The Omron CJ1W-OD261, also cataloged as the CJ1W-OD261 Transistor Output Unit, operates as a dedicated hardware component for high-density discrete switching and load actuation within CJ Series PLC systems.

Technical Identifier Matrix

Hardware Specifications

I/O Density Scaling and Backplane Bus Velocity

The Omron CJ1W-OD261 expands channel availability by packing 64 sinking transistor outputs across dual 40-pin connectors into a single slot footprint. High-density I/O density scaling optimizes enclosure panel layout while minimizing internal rack width requirements. The module offloads signal conditioning hardware directly to internal drivers, allowing backplane bus velocity to maintain cycle execution speeds without transmission delay or signal degradation. Deterministic update synchronization across the internal bus structure maintains precise signal timing across all 64 output channels during parallel operation.

Package Contents & Ordering Information

• 1x Omron CJ1W-OD261 Transistor Output Unit

• 2x 40-pin Connector Dust Covers

• 1x CJ1W-OD261 Hardware Datasheet and Manual

Field Installation Guidelines

• Mounting: Secure module into the dedicated CJ Series I/O rack slot using the top and bottom locking mechanism levers until fully latched into the backplane.

• Connector Wiring: Terminate field wiring using dual 40-pin MIL connectors or pre-wired connector cables routed directly to terminal conversion blocks.

• External Power Supply Connection: Wire external 12 to 24 VDC load power supply lines to dedicated power terminals on the connector pins to drive sinking transistor outputs.

• Shielding & Grounding: Route DC output signal lines in isolated cable channels away from high-voltage AC conductors. Connect shield braids to functional earth ground using 360-deg braid shielding clamp interfaces.

Frequently Asked Questions

• What is the switching polarity for the digital outputs on the CJ1W-OD261?

  The digital outputs operate on NPN logic, providing current sinking execution for connected field loads.

• What is the maximum current load permitted per output point?

  Each output channel supports a maximum load current of 0.3 A at operating voltages between 10.2 and 26.4 VDC.

• How are field wiring connections physically interfaced to the unit?

  Field signals interface via dual front-mounted 40-pin MIL connectors requiring compatible pre-assembled cables or terminal blocks.

• What is the internal backplane current draw for this module?

  The module draws 0.17 A at 5 VDC directly from the internal CJ Series backplane bus logic supply.

• Are output points isolated from the internal logic circuits?

  Yes, photocoupler isolation isolates the 64 output channels from internal CPU backplane communication paths.

• Is hot-swapping allowed for the CJ1W-OD261 during active PLC execution?

  No, powering down the CPU system rack is mandatory before inserting or removing the I/O module from the backplane.

• What response time is rated for output state activation?

  ON response time executes within 0.1 ms max, and OFF response time completes within 0.8 ms max.

• How are output states visually displayed on the module front panel?

  An integrated LED indicator block displays real-time ON/OFF status for output points using selectable bank switches.