Configured for high-density discrete load switching in SYSMAC CJ1 Series platforms, the Omron CJ1W-OD234 (CJ1W-OD234 Transistor Output Unit) provides direct physical/electrical execution.

Technical Identifier Matrix

• Brand: Omron
• Base Model: CJ1W-OD234
• Full Part Number: CJ1W-OD234
• Series Name: SYSMAC CJ1 Series
• Product Type: Transistor Output Unit (32 Points, Sinking)
• Host System: SYSMAC CJ1 Series PLC

Hardware Specifications

PLC Controller Processing & Backplane Communication

The CJ1W-OD234 interface operates across the internal backplane bus velocity framework of the SYSMAC CJ1 chassis to deliver rapid bit-state transfers from CPU memory to field actuators. Solid-state output driver arrays execute switching cycles with high-speed response parameters (ON time of 15 us max., OFF time of 80 us max.), supporting high-density I/O density scaling across a dual 16-point common layout. The module isolates internal 5 VDC logic processing from external 24 VDC load loops, maintaining deterministic update execution without inducing voltage noise or backplane processor latency.

Package Contents & Ordering Information

• 1x Omron CJ1W-OD234 Transistor Output Unit
• 1x MIL Connector Cover Shell

Field Installation Guidelines

• Mounting: Seat the unit into the assigned slot on the CJ1 CPU or expansion rack and slide the upper and lower locking levers until locked to the DIN rail.
• Wiring: Terminate field wiring using compatible 40-pin MIL connector wiring harnesses, connecting sinking load return lines to negative common rails.
• Shielding: Route external 24 VDC power and discrete output wiring through grounded metal conduit isolated from high-voltage AC conductors.
• Grounding: Connect the PLC rack functional earth (FE) rail and enclosure ground bus to system earth via a low-impedance copper strap.

Frequently Asked Questions

• What output switching logic type is utilized by the CJ1W-OD234?

  The CJ1W-OD234 utilizes NPN sinking output logic across 32 points organized into 2 isolated circuits of 16 points per common.

• What are the maximum continuous load current limits for the module?

  Current output limits are 0.5 A per point, 2 A per common group, and 4 A maximum for the entire output unit.

• Does the CJ1W-OD234 contain internal fuse protection for output points?

  No, the CJ1W-OD234 does not contain internal fuses; external short-circuit protection devices must be installed on field wiring loops.

• What is the external power supply requirement for driver operation?

  An external supply operating from 20.4 to 26.4 VDC with a minimum current rating of 110 mA is required for output drive circuits.

• What physical dimensions apply to the CJ1W-OD234 hardware?

  The module physical dimensions measure 3.1 cm x 9.0 cm x 6.5 cm with a maximum module weight of 0.07 kg.

• What are the physical ON and OFF response speeds of the transistor outputs?

  The module features high-speed output response times, with an ON delay of 15 us max. and an OFF delay of 80 us max.

• What dielectric isolation level exists between external terminals and ground?

  Dielectric strength is rated at 1,000 VAC for 1 minute between external field terminals and the GR (ground) terminal.

• What connector style is integrated on the front panel of the unit?

  Field wiring interfaces directly to the front panel using a standard multi-point MIL connector interface.