Technical data

Ichill 200CX EVO rev 1.1 14/11/2013
Pag. 41 of 151
When the temperature is inside the neutral zone, a timer is activated (parameter CO53); when this time is
elapsed, the Ichill switch on all the compressor to avoid an stationary situation.
If the parameter value is 0 the function is non activated.
Par. CO54 Maximum time of work in neutral zone without rotation resource
When the temperature is inside the neutral zone and only one compressor is ON, a timer is activated
(parameter CO54); when this time is elapsed, the Ichill switch off the compressor and swith on an available
compresso.
If the parameter value is 0 the function is non activated.
18. COMPRESSORS MANAGEMENT
18.1 Compressors Start- Up
The parameter CO10 defines the compressor start-up:
CO10=0 direct
CO10=1 part winding
Direct Start-Up
It is necessary to configure one relay to drive the contactor of the compressor.
EXAMPLE
Direct start up configuration for one compressor
Fig. 1
Part Winding Start-Up
Each compressor needs two relay outputs:
 Part Winding coil 1 of the compressor;
 Part Winding coil 2 of the compressor.
The time delay between coil 1 and coil 2 activation is CO11 (decimal of second, in a range 0..5 seconds).
EXAMPLE
Part Winding configuration of the compressor relay outputs
RL1: set Par CF41 = c39 Part Winding coil 1 the compressor 1;
RL2: set Par CF42 = c40 Part Winding coil 2 of the compressor 1.
Compressor Start- up With Part Winding
First step: the Part winding coil 1 of the compressor 1 (relay K1 of fig2) is switched on
Second step: after the CO11 delay is turned on the Part winding coil 2 of the compressor 1 (relay K2 of fig2).
To turn off the compressor the two relay outputs are both turned off at the same time.