The Omron CJ1W-AD081-V1, also cataloged as the CJ1W-AD081-V1 Analog Input Unit, operates as a dedicated hardware component for multi-channel analog signal acquisition within SYSMAC CJ Series platforms.

Technical Identifier Matrix

• Brand: Omron
• Base Model: CJ1W-AD081-V1
• Full Part Number: CJ1W-AD081-V1
• Series Name: SYSMAC CJ Series
• Product Type: Analog Input Unit (8 Inputs)
• Unit Classification: CJ-series Special I/O Unit

Hardware Specifications

PLC Controller Processing & Backplane Communication

The CJ1W-AD081-V1 converts incoming physical signals into digital registers transferred across the internal backplane bus velocity pipeline to the CPU memory mapping. High-density I/O density scaling integrates 8 discrete analog channels into a single-slot footprint while allocating 1 Special I/O Unit number. Resolution modes of 1/4,000 and 1/8,000 correlate directly with conversion periods of 1 ms/point and 250 us/point, maintaining Profinet/EtherNet/IP determinism across wider network architectures and preserving firmware flash compatibility across all SYSMAC CJ PLC racks.

Package Contents & Ordering Information

• 1x Omron CJ1W-AD081-V1 Analog Input Unit
• 1x Removable Terminal Block Assembly

Field Installation Guidelines

• Mounting: Mount the module onto the CJ-series backplane rack, aligning the bus connector pins, and secure top and bottom DIN-rail locking tabs.
• Wiring: Connect field sensor lines directly to the removable terminal block terminals, configuring jumper wiring per channel for current vs. voltage operational modes.
• Shielding: Enclose low-level signal lines inside twisted-pair conductors using 360-deg braid shielding anchored to the local enclosure grounding bus.
• Grounding: Connect a direct copper grounding braid from the PLC rack functional earth (FE) terminal to the central enclosure earth grid.

Frequently Asked Questions

• What input signal ranges can be configured on the CJ1W-AD081-V1?

  The module supports 1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to 10 V, and 4 to 20 mA ranges, which can be selected separately per input channel.

• How are resolution settings tied to conversion speed on this module?

  Resolution and speed cannot be set independently; selecting a 1/4,000 resolution configuration locks the conversion period to 1 ms/point.

• What current consumption is drawn from the 5 VDC system backplane?

  The CJ1W-AD081-V1 draws 0.42 A at 5 VDC (2.10 W total power consumption) directly from the PLC backplane power supply.

• How many Unit Numbers are consumed by the CJ1W-AD081-V1 on the CPU rack?

  The module allocates exactly 1 Special I/O Unit number within the PLC CPU memory allocation map.

• What physical dimensions apply to the CJ1W-AD081-V1 hardware casing?

  The physical dimensions of the module housing measure 3.1 cm x 9.0 cm x 6.5 cm with a net weight of 0.14 kg.

• Is hot-swapping supported for the CJ1W-AD081-V1 module?

  No, power to the CJ-series rack must be switched OFF prior to removing or inserting the module into the backplane bus slot.

• What is the conversion speed when configured for 250 us per point?

  Setting the module to high-speed mode yields a 250 us/point conversion period corresponding to the high-resolution setting.

• What field connection hardware is integrated into the front interface?

  The module utilizes a removable terminal block to allow pre-wiring and rapid field unit replacement without disconnecting individual conductors.