| |
Module design, support the system with 1-8 modules. Stepless and four steps loading are selectable. Support 3 steps password protection, suitable for different types from Bizer, Hanbell etc. Support RS485 widely-used communication protocol, support remote LAN.
|
| |
*Support module units, support up to 8 units;
*Stepless and four steps loading available;
*Support password protection, used with HMI can implement three steps password protection;
*Support trial run function
*Support data logging function
*Special oil return protection function;
*Can choose pressure switch or pressure transducer;
*Support off memory function;
*Chilled water high/low temperature protection, chilled water temperature differential protection. Cooling water high/low temperature protection, cooling water temperature differential protection;
*Support probe lost protection;
*Strong stability, 0.15-80MHz interference rejection, 4KV high voltage and surge resistance;
*SMT technology, 48hours 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;
*Featured with tension and torsion resistance probe, long working life;
*Wide voltage range, avoid misoperation caused by voltage fluctuation;
*All I/O on control board fixed with indicator lights for intuitionistic estimation. Control logic implemented on the control board;
*Featured with European terminal blocks for I/O connection, easy assemble
|
| |
Temperature setting, operation mode, parameter emendation, pump parameter setting, trial run. Interval of solenoid valves startup, pressure transducer on/off, pressure transducer and current emendation, shutoff temperature of chilled/cooling water pump during standby, cooling tower fan turnon/turnoff temperature, solenoid valve turnon/turnoff temperature for generator cooling, liquid circuit valve parameter setting, pressure range of transducer, transducer protection value setting, remote control mode option, service remind and lock, fault unlocking , input on/off, compressor loading mode.
|
| |
*Controller dimension: 222.6x158mm fixed by 4 fixing holes (Hole dia:4.5mm), transverse hole distance 215mm, vertical hole distance 113.5mm
*20 digital inputs(Power protection, chilled water pump overload protection, chilled water flow switch protection, cooling water pump overload protection, cooling water flow switch protection, remote control, terminal chain control, chilled tower fan overload protection, compressor internal protection, compressor overload protection, compressor oil level protection, compressor oil pressure differential, compressor high pressure protection, compressor low pressure protection, compressor pressure differential protection)
*16 relay outputs: Modules operation, general fault output, chilled water pump, cooling water pump, compressor startup terminal, compressor operation terminal, compressor unload valve, compressor 0% valve, compressor 75%, liquid circuit valve, motor cooling valve, loading solenoid valve, cooling tower fan, four-way valve
8 analogue inputs: outlet Cooling water temperature, inlet Cooling water temperature, outlet Chilled water temperature, inlet chilled water temperature, air discharge temperature, high pressure transducer, low pressure transducer, compressor current transducer
*Analogue output: 2 channel
*Suitable for MT500 touch panel HMI
*Relay power output: 250V/5A
*Transformer power output: 12V/1A
|
