EVCB – VAV Unit Controller

מאפיינים מרכזיים

  • בקר ספציפי ליישום הניתן להגדרה
  • מקומי BACnet MS / TP או Modbus (ניתן לבחירה)
  • התחבר לתרמוסטט החדר באמצעות 3 חוטים
  • עד 4 כניסות ו -6 יציאות
  • זיהוי מצב לחץ אוטומטי אופציונלי
  • חיישני חדר דיגיטליים חדשים לבקר ה- VAV שלך
  • Field configured VAV algorithms
  • Built-in actuator 70in.lb [8Nm]
  • On board differential pressure sensor (pressure independent models)
  • Manual or automatic pressure mode selection (pressure independent models)
  • Configurable Inputs
    • 2 analog inputs
    • 2 digital inputs
  • Configurable Outputs
    • 2 analog outputs
    • Up to 4 TRIAC outputs
  • Configurable PI (Proportional-Integral) function
  • Simple air balancing and commissioning via digital room sensor
  • Independent, configurable proportional control band and dead band per ramp
  • Selectable internal or external temperature sensor (10KΩ)
  • Activate output with CO2 from digital room sensor or external CO2 sensor.
  • Change over by contact or external temperature sensor
  • 24Vac operation
  • Removable, raising clamp, non-strip terminals
  • 24Vac thermal fuse for overheat protection
  • BACnet MS/TP or Modbus RTU (selectable via menu)
  • Select MAC address via DIP switch or via network

BACnet MS/TP

  • MS/TP @9600, 19200, 38400 or 76800 bps
  • BACnet scheduler (up to 6 events)
  • Firmware upgradeable via network
  • COV (change of value)
  • Copy and broadcast configuration to other EVCB modules via menu or network
  • Automatic baud rate detection
  • Automatic device instance configuration

Modbus RTU

  • Modbus RTU @9600, 19200, 38400 or 57600 bps
  • RTU Slave, 8 bits (configurable parity and stop bits)
  • Single duct, cooling only
  • Single duct cooling and/or heating
  • Up to 4 stage reheat and/or cool
  • Up to 4 On/Off heat and/or cool
  • Up to 4 time proportioned (TPM) heat or reheat
  • Up to 2 analog (0-10Vdc) reheat and/or cool
  • Up to 2 floating heat and/or cool
  • Pressure dependent or pressure independent
  • With or without auto changeover
  • Supply/exhaust (requires an additional EVC)