PW302-S4 Yokogawa 24 VDC Power Module

Power Supply Module | Yokogawa PW302-S4 PW302 CENTUM

Power Supply Module | Yokogawa PW302-S4 PW302 CENTUM

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Yokogawa PW302-S4 Power Supply Module The Yokogawa PW302-S4, also cataloged as the PW302 Power Supply Module, operates as a dedicated...

رمز المنتج: PW302-S4

Manufacturer: Yokogawa
Product No.: PW302-S4
Product Type: Power Supply Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 3600g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa PW302-S4 Power Supply Module

The Yokogawa PW302-S4, also cataloged as the PW302 Power Supply Module, operates as a dedicated hardware component for 220-240 VAC to 24 VDC power conversion and system bus distribution within CENTUM CS and CENTUM VP Field Control Stations.

Suffix Breakdown & Model Matrix

Base Model (PW302): Standard Yokogawa AC/DC System Power Supply Module designed for Field Control Station (FCS) chassis slots.
Style Code (-S4): Hardware revision designator specifying internal circuit component baselines and backplane edge-connector pin layout configuration.

Hardware Specifications

Parameter	Specification
Model	PW302-S4
Brand	Yokogawa
Origin	Japan
Weight	3.6 kg
Dimensions	10.2 x 27.9 x 25.4 cm
Operating Temp	0 to 55 deg C
Power Consumption	300 W output capacity (efficiency >= 90-92% typical)
Input Voltage	220-240 VAC, 50/60 Hz
Output Voltage	24 VDC (regulated)
Power Factor	>= 0.9
Redundancy	Dual-module hot-standby capable
Circuit Protection	Overvoltage, overcurrent, and short-circuit protection

Galvanic Isolation & Fieldbus Loop Power Dynamics

The PW302-S4 features galvanic isolation between the primary AC line input and secondary 24 VDC output buses to suppress electrical noise propagation into internal logic cards and field communication lines. By delivering low-ripple DC power directly to the backplane, the unit maintains voltage stability for connected 4-20 mA HART loops and FOUNDATION Fieldbus segments, protecting analogue signal channels against ground loop interference across the control node.

Frequently Asked Questions

Q: Can a failed PW302-S4 module be replaced while the control system remains energized?

A: Yes, hot-swapping is supported provided the Field Control Station rack utilizes a dual-redundant power configuration where the parallel power module carries the operational load.

Q: What primary wiring precautions must be taken for the 220-240 VAC input connections?

A: Connect the AC power conductors to the dedicated terminal assembly and ensure a low-impedance ground conductor secures directly to the chassis protective earth bolt before energizing the feeder circuit.

Q: Does the PW302-S4 require external active cooling fan units inside the rack?

A: No, the module relies on internal thermal dissipation design, but proper vertical cabinet ventilation paths must remain unblocked to prevent heat buildup around internal power components.

Field Installation Guidelines

Power Disconnection: De-energize primary AC feeder lines prior to landing supply conductors on the module input terminal block, except when performing a live hot-swap under verified dual-redundant operating conditions.
Slot Engagement: Align the module frame with the card guides of the dedicated Field Control Station power supply slot. Slide the unit inward until the rear heavy-duty connector mates firmly with the backplane power bus.
Mechanical Securing: Tighten the top and bottom retaining screws to hold the module in position and maintain earth ground continuity between the module chassis and the rack frame.
Shielding and Clearance: Route AC mains cables away from sensitive DC signal lines and fieldbus communication trunks. Maintain required air gap clearances above and below the card cage for natural thermal airflow.

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