Z31E

Digital controller for refrigerating units with energy saving

2 probe inputs (or digital input), up to 2 relay outputs,  buzzer, defrost and energy saving functions.
Available with "Sensitive Touch" keyboard and extractable terminal block.
 

  • Process inputs:
    2 inputs for temperature probes:
    - PTC KTY81-121 (990 Ω @ 25 °C)
    - NTC 103AT-2 (10KΩ @ 25 °C)
    Overall accuracy: ± 0.5 % fs + 1 digit
    1 Free voltage digital input (alternativelly to the second input)
    Keyboard:
    - Mechanical
    - Sensitive-Touch

  • Process outputs:
    up to 2 relay outputs:
    - OUT1 SPDT or SPST-NO
      16A-AC1, 6A-AC3 250 VAC, 1 HP 250 VAC, 1/2HP 125 VAC
    - OUT2  SPDT
      5A-AC1, 3A-AC3 250 VAC, 1/2 HP 250 VAC, 1/3 HP 125 VAC
    12 A max for each terminal with extractable terminal block

  • Power supply:
    Power supply :
    - 12 VAC/VDC ±10%
    - 12...24 VAC/VDC ±10%
    - 100...240 VAC ±10%
    Frequency AC: 50/60 Hz
    Power consuption: around 4 VA

  • Control functions
    Stand-by mode
    Control strategies :
    - ON/OFF
    Up to 4 configurable alarms:
    - Probe error “E1”, “-E1”
    - Temperature tresholds: “Hi”, “Lo”
    Compressor protection
    Start-up delay
    Defrost
    - Defrost start/stop:
       Time based (continuos compressor working time)
       Temperature driven
       Dynamic Defrost (with second probe)
    - Defrost methods:
       By compressor stop
       By electrical heater
       By hot gas
       By cycle reverse
     
  • Communication and configuration:
    Communication on TTL port to:
    - Universal programming key
    - Remote display
     
  • Dimensions:
    78x35 mm, depth 64 mm + 11.5 mm with extractable terminal block
    Connections:
    - 2.5 mm² screw terminals block
    - 2.5 mm² extractable screw terminals block
    IP65 front frame protection, with gasket and screw brakets
    1 display with 3 digits, h 15.5 mm, red or blue colour

UL Recognition Canada USA

File no. E206847
Ref. UL/CSA 60730-1-2-9