K31

Mini-programmer controller

  • Panel mount controller 78 x 35 mm
  • 1 Configurable probe input
  • 2 digital inputs
  • Up to 5 digital outputs
  • PID controller with:
    *  Independent timer (optional)
    *  8 segment programmer (optional)
    *  Wattmeter
    *  Counter for worked days and hours
    *  Compressor protection timer
  • TTL or RS485 Modbus-RTU ports
  • 1 display line, 4 digit, h 12 mm, red colour

Process inputs:

1 temperature probe input

- Thermocouples: J, K, R, S,T
- PTC KTY81-121 (990 Ω @ 25 °C)
- NTC 103AT-2 (10KΩ @ 25 °C)
- RTD: Pt100
- Voltage (V): 0..1 V, 0/1...5 V , 0/2...10 V
- Voltage (mV): 0...50 mV, 0...60 mV, 12 ...60 mV
- Current (mA): 0/4...20 mA
- Custom linearisation and IR probes (J.K type)
Overall accuracy: ± (0,5 % span ± 1 digit @25 °C); Tc S: ± (1 % span ± 1 digit @ 25 °C)

2 digital inputs

- Free Voltage

Keyboard

Mechanical: 4 multifunction keys

Process outputs

Up to 4 outputs

OUT1
- RELAY SPDT, 8A
- SSR Drive
OUT2
- RELAY SPDT, 8A
- SSR Drive
OUT3/OUT4
- RELAY SPST-NO, 5A
- SSR Drive

Power supply:

- 12 VAC/VDC
- 24 VAC/VDC
- 100… 240 VAC (50/60 Hz)
Transmitter power supply: 10 VDC (±10%), 20 mA max (Note 1)

Functions

- ON/OFF control with neutral zone
- PID single action or double action (Heat/Cool) with overshoot control
- Bumpless ramp to set point change
- Start-up delay
- Independent timer with 5 functioning modes (optional)
- Setpoint change from digital inputs
- Digital Setpoint retransmission (Note 1)
- Up to 4 memorized setpoints
- 8 segment programmer with events recovery, 2 events and guaranteed soak (optional)
- Wattmeter for calculating the instantaneous power and energy used
- Counter for days and hours worked with programmable threshold for programmed maintenance
- Compressor protection timer

Autotuning

- Adaptive Autotuning
- Oscillatory
- Fast

Alarms

- Up to 4 configurable alarms + loop break alarm

Communication and programming:

Interfaces

Communication on TTL port to:
- Universal programming key
- Remote display
- RS 485 serial interface
RS 485 port with ModBus RTU protocol (optional)

Programming/configuration tools:

- Configurable parameter level “Promotion”
- Configuration software available for PC

Installation

Mounting method: panel mount
Case dimensions: 78 x 35 mm, depth 75.5 mm

Connections

Communication port connection
5 Pole TTL Port
Connection
24 poles 2.5 mm² screw terminals block
Front protection: IP 65 (with gasket) according to EN 60070-1 for indoor use

Display and indicators

1 display line, 4 digit, h 12 mm, red colour
3 LED Bargraph

Connectable to:

- Programming key A01 for PC connection, backup and other functions
- SCADA for monitoring, traceability and remote management
- DX and DY gateways for remote monitoring

Notes

1 ) Digital Setpoint retransmission available only with RS485 port option or external adapter from TTL

UL Recognition Canada USA

File no. E362268
Ref. UL 61010-1 CSA 61010-1