Omron CJ1W-OC201 CJ Series 8-Point Relay Output Unit Independent Commons

Omron CJ1W-OC201 is an 8-point relay output unit for the SYSMAC CJ series PLC system. Screw terminal connection. Each of the 8 outputs operates on independent commons, allowing each point to switch different voltage potentials. The removable terminal block supports pre-wiring for reduced system downtime. The unit uses NY-24W-K-IE relays (Fujitsu Takamizawa Components, Ltd.). The relays are not user-replaceable. The unit occupies 1 word in the I/O table (16 bits are allocated, but only 8 bits are used for external I/O). Suitable for controlling motors, solenoids, contactors, valves, lighting systems, and alarm indicators in machine automation, packaging equipment, and material handling systems.

Applications:

• Motor control in industrial machinery and conveyors

• Actuation of solenoids, contactors, and valves in automation systems

• Lighting control in industrial facilities

• Alarm and indicator triggering for system status monitoring

• Signal isolation and switching of multiple voltage circuits in control panels

Core Specifications:

• Number of outputs: 8 (normally open relay contacts)

• Output type: Relay

• Independent commons per output: Yes (8 independent contacts)

• Permitted voltage at output: 5‑250 V AC, 5‑24 V DC

• Output current: 2 A per point (16 A total per unit)

• Maximum switching capacity: 2 A 250 V AC (cosφ = 1), 2 A 250 V AC (cosφ = 0.4), 2 A 24 V DC

• Minimum switching capacity: 1 mA 5 V DC

• ON response time: 15 ms max.

• OFF response time: 15 ms max.

• Operating temperature: 0°C … 55°C

• Storage temperature: –20°C … +75°C

Advanced Specifications:

• Relays: NY-24W-K-IE (Fujitsu Takamizawa Components, Ltd.), cannot be replaced

• Electrical life: 150,000 operations (24 V DC, resistive load); 100,000 operations (240 V AC, cosφ = 0.4, inductive load)

• Mechanical life: 20,000,000 operations

• Insulation resistance: 20 MΩ between external terminals and GR terminal (500 V DC)

• Dielectric strength: 2,000 V AC between external terminals and GR terminal for 1 min at leakage current ≤ 10 mA

• Internal current consumption: 90 mA max. at 5 V DC; 48 mA max. at 24 V DC (6 mA × number of ON points)

• I/O word allocation: 1 word (16 bits, 8 bits used for external I/O)

• Circuit configuration: Output indicator LEDs, terminal signals OUT0 to OUT7, NC unused

• External connection: Removable screw terminal block

• Certification: CE, cULus, NK, Lloyd

Physical Specifications:

• Dimensions (H × W × D): 90 mm × 31 mm × 85 mm

• Weight: 140 g max.

• Mounting: DIN rail (35 mm)

• Protection rating: IP20

System Integration:

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

• Installs on CPU rack or expansion rack via CJ I/O bus.

• Works with CJ1, CJ2, and NJ series CPU units.

• The unit is treated as a 16-point I/O unit in the I/O tables (although only 8 points are available for external I/O).

• External connection and terminal‑device variable diagrams use terminal numbers A0 to A8 and B0 to B8. These numbers are used in manuals but are not printed on the unit.

• The input power supply polarity can be connected in either direction.

Related Products:

• CJ1W-OC211 – 16-point relay output unit (16 points / 1 common)

• CJ1W-OD211 – 16-point transistor output unit, sinking, 0.5 A

• CJ1W-ID211 – 16-point DC input unit

• CJ1W-PA205R – Power supply unit, 100‑240 V AC, 25 W, with RUN output