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*Support module control, can control up to 8 units;
*No step ,three steps ,four steps selectable；
*Support remote network control;
*Support password protection function, three level password protection when used touch HMI.
*Manual run function;
*Return oil protection;
*Pressure switch or pressure transducer selectable;
*Memory function when cut off the electric;
*Chilled water temp high/ low protection, Chilled water temp diff large protection;
*Cooling water temp high/low protection. Cooling water temp diff.large protection;
*Compressor PH / PL protection, Compressor pressure diff.large protection;
*Compressor exhaust temp high protection; Compressor current overload;
*Probe fault protection;
*Strong stability, 0.15-80MHz interference rejection, 4KV high voltage and surge resistance;
*SMT technology, 48 hrs burn-in test for ensuring quality;
*MODBUS-RTU RS485 Widely-used communication protocol, up to 1km max distance (Gateway Free);
*PCB Surface painted with CRC, avoid leakage, short circuit, and erosion from acid/ alkali/ alcohol/ humidity/salt spray;
*Wide voltage range, avoid misoperation caused by voltage fluctuation;
*All the input/output terminal have the indicator light ,easy to view;
*Control logic implemented on the control board. Continue working even HMI has fault;
*All the terminals on the controller board are made of Euro standard, easy to install.;
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Temp setting, Operation mode, Parameter amendation, Water pump parameter setting, Engineering trial run, Different valves start interval, Use pressure transducer or not, Pressure transducer amendation, Current amendation, Cooling water pump off temp, Chilled water pump off temp, Cooling water pump on/off temp, Stop valve parameter setting, Transducer detect range, Transducer protect value setting, Remote control selection, Service remind function, Release the fault lock, Input NO/NC, Compressor loading mode,
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*Controller dimension:222.6mm×158mm, fixed by 4 fixing holes (Hole dia:4.5mm), transverse hole distance 215mm,
vertical hole distance 113.5mm;
*20 digital inputs
*16 relay outputs
*8 analogue inputs
*2 analogue outputs
*Suitable for MT500 touchpanel HMI
*Relay power output: 250V/5A;
*Transformer power output: 12V/1A.
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