Technical Specification:

• ABB ACH550 are designed for HVAC application
• Protection class:  IP21, IP54(option).
• Output frequency: 0…500 Hz
• Power factor:  0.98
• Integrated: EMC filter, EMC(EN61800-3), Coated boards
• 6 digital inputs(DI),2 analog inputs(AI); 3 relay outputs(NO+NC), 2 analog outputs(AO).
• Both analog outputs can be used to feed the PT 100 sensor, any of the 6 digital inputs or analog inputs can be configured for PTC.
• Communication: Protocols as standard (RS485): BACnet MS/TP, Modbus RTU, N2 and FLN: Available as plug - in options: BACnet/IP router, lonWorks, Ethernet etc.
• Real - time clock and calendar inbuilt provides true time and date stamps to drive events. support maintenance
  
• Inbulit 14HVAC macro:  HVAC default ( for typical BMS), Supply fan, Return fan, Cooling tower, Sondenser, Booster pump, Pump alternation, Intrenal timer, .....…

Application:

• Pump, fan and HVAC system.