Omron CJ1W-PA205C SYSMAC CJ Series Power Supply Unit

Description

The Omron CJ1W-PA205C is an in-panel modular Power Supply Unit designed specifically for the SYSMAC CJ series PLC platform. Its primary purpose is to convert an alternating current input into regulated direct current power, providing a stable energy foundation for the CPU unit and adjacent expansion I/O modules across the internal backplane chassis. This module functions with an integrated maintenance forecast monitor, allowing early observation of hardware degradation to protect system operation against unexpected power failure. The unit accepts a wide range AC input and outputs a total electrical capacity of 25 W distributed across internal 5V DC and 24V DC lines, alongside an open collector alarm output for external diagnostic integration. It is engineered for industrial control panels across diverse plant automation systems and interfaces directly with all standard components matching the SYSMAC CJ series architecture.

Features

• Dedicated system power module engineered for the Omron SYSMAC CJ series backplane.
• Integrated maintenance forecast monitor providing proactive asset tracking capabilities.
• Wide range alternating current input capability supporting global plant voltages.
• Dual DC voltage power outputs providing 5V DC and 24V DC rails simultaneously.
• Dedicated open collector alarm output contact for external hardware fault monitoring.
• Designed as a secure open-type, in-panel device optimized for industrial control enclosure mounting.

Applications

• Factory automation control panels.
• Machinery processing and manufacturing line racks.
• Centralized assembly systems.
• Distributed industrial infrastructure control nodes.

Technical Specifications

Power Requirements

Output Specifications

Mechanical

Environmental

Installation Guidelines

• Mounting Orientation: This product must be installed in a vertical orientation only. Vertical installation ensures correct ventilation alignment inside the panel.
• Enclosure Requirements: The device is defined as an open-type, in-panel component. It must be placed within a control panel certified as Enclosure Type 1 or greater, accessible only via a tool or key.
• Field Wiring Rules: Use copper conductors only for all connected field terminals. Do not utilize crimp terminals for field wiring connections.
• Terminal Multi-Wire Restriction: Do not insert more than a single wire into any one individual wiring terminal.
• Tightening Torque: Secure the field wiring screw terminals using a calibrated torque rating of 7 Lb In (0.8 Nm).
• Conductor Wire Gauge: For field power wiring, use AWG 20 to 14 Solid/Stranded wire. For the alarm output terminals, employ AWG 28 to 18 Solid/Stranded wires with a stripped insulation length of 7-10 mm.
• Cable Temperature Rating: Select power supply terminal cables that possess an official rated temperature specification of 80ºC or higher.
• Maintenance Cleansing: Never use paint thinner, solvent-based solutions, or harsh chemicals to clean the outer housing. Use a clean, dry cloth only.

Compliance and Certifications

• UL / CSA Standards
• Class I Division 2 Hazardous Location (Groups A, B, C, D)

FAQ

What is the primary function of the CJ1W-PA205C?

It is an AC-powered module engineered to feed stable internal 5V DC and 24V DC electrical current to a SYSMAC CJ series PLC rack.

What does the maintenance forecast monitor do on this unit?

It tracks the runtime status and aging profile of the power circuitry, providing early forecast indicators to prevent unexpected system shutdowns.

What is the allowable AC input voltage range?

The unit has a rated input of 100-240 V ac, with an operational input range spanning 85% to 110% (85-264 V).

What are the maximum current limits for the DC power outputs?

The 5V DC rail provides up to 5 A max, while the 24V DC rail provides up to 1 A max, totaling a 25 W output capacity.

Can this unit be mounted horizontally on a DIN rail?

No, the installation configuration dictates that the power unit must be mounted vertically only.

Is this device safe for installation in residential zones?

No, this equipment is an industrial device and is not intended for use in residential environments due to potential radio interference risks.

What kind of wire termination is forbidden for field connections

Do not use crimp terminals for field wiring terminals on the block.

What tightening torque should be applied to the terminal screws?

The terminal block screws must be torqued precisely to 7 Lb In (0.8 Nm).

Can I insert two separate power loops into one terminal slot?

No, the guidelines state that you must not insert more than one wire in one single terminal.

What type of protection fuse is required upstream for the supply circuit?

Use a 30 A maximum, 250 Vac minimum Branch Circuit Cartridge-type fuse to protect the incoming supply circuit.

What are the electrical parameters of the integrated alarm output?

The alarm output is an open collector type with a maximum electrical rating of 30V dc and 50 mA.

Can this power supply operate at high-altitude mountain stations?

Yes, but it is limited to an operating altitude of a maximum of 2,000 meters above sea level.