Configured for 100 to 120 VAC digital signal acquisition in CJ1 PLC systems, the Omron CJ1W-IA111 (CJ1W AC Input Unit) provides direct physical execution of field-level AC state sensing and internal logic memory mapping.

Hardware Nomenclature & Model Matrix

• CJ1W: CJ Series I/O module system platform designator.
• IA: Alternating Current (AC) digital input circuit interface.
• 111: 16-point input density configuration with 100 to 120 VAC operational rating.

Electrical & Physical Specifications

Backplane Synchronization & Firmware Compatibility

The module communicates across the internal CJ-series system backplane bus to transfer digital status bits directly to the CPU unit memory. High-speed backplane interface logic maintains deterministic scan timing while ensuring cross-generation firmware flash compatibility for seamless system expansion without timing jitter.

Kit Packaging Content

• 1 x Omron CJ1W-IA111 AC input module unit
• 1 x Removable 18-point wiring terminal block

Wiring & Physical Cabinet Guidelines

• Terminal Installation

  Secure field cables to the removable terminal block before attaching it to the front connector frame to avoid applying mechanical strain to internal PCB traces.

• Line Isolation

  Separate 100 VAC input signal wiring from low-voltage DC communication cables inside panel wire ducts to mitigate inductive noise coupling.

• Frame Grounding

  Ensure the CJ-series CPU and backplane base units bond directly to a copper functional earth bus bar via low-impedance grounding conductors.

Technical FAQ

• What is the input voltage rating for the CJ1W-IA111 module?

  The module accepts 100 to 120 VAC operating input levels at 50/60 Hz frequency ranges.

• How many CPU memory words does this input unit occupy?

  The module allocates exactly 1 word (16 bits) within the primary CPU I/O memory table.

• Is hot-swapping supported for the CJ1W-IA111 on a running backplane?

  No, removing or inserting the module while the PLC backplane is energized damages internal backplane bus drivers.

• How many commons are shared across the 16 input points?

  All 16 digital input points connect to a single shared common terminal on the front block.

• What is the current draw from the internal 5 VDC logic bus?

  The internal circuit draws a maximum current of 0.09 A (90 mA) from the 5 VDC system power supply.

• Can AC input signals be mixed with DC voltage sources on this unit?

  No, input circuitry is designed strictly for 100 to 120 VAC signals; applying DC voltage will prevent correct state detection.

• What type of field wiring connector is integrated onto the housing?

  The front interface utilizes a removable 18-point screw terminal block for field wiring connections.

• What ambient temperature conditions are required for normal operation?

  Operating environments must maintain non-condensing relative humidity within an ambient range of 0 deg C to 55 deg C.