Systemair CXE/AVC Modbus Air Conditioning System Speed Control Unit For 2 Fans
Systemair CXE/AVC Modbus Air Conditioning System. Speed control unit for up to 2 fans for the following functions.
Integrated voltage supply for sensors: +24 V, max. Integrated analog outputs A1 and A2: 0-10 V, Imax 10 mA (short-circuit-proof). Maximum load of relays K1 and K2: AC 250 V / 2 A. Maximum ambient temperature: +55 °C. Interference emission according to EN 61000-6-3.Interference immunity according to EN 61000-6-2. Setting of the desired speed through device or by external default, e. Connecting pressure sensors (refrigeration), measuring range 0-30 bar, 0-50 bar. Connecting temperature sensors, device measuring range -27... +75 °C, Sensor measuring range -10...
Connecting differential pressure sensors (air conditioning), measuring range 0-6000 Pa, acquisition of volume flows up to 65,000 m3/h. Connecting air velocity sensors, measuring range 0-1 m/s, 0-10 m/s. Combination sensors, CO2, sensor signal 0-10 V / 0-20 mA / 4-20 mA. Several sensors can be combined with the CXE/AV universal control module.
The actual value measured at the sensor is compared with the setpoint. This results in the 0-10 V output signal. Two 0-10 V outputs are integrated. These serve to activate EC fans, frequency inverters or other devices. Optionally, connected field devices (frequency inverters/EC fans with plugged MODBUS add-on module) can be activated by the integrated MODBUS-RTU interface (MODBUS Master function).
The device also contains two separate control circuits, a real time clock and timer functions. The universal control modules are especially suitable for the following applications: Refrigeration, air conditioning, general ventilation tasks, clean room technology. For typical applications in the areas mentioned, fast start-up is possible by selecting pre-programmed operating modes.