Digital Controllers

Digital Controllers (Temperature Controllers)
CB Series(CB100 / CB400 / CB500 / CB700 / CB900)

  • Measurement accuracy: ±0.3% of displayed value
  • Sampling time: 0.5 sec.
  • Longtime seller of Temperature Controllers
  • Plug-in construction
  • Temperature
  • Main features
  • Main specification
  • External dimensions
  • Models

Main features

Control state discriminating type self-tuning

PID parameters are automatically tuned when control is determined to be disturbed

Autotuning function is also available.

Closely contacted mounting is available

Closely contacted mounting has been realized to efficiently utilize the panel space.

Communication function (RS-485) is available (Optional)

Up to 31 controllers can be multidrop connected over the RS-485 communication line.

Communication protocol can be selected from RKC standard or MODBUS protocol.

Main specification

  • Number of Inputs :1 point
  • Input type : ※See the Input Range Code for the input range.

1)Thermocouple : K, J, T, S, R, E, B, N, W5Re/W26Re, U, L, PLII

2)RTD: Pt100 or JPt100

3)DC voltage: 0 to 5V dc, 1 to 5V dc

4)DC current: 0 to 20mA dc, 4 to 20mA dc ※ A 250Ω external resistor is required.

  • Sampling time: 0.5 sec.
  • Measurement accuracy:±(0.3% of displayed value+1 digit) ※Depends on the input and the range.
  • Outputs (OUT1)

1) Relay contact output : 1a contact

2) Voltage pulse output for SSR driving: 0/12V dc

3) DC Current output : 0 to 20mA, 4 to 20mA dc

4) Triac trigger output: Trigger method – Zero cross method


  • Output 2 (OUT2)  ※Cooling output for heat/cool control

1) Relay contact output : 1a contact

2) Voltage pulse output for SSR driving: 0/12V dc

3) DC Current output : 4 to 20mA dc

  • Alarm outputs (max.2 points): Temperature alarm, Heater break alarm, and Control loop break alarm
  • CT input for Heater break alarm (max. 1 point)
  • Communication function: Communication interface RS-485


  • Power supply voltage (Rating): 100 to 240Vac/24Vac/24Vdc
  • Ambient temperature: 0 to 50°C
  • Weight:

CB100 Approx. 170g

CB400 Approx. 250g

CB500 Approx. 250g

CB700 Approx. 290g

CB900 Approx. 340g

  • Safety standards: UL UL61010-1

cUL CAN/CSA-22.2 NO.61010-1

CE Marking: Low Voltage Directive (LVD)EN61010-1

EMC Directive EN61326-1

External dimensions