For demanding thermal process control in industrial automation, the Omron CJ1W-TC001, CJ1W-TC002, CJ1W-TC003, and CJ1W-TC004 Temperature Control Units deliver precise, reliable loop regulation directly within the CJ-series PLC backplane. These modules support a wide range of thermocouple types and offer flexible output configurations — NPN or PNP — to interface with solid-state relays, contactors, or DC-driven actuators. The CJ1W-TC003 and CJ1W-TC004 add a dedicated heater burnout detection function, enabling early warning of heating element failure to prevent product loss or downtime. With fast sampling cycles and compact form factor, these units are ideal for plastic injection molding, packaging, heat-treating ovens, and multi-zone temperature control systems.
| Model |
Control Loops |
Input Type |
Output Type |
Heater Burnout Detection |
| CJ1W-TC001 |
4 loops |
Thermocouple (B, J, K, L, R, S, T, etc.) |
NPN (sink) |
No |
| CJ1W-TC002 |
4 loops |
Thermocouple |
PNP (source) |
No |
| CJ1W-TC003 |
2 loops |
Thermocouple |
NPN (sink) |
Yes |
| CJ1W-TC004 |
2 loops |
Thermocouple |
PNP (source) |
Yes |
- Thermocouple Compatibility: Supports B, E, J, K, L, N, R, S, T, U, WRe5-26, and PLII types with cold-junction compensation.
- Control Modes: Standard PID (with auto-tuning), ON/OFF, and heating/cooling dual-output control.
- Sampling Cycle: 500 ms per loop (configurable) for stable, responsive regulation.
- Output Rating: Each NPN/PNP output is rated for 24 VDC / 50 mA (max.) — suitable for direct drive of intermediate relays or SSR gate inputs.
- Heater Burnout Detection (TC003/TC004): Monitors current via an external CT (current transformer) and triggers an alarm when current falls below a set threshold.
- Isolation: 1000 VAC between input/output and PLC backplane; 500 VAC between channels.
- Dimensions: 31 x 90 x 65 mm (W x H x D) — standard CJ-series single-slot form factor.
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22