Water chillers and air-to-water heat pumps
CONNECT2 electronic control
Composition of the main board
Local control panel
Electronic control module with microprocessor and CPU, central automation, and access to the internal operating states. Input for adquisition of sensors reading and operating state of components. Outputs for circulation pump control, stages connection, and general failure signal. Connector for local control panel, installed on the unit. Connector for remote control panel (optional). Connector for relay card (optional). RS485 output via the MODBUS-JBUS protocol for the GTC link.
Ergonomic interface panel with multi-lingual LCD display (4 lines of 24 characters each) and LED indicators.
Reading of pressures and temperatures. Operating state and fault diagnostics. Master/slave management of two parallel-connected machines. Fault memory management. Pumps management. Hourly and weekly programming.
Remote control panel (optional) Relay board (optional)
Run, Stop, Reset or Remote control functions. Selection of COOLING or HEATING operating mode. Display of the information related to operations for direct display of multi-lingual messages in clear text. Direct display of the water temperatures and pressures. Complete management of compressors with a start-up sequence, count, and equalisation of operating times. Anti-short-circuit protection. Auto-adaptive and pro-active functions, adjusting the control in the compensation for the parameters. Device to reduce the stratified power being cascaded to the multi-compressors, based on the cooling or heating needs controlled by the water temperatures. Control of the internal operating parameters. Management of auxiliary electrical heater working alone or simultaneous to the heating pump. Adjustment of the setpoint with a 4-20 mA signal. Management of a second setpoint. Diagnosis of the operating and failure states: HP/LP, water flow, compressor motor(s), anti-frost. Remote management and surveillance. Master/slave management capable of managing two units in a single water loop, alternating the Master and Slave based on the operating times. Hourly and weekly programming.
Functions and design identical to the local panel.
Volt-free contacts card for display of the operation state and signalling of components failure. Available outputs: Failures: water flow, antifreeze, pump, fans, high and low pressures, compressors safety, discharge temperature. Operation state of compressors.
Serial RS485 outputs
MODBUS - JBUS open protocol (standard). LonWorks®, BACNET IP & BACNET MSTP protocols (optional). ETHERNET bridge (standard). CONNECT2 control allows that all CIAT products can be integrated into monitoring systems: Smart CIATControl Easy CIATControl: Optimal Water® functions /Optimal start & stop / Night cooling Power’Control, Cristo’Control CIATM2M
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A