references
DESCRIPTION
Compressors
OF THE MAIN COMPONENTS
The CIAT electronic control module performs the following main functions: chilled water temperature control water temperature control based on the outdoor temperature (water law) control for low temperature energy storage second setpoint management complete management of compressors with start-up sequence, metering and operating time balancing self-regulating and proactive functions with adjustment of drift control for parameters continuous capacity-reduction system for compressors according to refrigerating requirements management of compressor short cycle protection management of the machine operation limit according to outdoor temperature operating and fault status diagnostics management of a fault memory allowing a log of the last 20 incidents to be accessed, with operating readings at the time of the fault master/slave management of two machines in parallel with balancing of the operating times and automatic switchover if a fault occurs on one machine machine time schedule display and access to the operating parameters via a multilingual LCD screen with 4 lines of 24 characters
double-screw accessible hermetic type optimised rotor profile guarantees high efficiency built-in electric motor with star-delta start motor features integral electronic protection direction of rotation and phase balance control integrated overpressure valve discharge temperature control pressurised lubrication control integrated 3-stage oil separator crankcase heater fine suction filter discharge valve continuous power control slide mounted on anti-vibration dampers dry expansion shell and tube high performance copper tube bundle steel body anti-corrosion baffles cellular foam thermal insulation polyurethane film
Evaporator
with
UV-resistant
Air-cooled condenser
all-aluminium micro-channel coils direct drive propeller fans rotation speed: 910 or 720 rpm three-phase electric motors, IP 54
Remote control
Refrigerating accessories
dehumidifier filters with rechargeable cartridges hygroscopic sight glasses solenoid valves on liquid refrigerant lines electronic expansion valves HP/LP pressure transmitters high and low pressure safety valves chilled water control sensor (supply and return) outdoor temperature sensor evaporator antifreeze protection sensor compressor discharge sensor evaporator water circulation controller
Control and safety devices
IP 44 400V 3-ph 50 Hz power supply + Earth (-10% / +10%) wire numbering and electrical component marking safety fused disconnect master switch with external handle control circuit transformer compressor motor contactors fan motor switches fused motor compressors fan motor protection main earth connection phase controller (direction, absence, asymmetry, over and under voltage)
Electrics box
XTRACONNECT2 is equipped as standard with an RS485 serial port offering a range of remote management, monitoring and diagnostic options via the communication bus. Several contacts are available as standard, enabling the POWERCIAT2 to be controlled remotely by wired link: automatic operation control: when this contact is open, the machine stops setpoint 1 / setpoint 2 selector: when this contact is closed, a second cooling setpoint is activated (energy storage mode, for example) setpoint adjustable via 4-20 mA signal: this input is used to adjust the setpoint in COOLING mode compressor load shedding: closing the contact(s) concerned allows the power or refrigerating consumption of the machine to be limited by stopping one or more compressors water pump 1 and 2 control: these outputs control the switches for one or two water pumps fault reporting: this contact indicates the presence of a major fault which has caused one or more refrigerating circuits to stop
Energy meter (option)
Electronic control module XTRACONNECT2