Superheat Regulation - XEV

The XEV series of drivers for stepper or pulse electronic expansion valve are designed for cases, wall cabinets and cold rooms with pulse or stepper EEV. These drivers are R407C and R407F compatible and therefore they ensure low environmental impact. Energy saving is guaranteed through evaporator efficiency optimization with auto-adaptive control of superheat. XEV are provided with advanced functions for the proper management of sub-cooler applications.

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Specifications

Housing
self-extinguishing ABS
Case
frontal 70x110mm; depth 60mm
Mounting
XEV11-12D: DIN Rail mounting
XEV21-22-32D: DIN Rail or wall mounting through integrated brackets
Front protection
IP20
Connections
screw terminal block < 2.5 mm2 wiring
Power supply
24, 110, 230Vac
24Vac/dc
Power absorption
depending on connected valve 20VA max
Display
3 digits, red LED, 14,2mm high
Data storing
on the non-volatile memory (EEPROM)
Operating temperature
0÷60 °C
Storage temperature
-25÷60°C
Relative humidity
20÷85% (no condensing)
Resolution
0.1°C
Accuracy (at ambient temperature)
±0.7°C ±1 digit

Features

  • ON/OFF (pulsed) expansion valve support with 30W max power and coil c.a.
  • Temperature analog inputs (NTC, PTC, Pt1000)
  • Pressure analog inputs (0÷5V, 4÷20mA)
  • Possibility to broadcast via LAN the pressure signal to multiplexed cabinets
  • Alarm management (visual, relay)
  • Cool Defrost for defrost time reduction
  • Superheat adaptive control
  • Standard communication protocol ModBUS-RTU
  • Hot Key for quick and easy programming

Documents & Drawings

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