Digital Controllers

Digital controllers (Temperature controllers)
CB103 / CB403 / CB903

  • Measurement accuracy: ±0.3% of displayed value
  • Sampling time: 0.5 sec.
  • Analog output and external contact input are added to the CB series.
  • Plug-in construction
  • Temperature
  • Main features
  • Main specification
  • External dimensions
  • Models

Main features

Analog output and external contact input are added to the CB series

Analog outputs and digital inputs are available.

Control state discriminating type self-tuning

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

Autotuning function is also available.

Close mounting is available

Close mounting has been realized to efficiently utilize the panel space.

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.
  • Output (OUT1)
    1) Relay contact output : 1a contact
    2) Voltage pulse output for SSR driving: 0/12V dc
    3) Current output : 4 to 20mA dc
    4) Triac trigger output: Trigger method – Zero cross method


  • Alarm outputs (max.2 points): Temperature alarm, Heater break alarm, and Control loop break alarm
  • Auxiliary outputs: Temperature alarm output, Relay contact output
    Analog output: 0 to 20mA dc, 4 to 20mA dc
    ※Output type can be selected from PV, SV, deviation, or MV
  • External contact input: RUN/STOP switching or SV1/SV2 switching
  • CT input for Heater break alarm (max. 1 point)


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

CB103 Approx.170g

CB403 Approx.250g

CB903 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