The Omron CJ1W-TC101, also cataloged as the CJ1W-TC101 Temperature Control Unit, operates as a dedicated hardware component for direct RTD sensor interface and multi-loop thermal regulation within CJ1 Series PLC platforms.

Technical Identifier Matrix

• Brand: Omron
• Base Model: CJ1W-TC101
• Full Part Number: CJ1W-TC101
• Series Name: CJ1 Series
• Unit Category: CJ1 Special I/O Unit
• Input Sensor Compatibility: Platinum Resistance Thermometer (Pt100 / JPt100)

Hardware Specifications

PLC Controller Processing & Backplane Communication

The CJ1W-TC101 interfaces directly with the CJ1 CPU backplane bus, consolidating four independent temperature control loops into a single Special I/O module location. Internal microprocessors execute PID algorithms with 2 degrees of freedom to decouple disturbance rejection from setpoint tracking dynamics. Direct analog conversion of 3-wire Pt100/JPt100 resistance values occurs onboard before transferring processed temperature data over the backplane, scaling I/O bus throughput without taxing main CPU execution cycles. Output signals are driven directly via open-collector switching stages for rapid thermal loop feedback execution.

Package Contents & Ordering Information

• 1x Omron CJ1W-TC101 Temperature Control Unit
• 1x Removable Screw Terminal Block

Field Installation Guidelines

• Mounting: Secure the unit onto the CJ1 CPU rack or expansion backplane using the integral upper and lower locking sliders.
• Wiring: Connect 3-wire platinum resistance thermometers to the front terminal block using equal-length, low-resistance copper conductors.
• Shielding: Encase RTD lead wires in continuous 360-deg braid shielding and ground at the panel functional earth bar only.
• Grounding: Bond the CJ1 backplane mounting frame to functional earth (FE) via a dedicated low-impedance copper busbar.

Frequently Asked Questions

• What sensor types are supported by the CJ1W-TC101 module inputs?

  The module directly measures temperature using platinum resistance thermometers, specifically standard Pt100 and JPt100 RTD elements.

• How many independent control loops can a single CJ1W-TC101 manage?

  A single module incorporates 4 separate control channels, functioning as 4 standalone temperature controllers.

• What control algorithm is executed onboard the CJ1W-TC101?

  The internal control engine processes a PID algorithm equipped with 2 degrees of freedom for optimal loop control.

• What hardware output stage is provided for actuator control?

  The module provides open-collector solid-state outputs suitable for switching external relays or solid-state relays (SSRs).

• What physical dimensions apply to the CJ1W-TC101 unit chassis?

  The unit physical dimensions measure exactly 3.1 cm x 9.0 cm x 6.5 cm with a module net weight of 0.25 kg.

• Is an external analog input conversion module required for RTD connection?

  No, the unit provides direct direct-input terminal connection for platinum resistance thermometer sensors.

• How is field wiring cable noise mitigated on RTD input lines?

  Input wiring requires shielded 3-wire connections with 360-deg braid shielding terminated directly at the panel FE ground.

• Does the CJ1W-TC101 require external power for internal logic processing?

  Internal logic and processing power are drawn directly from the CJ1 PLC backplane bus, consuming 1.25 W nominal.