Omron CJ1W-PA205R CJ Series Power Supply Unit 100-240V AC 25W with RUN Output

Omron CJ1W-PA205R is an AC power supply unit for the SYSMAC CJ series PLC system. It converts 100‑240 V AC input to stable 5 V DC and 24 V DC outputs for the CPU rack, delivering 25 W total output power. Equipped with a RUN output relay that closes when the CPU is in RUN or MONITOR mode, enabling external safety circuits such as emergency stop systems. Mounts to the left of the CPU unit.

Applications:

• Rack power supply for Omron SYSMAC CJ series PLCs

• Control cabinet power distribution in industrial automation

• Powering CPU, I/O, and special units in CJ1/CJ2 systems

• Safety circuits requiring RUN output monitoring

Core Specifications:

• Product type: AC power supply unit

• Input voltage: 100‑240 V AC, 50/60 Hz (permitted range 85‑264 V)

• Output power: 25 W total

• Output voltage: 5 V DC (backplane), 24 V DC (internal)

• Output current: 5 A at 5 V DC, 0.8 A at 24 V DC

• RUN output: Relay contact, ON (closed) when CPU is in RUN or MONITOR mode

• Mounting: DIN rail or panel mount

• Protection rating: IP20

• Dimensions (W × H × D): 80 mm × 90 mm × 81.6 mm

• Weight: approx. 0.35 – 0.37 kg

• Operating temperature: 0 °C … 55 °C

Advanced Specifications:

• Inrush current: ≤ 20 A at 100 V AC, ≤ 50 A at 240 V AC

• Hold-up time: 10 ms min.

• Protection: Overcurrent protection, overvoltage protection

• Dielectric strength: 1,000 V AC between primary and secondary for 1 min (leakage current ≤ 10 mA)

• Insulation resistance: 20 MΩ min. between primary and secondary at 100 V DC

• Noise immunity: 2 kV on power supply line (conforming to IEC61000-4-4)

• Vibration resistance: 10 … 57 Hz, 0.075 mm amplitude; 57 … 150 Hz, 9.8 m/s²

• Certifications: CE, cULus, NK, Lloyd, RoHS

System Integration:

• This power supply unit belongs to the Omron SYSMAC CJ series.

• Installs to the left of the CPU unit on the CPU rack (first slot).

• The RUN output relay closes when the CPU is in RUN or MONITOR mode, and can be used to create external safety circuits such as emergency stop systems that prevent an Output Unit’s external power supply from providing power unless the PLC is ON.

• Compatible with CJ1 and CJ2 series CPU units, I/O units and Special I/O Units.

Related Products:

• CJ1W‑PA202 – Power supply unit, 100‑240 V AC, 14 W (lower output)

• CJ1W‑PD025 – Power supply unit, 24 V DC, 25 W

• CJ2M‑CPU32 – CPU unit with built‑in EtherNet/IP

• CJ1W‑ID211 – 16‑point DC input unit

• CJ1W‑OD212 – 16‑point PNP transistor output unit

• CJ1W‑OC211 – 16‑point relay output unit