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Universal Ramp and Soak PID Controller with Autotune and Alarms

Universal Temperature Process Controller

Item# CN142-R1-DC2-C4

Universal Temperature Process Controller CN142-R1-DC2-C4 CN142-R1-DC2-C4
  • This product series is no longer available. For possible alternates please see CN38S Series or CN401-11445-C4 or CN4000-Series. An exact replacement will be introduced in Q1 2021.

  • Dual Display
  • J K R S Thermocouple Inputs
  • Process Inputs
  • RTD and Thermistor Inputs
  • 3 Outputs
  • Alarm Event and Timer Functions
  • On/Off or PID Control
  • 3 Step Ramp Soak Feature
  • Autotune
  • Digital Input
  • Password Protection
  • 24 to 230 Vac/Vdc
  • Optional RS485
  • Optional Software with Configuration Module

Product Specs

Monitor and control temperature or process applications with precision using the CN142 Series controllers. The CN142 Series provides dual LED displays for local indication of process value and setpoint value. Control methods include on/off PID auto-tune and manual-tune. Controller includes a 3 setpoint ramp/soak control feature and also includes alarm event and timer functions with optional RS485 communications. An optional software package CN-SW-HW-KIT includes cable and configuration module for quick configuration of units as well as copying configuration parameters from one unit to another. The configuration module can also be purchased separately and with a built-in battery feature configuration settings can be downloaded and copied to the module without power applied to controller. The module can then be plugged into a new unit without power applied and the configuration setting can be transferred for easy set-up for multiple units.

Front Bezel: 32 x 74 mm (1.6 x 2.9')
Panel Depth: 53 mm (2.1')
Supply Voltage: 24 to 230 Vac/Vdc ±15% 50/60 Hz
Power Consumption: 2 W
Display: Two 4-digit 10 mm (0.4') green (SV) 8 mm (0.3') red (PV)
Accuracy: ±0.5°C temperature 0.2% reading
Resolution: 1°/0.1° 10 µV process
A/D Conversion: Sigma-delta
Reading Rate: Programmable
Digital Filter: Programmable
Operating Conditions:
    Temperature: 0 to 45°C (32 to 113°F)
    Humidity: 35 to 95 RH%
    Enclosure: Noryl UL94V1 self-extinguishing
    Front Panel: PC ABS UL94V0 self-extinguishing
Weight: 112 g (3.95 oz)
Front Panel: IP65 (with gasket) box IP30 terminal blocks IP20
    Thermocouple: J K R S
    RTD: Pt100 Pt500 Pt1000 Ni100
    Thermistor: PTC1K NTC10K (B 3435K) NTC 2252 O
    Process: 4 to 20 mA 0 to 10V 0 to 40 mV potentiometer 0 to 6/160 KO
Sampling Time: 4 1 ms (frequency 242 Hz)
1 Digital Input: ½ setpoint selection hold run (only for thermocouple 0 to 10V 0/4 to 20 mA 0 to 40 mV)
    2 Relays: 8 A to 250 Vac and 5 A to 250 Vac
    DC Pulse: 12 Vdc 30 mA
Serial Communication: RS485 Modbus ® RTU master/slave
Control Algorithms: On/off with hysteresis P PI PID PD time proportional
Tuning: Manual or autotune
Data Protection: Lock of command/ alarm setpoint; access to parameters by password
Alarm Modes: Absolute/threshold band high/low deviation; alarm with optional manual reset
Soft-Start: Rising gradient expressed as °C or °F/hour
Programmer Function: Start/stop 3 steps pre-programmed cycle
Timer Function: Controller function + single/double timer

Rated 5 out of 5 by from Works out of the box. Very versatile. After setting up the parameters correctly for my sensor and for dual mode operation, the auto tune drove the process right to set point and locked it there. No fuss.
Date published: 2016-11-20
Rated 5 out of 5 by from Easy Set-up, Great autotune feature! Great device! fast and easy. Tech support is always awesome at Omega.
Date published: 2016-07-22
Rated 5 out of 5 by from Low cost, good instructions Low cost, good instructions. Works right out of the box.
Date published: 2018-04-02
Rated 5 out of 5 by from Good little unit I have only bench tested the CN142 so far, but it is working well. I'm using it to control a pellet feeder and igniter on a BBQ smoker. I needed a replacement controller with a variable process period so that I could minimize temperature surges in the smoker. The igniter is controlled via the alarm relay and turns off once the smoker has come up to temperature.
Date published: 2017-11-20
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