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UN 231-8PD22-0XA0/UN 231-8PH22-0XA0

4TC & 8TC PID products integrate advanced PID control algorithm, and integration for large lag, temperature and temperature in the mutual interference temperature reaches the set temperature simultaneously. For low speed, large delay temperature control field optimization PID control algorithm to solve the problem of slow temperature control, heating speed and temperature overshoot.

·4/8 channel thermocouple temperature measurement, 16-bit resolution.

·Signal optocoupler isolation, stable performance, easy to use power isolation protection.

·Integrated advanced PID temperature control algorithm, multi-temperature zone temperature control.     Dramatically reduce equipment commissioning time.

· Applicable temperature range: room temperature ~ 500 ° C (depending on the environment and different).

· Heating overshoot ≤3 ° C, steady state error ≤1 ° C (varies depending on environment).

· Targeted industries include extrusion, injection molding, large-scale textile machinery and other multi-temperature control industries.

Model No.

UN 231 4TC-PID

UN 231 8TC-PID

Order No.

UN 231-8PD22-0XA0

UN 231-8PH22-0XA0

  Side View

  technical parameters


Model UN 231 4TC-PID UN 231 8TC-PID
Order number UN 231-8PD22-0XA0 UN 231-8PH22-0XA0
Dimension(WxHxD) 71.2x80x62mm
Power consume



Power characteristics
From bus current consumption 87mA 107mA
From L+ current consumption 60mA
Voltage range 20.4~28.8V DC
Optical isolation(field to logic) >500V
Analog input characteristics
Analog input 4 8
Type Floating thermocouple
Common mode rejection >12dB@120V AC
Lead length to the sensor(Max.) 100meter
Circuit loop resistance 100Ω
Noise suppression 85dB@ 50Hz/60Hz/400Hz
Input resistance ≥1MΩ
Inputvoltage(Max.) 30V DC
Module refresh cycle 290ms 580ms
Data word format Temperature data format:Actual temperature x10
Input range TC type:J、K
Measuring principle Sigma→Delta

Voltage:15+1Sign bit


Basic error 0.1%FS
Repeatability 0.05%FS
Cold-side error ±1.5℃
Address range VW
PID characteristics
PID algorithm PID parameters self-tuning, temperature linkage
Sampling time 1second
PID output type Analog or PWM pulse width control
PID output polarity Bipolar or unipolar


  Wiring diagram

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