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General Description
The XC645CX is designed to manage both compressors and fans in a
condensing system such as a pack.
The compressors can be digital scroll, simple, multistage.
Control is by means of a neutral zone or proportional band and is based
on the pressure or temperature sensed in the LP suction (compressors)
and HP (condenser) circuits. A special algorithm balances the run hours
of the compressors to distribute the work load uniformly.
The controllers can convert both LP and HP pressures and displays them as temperatures.
The front panel offers complete information on the system’s status by displaying the suction and condenser pressure (temperatures),
the status of the loads, possible alarms or maintenance conditions.
Each load has its own alarm input that is able to stop it when activated. To guarantee the total system’s safety, there are also two
inputs for low and high pressure switches: when these are activated, the system is stopped.
By means of the HOT KEY the controller can be easy programmed at power on.
The controller can be connected to the X-WEB, controlling and monitoring system, thanks to the serial TTL output, using the
standard ModBus RTU protocol.
Components Related to the XC645CX
Digital Compressor Rack Controller-XC645CX
Name Description Part Number
Transformer TF5 230V/12Vac CD050010 00
Wiring kit 1.5m and 3m
CWC15-Kit (1,5m)
CWC30-Kit (3,0m)
DD500101 50
DD500103 00
Female disconnect able connector for digital input or
analog output (4pcs)
CABCJ15 (1,5m)
CABCJ30 (3,0m)
DD200101 50
DD200103 00
TTL /RS485 serial converter XJ485CX+CABRS02 J7MAZZZ9AA
4-20mA suction pressure transducer PP11 (-0.5–11bar) BE009302 07
4-20mA condenser pressure transducer PP30 (0–30bar) BE009302 04
Hot key for programming HOT KEY 4K DK00000100
• CWC15KIT and CWC30KIT: wiring kits
The XC645CX is provided with 2 socket connectors with 14 and 6 pins.
For the wiring the CWC15KIT (1.5m cable length) or CWC30KIT (3.0m cable
length) have to be used.
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