Digital controller for refrigerating units
- Panel mount refrigeration controller
78 x 35 mm
- Up to 2 Configurable probe inputs
- 1 Digital input
- 4 relay outputs
- Several defrost activation
and defrost methods
- RTC for defrost activation
- RS 485 ModBus RTU slave serial port (optional)
- Separate connection to remote display
- 1 display, 4 digits, 12 mm
Red or blue colour
Process inputs:
2 temperature probe inputs
- PTC KTY81-121 (990 Ω @ 25 °C)
- NTC 103AT-2 (10KΩ @ 25 °C)
Overall accuracy: ± 0.5 % fs + 1 digit
1 digital input
- Free Voltage
Keyboard
- Mechanical keyboard:
4 multifunction keys
Process outputs
4 digital outputs
OUT1
- Relay SPST-NO 16A-AC1 6A-AC3 250 VAC
OUT2....OUT4
- Relay SPST-NO 8A-AC1, 3A-AC3 250 VAC
Power supply:
- 12 VAC/VDC± 10%
Functions
- Stand-by mode
- ON/OFF control
- Start-up delay
- Real Time Clock for defrost activation(optional)
- Compressor protection timer
Defrost
Defrost start/stop:
- Manual
- Time intervals
- At set hours with internal RTC
Defrost methods:
- By compressor stop
- By electrical heater
- By hot gas
- By cycle reverse
Evaporator Fan Control
Alarms
Up to 3 different kind of configurable alarms:
- Probe errors
- Temperature thresholds: (absolute or relative)
- External alarm
- Door alarm
Communication and programming:
Interfaces
Communication on TTL port to:
- Universal programming key
- Remote display
- RS 485 serial interface adapter TLCNV
RS 485 port(optional)
with ModBus RTU and J-bus (slave) protocols
Programming/configuration tools:
- Easy to use front interface for configuration
- Configuration software available for PC
Installation
Mounting method: panel mount
Case dimensions: 78 x 35 mm, depth 64 mm
Connections
Signals connection
- 2,5 mm² screw terminals block
Display and indicators
1 display 4 digits, h 12 mm
Red or blue colour
3 LED Bargraph + 5 indicating LEDs
Connectable to:
- Programming key
for PC connection, backup and other functions
- Remote display TVRY
File no. E206847
Ref. UL/CSA 60730-1-2-9