
BY / ON OFF by remote, defrost or partialization through NTC transducer.
 When it is turned off each compressor can restart only after the CO02 time delay.
 Both for sequential or rotation regulation with compressors or capacity steps: the successive resource is turned on after the CO03
delay in seconds.
 Both for sequential or rotation regulation with compressors or capacity steps: the successive resource is turned off after the CO03
delay in seconds.
 If the power supply fails all the outputs are forced off for the CO005 time delay.
20 COMPRESSORS START-UP
20.1 COMPRESSORS START- UP
Parameter CO10 defines the compressor start-up:
CO10=0 direct start up
CO10=1 part winding start up
20.2 DIRECT START- UP
Configure one relay output for each compressor (K1 relay Fig. 1). One relay output controls the corresponding compressor up to 2
resources.
Fig. 1
20.3 DIRECT START- UP OF A CAPACITY COMPRESSOR
When working with capacity compressors and with full power start-up: the controller turns the solenoid valve on first and then, after 1
second, the compressor motor. Durning the CO12 time delay the valve is forced on: minimum power. When the C012 is expired if the
thermoregulation requires more power the valve will be switched off (maximum power).