1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10
IC200D
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15.4 MINIMUM LOAD START- UP
Par. CO07:
configuration of the start-up with minimum load.
This parameter allows to configure the first capacity step operation mode for alternative compressors and
screw compressors.
CO07=0
First capacity step is used only to start the compressor at the minimum load; the valve is switched on for
CO13 seconds, then it is switche off.
CO07=1
First capacity step is used as lower step of the regulation.
CO07=2
SCREW COMPRESSOR
First capacity step is used only to start the screw compressor at the minimum load; the valve is ON when the
compressor is OFF and it remains ON for CO13 seconds after the switching ON of the compressor.
CO07=3
SCREW COMPRESSOR
First capacity step is used as lower step of the regulation; when the compresor is OFF the valve is ON.
15.5 INTERMITTENT SOLENOID VALVE FOR SCREW COMPRESSOR
Some screw compressors have an intermittent solenoid valve; when the compressor is ON, this valve stays
CO08 ON and CO09 OFF.
Due to the high number of switching valve, the function must be used by configuring an analog
output as output ON / OFF for intermittent valve and connect it to an external relay type SSR (with
appropriate characteristics dell'Ichill exit).
16.
COMPRESSOR INVERTER CONTROLLED
The signal 0÷10V is given by one of 4 configurable outputs of the Ichill (OUT1÷OUT4).
The compressor inverter controlled can be used only with proportional regulation (parameter St11=0).
Possible unit configuration:
1 circuit: 1 compressor inverter controlled
1 circuit: 1 compressor inverter controlled and maximum 2 ON/OFF compressor (managed by relay)
2 circuits: 1 compressor inverter controlled per circuit
2 circuits: 1 compressor inverter controlled and maximum 2 ON/OFF compressor (managed by
relay) per circuit
First step to be activated is always the compressor inverter controlled; it will be swiched on when the
regulation requests 100% of the compressor power.
To increase / decrease the power the compressor works by step of 1% of the power; every step is delayed
by CO62 at the start-up of the compressor and CO71 when the compressor works normally.
When the compressor inverter controlled is activated, it works at power configured by CO61 parameter for
CO60 seconds; after that:
if the parameter CO62=0 the compressor modulates the power according to the regulation request
the parameter CO62
0 the compressor is forced to works at maximum power and then it modulates
the power according to the regulation request
It is possible to limit the output % of the inverter compressor in Chiller, Heat pump and Domestic hot hot
water:
o
maximum % output inverter in Chiller (parameter CO79)
o
maximum % output inverter in Heat pump (parameter CO80)
o
maximum % output inverter in Domestic hot hot water (parameter CO81)
