YOKOGAWA PW441-10 System Power Supply Module – Stable 24 VDC backplane power for Yokogawa control racks

The YOKOGAWA PW441-10 is a dedicated system power module designed to feed the internal DC rails of Yokogawa control racks. From my experience, it’s the kind of drop-in power supply you pick when you want long-term stability, clean power to the backplane, and straightforward redundancy options without reshaping your cabinet layout. You might notice that it’s typically used to replace a failed PSU or to build a redundant pair in a running node to cut downtime risk.

Company’s Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week for in-stock; no more than one month at the latest
• Payment method: 50% advance payment; full payment for delivery
• Express delivery methods: FedEx, UPS, DHL

Key Features

• 24 VDC system input – Feeds the controller backplane with regulated DC power; typically used with 24 VDC plant supplies or UPS-backed rails.
• Redundancy-ready design – In many cases can be used in a dual configuration for N+1 power redundancy, reducing the impact of a single PSU failure.
• Front-panel diagnostics – Status LEDs for quick checks during commissioning or troubleshooting.
• Rack-compatible form factor – Fits the designated power slot of compatible Yokogawa racks; no custom brackets in normal situations.
• Industrial temperature capability – Typically supports control-room temperatures common to DCS/PLC enclosures.
• Low maintenance – No signal wiring; periodic visual checks and dust cleaning are usually enough.

Technical Specifications

Application Fields

This module is used in control cabinets powering Yokogawa racks in process industries. Typical scenarios include:

• DCS/SIS nodes in oil & gas, petrochemical, and refining units
• Power generation and utilities control rooms
• Water and wastewater facilities upgrading legacy power modules
• Pharmaceutical and fine chemical plants aiming for PSU redundancy

One thing I appreciate is how quickly maintenance teams can recover a node by swapping the power module. A maintenance lead at a gas processing site told me they restored a controller bay in under 10 minutes after slotting in a PW441-10 and rebalancing the redundant pair.

Advantages & Value

• Reliability – Clean, stable backplane power that typically reduces nuisance trips and intermittent faults linked to aging PSUs.
• Compatibility – Designed for Yokogawa racks using the PW441-10 slotting scheme; keeps your wiring intact and avoids panel rework.
• Cost savings – Redundant pairing and quick replacement keep downtime and callout hours to a minimum.
• Support – We help verify rack compatibility and redundancy setup so you receive the right unit the first time.

Installation & Maintenance

• Cabinet & environment – Install in a clean, ventilated control cabinet. Maintain ambient within typical 0–55°C and avoid condensation.
• Power wiring – Use a stable 24 VDC source (preferably UPS-backed). Follow Yokogawa torque specs and protective earth grounding practices.
• Redundancy – For N+1 setups, pair two units according to the rack/controller manual and verify load-sharing and status LEDs after power-up.
• Hot swap – Many racks support online replacement; if unsure, schedule a brief downtime window and follow site LOTO procedures.
• Routine checks – Inspect LED status during rounds, clean dust filters/vents, and confirm terminal tightness during periodic PMs.

Quality & Certifications

• Typically conforms to industrial EMC and safety standards; CE/UL compliance is common on Yokogawa rack modules (verify per your exact revision).
• RoHS alignment is typical for current-production units.
• Warranty: 365 days coverage as stated above.

Tip: If you are replacing an existing unit, share the rack/controller part number or a photo of the nameplate. It helps confirm redundancy options and the correct -10 variant for your cabinet.