ProSafe-RS SIL2 Power Module | PW702-S1 Yokogawa

Availability: 99 left in stock

Product Overview The Yokogawa PW702-S1 (S9152DC-04) serves as the high-integrity power core for CENTUM VP Field Control Stations (FCS) and ProSafe-RS Safety Instrumented Systems (SIS)....

SKU: PW702

Manufacturer: Yokogawa
Product No.: PW702
Product Type: Redundant DCS Power
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Yokogawa PW702-S1 (S9152DC-04) serves as the high-integrity power core for CENTUM VP Field Control Stations (FCS) and ProSafe-RS Safety Instrumented Systems (SIS). This module converts universal AC or DC input into a precision-regulated 5.1V DC logic rail, delivering a massive 29 Amps to sustain high-density CPU and I/O configurations. We supply this unit as 100% Brand New and Original, providing the factory-certified SIL2 reliability required for mission-critical safety loops and process control.

Part Number Breakdown: PW702 Series

PW702: High-Capacity Power Supply Module for Field Control Stations.
-S1: Style 1 Revision: Optimized internal heat-sync architecture and transient filtration.
S9152DC-04: Specific internal revision code ensuring compatibility with the latest ProSafe-RS and CENTUM VP backplanes.

Technical Specifications

Feature	Specification Details
Manufacturer	Yokogawa Electric Corporation
Model Number	PW702-S1 (S9152DC-04)
Input Voltage Range	85–264 V AC (50/60 Hz) or 88–300 V DC
Output Voltage	+5.1 V DC (Precision Regulated)
Output Current	29 Amps (Continuous)
Output Power	~148 Watts
Efficiency	≥ 90%
Redundancy	1:1 Hot-Standby with Automatic Failover
Safety Integrity	IEC 61508 SIL2 Certified
Cooling Method	Natural Convection (Fanless design)
Operating Temp	–10 °C to +50 °C
Dimensions	25.4 x 7.6 x 27.9 cm (10.0 x 3.0 x 11.0 in)
Weight	2.0 kg (4.4 lbs)

Engineering Advantages

SIL2 Safety Compliance: The PW701/PW702 series carries IEC 61508 SIL2 certification. This allows for direct integration into Safety Instrumented Systems (SIS). The module maintains the strict hardware fault tolerance required for Emergency Shutdown (ESD) and Fire & Gas (F&G) applications.
Massive 29A Current Delivery: High-performance DCS processors and digital I/O modules demand substantial logic power. The PW702-S1 provides a robust 29 Amps of regulated 5.1V DC, preventing the voltage dips and logic glitches that occur when using underpowered third-party alternatives.
Intelligent Diagnostic Reporting: This module does not merely supply power; it communicates. The PW702-S1 reports its output voltage, load current, and internal temperature status back to the Human Interface Station (HIS) via the FCS backplane, enabling predictive maintenance before a failure occurs.
High-Efficiency Fanless Design: Utilizing a ≥90% efficiency architecture, the PW702-S1 minimizes heat dissipation. The natural convection cooling removes the need for mechanical fans, which are the primary failure point in industrial power supplies. This design prevents the intake of corrosive dust and metallic particles common in heavy industry.
Fault-Tolerant Redundancy: The module supports 1:1 hot-standby redundancy. When installed in pairs, the system manages a seamless automatic failover. Should the primary module experience a fault, the secondary module assumes the full load instantly without causing a system reset or process interruption.

FAQs

Can the PW702-S1 replace the PW701 model?

While functionally similar in output, the PW702 is specifically optimized for newer Field Control Stations and ProSafe-RS racks. Always verify the backplane connector and specific station model (FCS) before replacing a PW701 with a PW702.
Does the module require manual switching for DC input?

No. The wide-range input circuitry automatically accepts either 85–264 V AC or 88–300 V DC. This flexibility allows the module to work with standard plant mains or high-voltage battery backup systems without hardware modification.
What are the specific grounding requirements?

Proper grounding is mandatory for the PW702-S1 to achieve its rated EMI/RFI protection. Ensure the module is fully seated in the rack and that the cabinet's grounding bus meets Yokogawa's installation standards for DCS equipment.
Why is "Brand New" condition vital for the PW702-S1?

As a SIL2-rated component, the PW702-S1's reliability is calculated based on the lifespan of its internal components. Used or "refurbished" modules carry an unknown history of thermal stress, which significantly degrades the electrolytic capacitors. Only a 100% Brand New unit ensures your safety system maintains its integrity for the full duration of its design lifecycle.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.