The Omron CJ1W-SP001, also cataloged as the CJ1W-SP001 Space Unit, operates as a dedicated hardware component for physical rack slot reservation and backplane bus continuity protection within CJ1 Series PLC platforms.

Technical Identifier Matrix

• Brand: Omron
• Base Model: CJ1W-SP001
• Full Part Number: CJ1W-SP001
• Series Name: CJ1 Series
• Unit Category: Blank Rack Filler / Dummy Module
• I/O Memory Allocation: 0 Words

Hardware Specifications

PLC Controller Processing & Backplane Communication

Configured to maintain physical layout continuity without altering CPU memory allocation, the CJ1W-SP001 routes backplane logic control and power lines directly across unused chassis slots. The internal passive printed circuit board ensures uninterrupted backplane bus velocity, maintaining deterministic communication between active I/O modules on the rack. The dummy structure prevents backplane bus open-circuit faults, shields internal rack pin connectors from airborne conductive particulates, and preserves I/O density scaling profiles for future active expansion modules.

Package Contents & Ordering Information

• 1x Omron CJ1W-SP001 Space Unit
• 1x Backplane Bus Connector Cover

Field Installation Guidelines

• Mounting: Slide the module directly into any unassigned CJ1 CPU or expansion rack slot, locking the top and bottom slider latches into place.
• Wiring: No field terminal connections are present; ensure adjacent active I/O field wiring harnesses do not foul the dummy faceplate.
• Shielding: Maintain standard cabinet enclosure shielding to isolate adjacent functional modules from external electromagnetic interference.
• Grounding: Frame grounding is maintained through the backplane mechanical ground pins connected directly to the CPU rack functional earth (FE) rail.

Frequently Asked Questions

• Does the CJ1W-SP001 consume any I/O memory words in the CJ1 CPU?

  No, the CJ1W-SP001 is a passive dummy module and allocates 0 words in the PLC I/O memory table.

• What is the primary function of the CJ1W-SP001 Space Unit?

  It reserves physical rack space for future I/O expansion while protecting backplane connectors from dust and maintaining bus continuity.

• Does the CJ1W-SP001 draw current from the 5 VDC backplane bus?

  No, the internal circuitry is completely passive and draws 0.0 A from the 5 VDC and 24 VDC backplane supply lines.

• What physical dimensions apply to the CJ1W-SP001 module?

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

• Can the CJ1W-SP001 be installed on CJ1 expansion racks?

  Yes, the unit can be mounted in any open slot on both CJ1 CPU main racks and CJ1 expansion racks.

• Does the module require any firmware or software configuration in Sysmac Studio or CX-Programmer?

  No, the unit is purely mechanical and electrical pass-through, requiring zero software configuration or firmware definitions.

• What field wiring terminals are available on the front panel of the unit?

  The CJ1W-SP001 contains no field I/O terminals, connectors, or user-accessible jumpers.

• What ambient temperature range is certified for the CJ1W-SP001 chassis?

  The passive module operates reliably within an ambient operating temperature range of 0 deg C ... +55 deg C.