dixell ichill IC260L, User Manual

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1592015300 User manual iCHILL 200 L GB r1.3 09/09/2005
Fig. 1
27.3 D
IRECT 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 CO13 time delay the valve is forced on: minimum power. When the C013 is expired if the
thermoregulation requires more power the valve will be switched off (maximum power).
27.4 P
ART
W
INDING
This algorithm allows to reduce the start-up current when using hermetic or semi-hermetic compressors or medium – big screw
compressors.
Each compressor needs two relay outputs:
One is the PW motor coil #1 of the compressor;
One is the PW motor coil #2 of the compressor;
The time delay between the two outputs is determined by CO11 expressed in decimal of second in a range 0..5 seconds.
The maximum number of relay outputs is 8 this means 4 compressors with Part Winding start-up.
EXAMPLE
Part Winding configuration of the compressor relay outputs
Set the Par CF54 = 29. PW motor coil #1 relay of the compressor #1;
Set the Par CF55 = 30. PW motor coil #2 relay of the compressor #1;
27.5 C
OMPRESSOR
S
TART
-
UP
W
ITH
P
ART
W
INDING
First is turned on the PW motor coil #1 of the compressor #1 (relay K1 of fig2), after the CO11 delay it is turned on the second motor coil
of the same compressor (relay K2 of fig2).
To turn off the compressor the two relay outputs are both turned off at the same time.
Fig 2
27.6 P
ART
W
INDING START
-
UP OF
C
OMPRESSORS OR CAPACITY COMPRESSORS
If one or more capacity compressors are configured and the thermoregulation requires the full load start-up: the controller turns the
solenoid valve on, after 1 second the first motor part of the 1
st
compressor (relay K1 of Fig. 2) and then the complete control with the
contactor K2. Durning the CO13 time delay the step valve is forced on: minimum power. When the C013 is expired if the
thermoregulation requires more power the valve will be switched off (maximum power).
27.7 S
TAR
- D
ELTA
S
TART
This algorithm allows to reduce the start-up current when using hermetic or semi-hermetic compressors or medium – big screw
compressors.
Each compressor needs three relay outputs
The maximum number of relay outputs is 6 this means 2 compressors with Star-delta start-up.
EXAMPLE
Star-delta configuration of the compressor relay outputs
Set Par CF54 = 29. Star-delta line #1 relay of the compressor #1;
Set Par CF55 = 30. Star-delta line #2 relay of the compressor #1;