Product Core Brief

• Model: PW501
• Brand: YOKOGAWA
• Series: Yokogawa Industrial DIN-Rail Power Supply
• Core Function: Converts 85–264 V AC input into stable 24 V DC / 5 A output for control cabinets, DCS/PLC panels, and instrumentation power circuits.
• Product Type: DIN-Rail Power Supply Module
• Key Specs: 85–264 V AC input | 24 V DC / 5 A + 5 V DC / 3 A output | Power-fail relay contact | DIN-rail mount | CE / UL 61010-1 / RoHS compliant
• Condition: New Original / New Surplus
• Status: Limited availability; confirm output rating, revision, and application requirements before ordering

Key Technical Specifications

• Product type: Yokogawa industrial DIN-rail power supply module
• Model code:
• Input voltage: 85–264 V AC, 47–63 Hz
• Output: 24 V DC / 5 A + 5 V DC / 3 A, based on published listings
• Signal I/O: Power-fail relay contact (dry contact)
• Installation: 35 mm DIN rail with recommended clearance above the unit
• Dimensions: Approximately 120 × 100 × 125 mm; around 0.85 kg
• Operating temperature: -10°C to +60°C, with derating above 45°C
• Certifications: CE, UL 61010-1, RoHS 3, based on available listings
• Typical applications: DCS/PLC cabinet power, valve actuator supply, sensor power, control panel retrofit, and maintenance spares
• Handling: Verify nameplate output rating, input voltage range, revision, and load compatibility before installation

Note: The PW501 is commonly listed as a Yokogawa industrial DIN-rail power supply with 24 V DC / 5 A and 5 V DC / 3 A outputs. It is not confirmed as a CENTUM VP FCS rack power module like the PW482/PW484 series. Exact revision, output tolerance, and certification details should be verified from the module nameplate or Yokogawa documentation.

 

Product Introduction

The PW501 is a Yokogawa industrial power supply module designed to provide stable DC power for control cabinets, DCS/PLC panels, and instrumentation circuits. It accepts a wide AC input range of 85–264 V AC and delivers regulated 24 V DC / 5 A output, with an additional 5 V DC / 3 A output according to published listings.

Unlike the PW482/PW484 family, which is designed for CENTUM VP Field Control Station racks, the PW501 is typically used as a DIN-rail mounted cabinet power supply. It is suitable for applications where control systems, I/O modules, relays, sensors, or small actuators require reliable 24 V DC power.

For procurement and maintenance teams, the PW501 is mainly used as a replacement or spare power supply in existing Yokogawa or third-party control panels. Because output rating, revision, and certification requirements vary by project, confirming the nameplate before ordering is essential.

 

QA & Inspection SOP

Each unit is inspected before release:

1. Nameplate verification: Confirm model PW501 and record input/output ratings, revision, and serial information.
2. Visual inspection: Check housing, DIN-rail clip, terminals, and ventilation areas for damage.
3. Terminal check: Inspect AC input and DC output terminals for corrosion, looseness, or burn marks.
4. Insulation check: Verify no visible short circuits between input, output, and ground.
5. Power-on test: Apply rated AC input and confirm 24 V DC and 5 V DC outputs are within specification.
6. Signal check: Verify power-fail relay contact operation if applicable.
7. Load check: Confirm stable output under rated load and no abnormal heating.
8. Packaging: Protect terminals and connectors with anti-static packaging.

Full system validation requires installation in the intended control cabinet with verified load and wiring.

Installation Pitfalls & Guide

❗ Confirm output rating. The PW501 is commonly listed with 24 V DC / 5 A and 5 V DC / 3 A outputs. Do not assume it matches CENTUM VP FCS power modules such as PW482 or PW484.

❗ Verify input voltage. The unit supports 85–264 V AC input. Ensure the cabinet supply voltage and frequency are compatible.

❗ Check mounting clearance. DIN-rail power supplies require adequate ventilation; avoid stacking heat-generating devices directly above the unit.

❗ Match load requirements. Ensure total 24 V DC and 5 V DC loads do not exceed rated output. Excessive capacitive load may affect startup.

❗ Follow electrical safety procedures. AC power wiring should follow lockout/tagout and site maintenance procedures.

Installation steps:

1. Pre-install: Record input voltage, output load, terminal wiring, and DIN-rail position.
2. Isolate power: De-energize the cabinet power supply before wiring.
3. Mount: Install the PW501 on a 35 mm DIN rail with adequate clearance.
4. Wire: Connect AC input and DC output according to the nameplate and site wiring diagram.
5. Power-up: Restore AC power and check output voltage.
6. Verify: Confirm stable 24 V DC output, relay signal status, and normal cabinet operation.

 

Technical FAQ

What is YOKOGAWA PW501?
It is a Yokogawa industrial DIN-rail power supply that converts 85–264 V AC into stable DC outputs, typically 24 V DC / 5 A and 5 V DC / 3 A.

Is it a CENTUM VP FCS power module?
No. It is not confirmed as a CENTUM VP FCS rack power module like PW482/PW484. It is generally used as a cabinet-level DIN-rail power supply.

What output does it provide?
Based on available listings, it provides 24 V DC / 5 A and 5 V DC / 3 A. Always verify the actual nameplate before use.

What should I check before ordering?
Confirm model PW501, input voltage range, output rating, revision, power-fail relay requirement, mounting type, and certification needs. A nameplate photo is the most reliable way to verify compatibility.