Name: Yokogawa PW481-51 / PW484-50 Input Power Supply Modules
Brand: YOKOGAWA
SKU: 2932312
Price: 1 USD
Availability: InStock

Section 01

Product Overview

Yokogawa PW481-51 / PW484-50 are exclusive input power supply modules for CENTUM VP field control units, field I/O units and optical ESB bus repeater modules. Each converts the specified site supply into the internal power required by its host unit; PW481-51 accepts an AC source, while PW484-50 accepts a 24 V DC source.

Within an FCU or I/O unit, PW481-51 / PW484-50 occupy the dedicated P1 or P2 power-module position rather than a signal-I/O slot. A single-power arrangement uses P1, whereas a dual-redundant arrangement requires two units of the same model so that the AC and DC variants are not combined in one pair.

The order codes PW481-51 / PW484-50 also distinguish environmental construction. Both codes specify no explosion-protection option and G3 coating; the remaining selection difference is the incoming supply, which must be matched to the cabinet power distribution before the module is assigned.

Section 02

Technical Specifications

Specification	PW481-51	PW484-50
Brand	Yokogawa
Product type	AC input power supply module	DC input power supply module
Host equipment	FCU, FIO unit or optical ESB repeater
Rated input	100–120 V AC ±10%	24 V DC ±10%
Input frequency	50/60 Hz ±3 Hz	Not applicable
Maximum consumption	200 VA	5.5 A
Power-module position	P1 or P2
Redundant arrangement	Two identical PW481 units	Two identical PW484 units
External connector	Exclusive module connector
Dimensions	49.7 × 149 × 199.5 mm
Approximate weight	1.0 kg
Explosion protection	None
Coating	G3
Operating range code	−20 to 70 °C construction
Order-code suffix	-51	-50

Section 03

Power Path and Module Placement

PW481-51 / PW484-50 separate the incoming-power choice from the host unit’s internal distribution. The three relationships below show where each variant enters the unit and how a redundant pair is formed.

AC supply path

PW481-51 receives 100–120 V AC through the host power connection. Its 50/60 Hz input is the AC branch used when the cabinet distributes mains power to the FCU, FIO unit or optical repeater.

DC supply path

PW484-50 receives a nominal 24 V DC feed. The DC source is selected at the cabinet level, while the exclusive module connector carries the converted power into the host unit.

P1 and P2 positions

PW481-51 / PW484-50 install in the dedicated P1/P2 area. P1 is used for a single module; P1 and P2 are populated with two identical units when redundant power is required.

Section 04

Order-Code and Redundancy Boundaries

The PW481-51 / PW484-50 suffixes define more than a label: they preserve the supply and construction choices that must stay consistent with the host unit and with the second power module.

Identical-pair rule

A redundant PW481-51 / PW484-50 arrangement is model-homogeneous. Two PW481-51 units form the AC pair, or two PW484-50 units form the DC pair.

Environmental suffix

PW481-51 / PW484-50 carry the no-explosion-protection selection and G3 coating. These suffix positions should remain visible when matching an installed module.

Mechanical envelope

PW481-51 / PW484-50 share the same 49.7 × 149 × 199.5 mm envelope and approximate 1.0 kg mass, so supply type—not the outline—distinguishes the two variants.

Section 05

Frequently Asked Questions

Can PW481-51 / PW484-50 be mixed as a redundant pair?

No. PW481-51 / PW484-50 identify different incoming supplies. A redundant installation uses two identical PW481-51 units for AC or two identical PW484-50 units for 24 V DC.

Which slot is used for a single PW481-51 / PW484-50 module?

A single PW481-51 / PW484-50 module is assigned to the P1 power position. P2 is used when the host unit is equipped with the second identical module.

What supply detail must be confirmed before selecting PW481-51 / PW484-50?

Confirm whether the cabinet delivers 100–120 V AC or 24 V DC. PW481-51 / PW484-50 share an outline but do not share an input specification.

Does PW481-51 / PW484-50 use a normal signal-I/O slot?

No. PW481-51 / PW484-50 are exclusive host-unit power modules and occupy the designated P1/P2 power locations, not a signal-module slot.

What does the final digit mean on PW481-51 / PW484-50?

For PW481-51 / PW484-50, the supplied suffixes preserve the construction selection: both are no-explosion-protection versions with G3 coating, while the base model distinguishes AC from DC input.

What information should accompany a PW481-51 / PW484-50 enquiry?

A PW481-51 / PW484-50 enquiry should state the exact installed code, host unit, P1/P2 arrangement, incoming supply and quantity so the AC/DC and redundant-pair boundaries remain explicit.

Section 06

Advantageous Brands

Moore Automation

https://www.mvme.cn

Moore Automation handles enquiries across established control, drive, turbine-control and condition-monitoring families. Requests are recorded by brand, complete model and required quantity before product information is compared.

Yokogawa CENTUM and ProSafe-RS

ABB control and robotics

Siemens SIMATIC and SINAMICS

Bently Nevada monitoring systems

Product Name	Yokogawa PW481-51 / PW484-50 Input Power Supply Modules
Item NO.	2932312
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	YOKOGAWA
Brand	YOKOGAWA
Creation Time	2026-11-13

Yokogawa PW481-51 / PW484-50 Input Power Supply Modules Item NO.: 2932312

Yokogawa PW481-51 / PW484-50 Input Power Supply Modules

Product Overview

Technical Specifications