Omron CJ1W-ID231 CJ Series 32‑Point DC Input Unit

Omron CJ1W‑ID231 is a 32‑point DC input unit for SYSMAC CJ series PLC systems. Fujitsu connector type (FCN40), 20 mm width. PNP/NPN polarity‑configurable to adapt to both sourcing and sinking field devices without hardware changes. Configurable digital filter (0 ms to 32 ms) reduces the influence of external noise. DIN rail mounting.

Applications:

• High‑density digital input expansion for CJ‑series PLC systems

• Conveyor and material handling I/O acquisition

• Packaging machinery and assembly line sensor monitoring

• Factory automation distributed I/O stations

Core Specifications:

• Number of inputs: 32 (16 points/common, 2 circuits)

• Input voltage: 24 V DC (permitted range 20.4‑26.4 V)

• Input impedance: 5.6 kΩ

• Typical input current: 4.1 mA (24 V DC)

• ON voltage: ≥ 19.0 V DC at ≥ 3 mA min.

• OFF voltage: ≤ 5 V DC at ≤ 1 mA max.

• I/O connection type: Fujitsu connector (FCN40, 40‑pin, plug not included)

• Word allocation: 2 words (32 points)

• Number of I/O connectors: 1

• Number of COM terminals: 4

Performance Specifications:

• ON/OFF response time: 8.0 ms max. (selectable 0 ms to 32 ms in Unit Information settings)

• Simultaneously ON points: 75% (12 points/common) at 24 V DC

• Insulation resistance: 20 MΩ min. between external terminals and GR terminal (100 V DC)

• Dielectric strength: 1,000 V AC for 1 min between external terminals and GR terminal (leakage current ≤ 10 mA)

Physical & Environmental Specifications:

• Internal current consumption (5 V DC): 90 mA max.

• Dimensions (W × H × D): 20 mm × 90 mm × 66.5 mm

• Weight: approx. 64 g

• Protection rating: IP20

• Operating temperature: 0 °C … 55 °C

• Storage temperature: –20 °C … +75 °C

• Certifications: CE, cULus, NK, Lloyd

System Integration:

• This input unit belongs to the Omron SYSMAC CJ series.

• Installs on CPU Rack or Expansion Rack via CJ I/O Bus.

• Compatible with CJ1, CJ2, CS1, NJ, CP1H, and CP1L CPU units.

• Both COM0 and COM1 have two pins each (A9/A18 for COM0, B9/B18 for COM1). All must be wired; COM0 and COM1 are not connected internally.

• The input power polarity can be connected in either direction, provided the same polarity is used for the commons for rows A and B.

Related Products:

• XW2Z‑050B – Connecting cable, Fujitsu connector to XW2D terminal block, 0.5 m

• XW2Z‑100B – Connecting cable, Fujitsu connector to XW2D terminal block, 1 m

• XW2Z‑200B – Connecting cable, Fujitsu connector to XW2D terminal block, 2 m

• XW2Z‑500B – Connecting cable, Fujitsu connector to XW2D terminal block, 5 m

• CJ1W‑ID232 – 32‑point DC input unit, MIL connector version

• CJ1W‑OD231 – 32‑point PNP transistor output unit (Fujitsu connector)