PW702-S1 Yokogawa ProSafe-RS Datasheet & Technical Manual

Availability: 99 left in stock

Yokogawa PW702-S1 ProSafe-RS/CENTUM VP Series Configured for high-integrity power execution in Safety Instrumented Systems (SIS) and Distributed Control System (DCS)...

SKU: PW702

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

Description Reviews

Yokogawa PW702-S1 ProSafe-RS/CENTUM VP Series

Configured for high-integrity power execution in Safety Instrumented Systems (SIS) and Distributed Control System (DCS) architectures, the Yokogawa PW702-S1 (PW702 Power Supply Module) provides direct physical/electrical execution. It operates as a dedicated hardware component for converting universal AC or DC input into a precision-regulated 5.1 VDC logic rail within CENTUM VP Field Control Stations (FCS) and ProSafe-RS networks.

Suffix Breakdown & Model Matrix

PW702: High-Capacity Power Supply Module for Field Control Stations.
-S1: Style 1 Revision featuring optimized internal heat sink architecture and transient filtration.
S9152DC-04: Specific factory internal revision code for physical and electrical backplane compatibility.

Hardware Specifications

Parameter	Specification
Model	PW702-S1 (S9152DC-04)
Brand	Yokogawa Electric Corporation
Origin	Japan
Input Voltage Range	85-264 VAC (50/60 Hz) or 88-300 VDC
Output Voltage	+5.1 VDC (Precision Regulated)
Output Current	29 A (Continuous)
Output Power	148 W
Efficiency	Ge 90%
Redundancy	1:1 Hot-Standby with Automatic Failover
Safety Integrity	IEC 61508 SIL2 Certified
Cooling Method	Natural Convection (Fanless design)
Operating Temp	-10 to +50 deg C
Dimensions	25.4 x 7.6 x 27.9 cm
Weight	2.0 kg
Power Consumption	164 W at maximum rated output load

Process Control & DCS Instrumentation Integration

The PW702-S1 utilizes embedded diagnostic reporting mechanisms that interface directly with the FCS backplane. It continuously executes real-time measurements of output voltage, load current, and internal thermal thresholds. This diagnostic data is mapped directly to the system bus, allowing the Human Interface Station (HIS) to process the parameters without external transmitter loops. Additionally, the internal circuit architecture incorporates cold junction compensation (CJC) considerations and strict channel-to-channel isolation protocols across adjacent modules on the rack to prevent ground loops and signal interference from degrading the 5.1 VDC logic plane during cross-talk events.

Frequently Asked Questions

Q: What is the maximum physical failover latency during a primary module fault condition? A: In a 1:1 dual-redundant configuration, the hot-standby circuit manages automatic failover instantaneously. The output voltage drop during a primary hardware failure remains within the standard logic tolerance, resulting in a 0 ms interruption to the CPU and I/O modules.

Q: Can this module accept mixed input sources in a redundant pair setup? A: Yes. Because the wide-range internal rectifying circuitry accepts both 85-264 VAC and 88-300 VDC automatically, one module can be tied to an AC mains distribution block while the secondary redundant module is fed by an independent high-voltage DC battery bank.

Q: Does the unit require external active ventilation when operating at the maximum 29 A threshold? A: No. The unit relies strictly on natural convection cooling. It must be installed vertically with standard spacing to ensure the thermodynamic properties of the built-in heat sinks operate within the -10 to +50 deg C ambient limits.

Field Installation Guidelines

Chassis Grounding Sequence: The module relies on the chassis grounding contacts located on the rear backplane connector interface. Ensure the enclosure cabinet ground bus bar is tied to a low-impedance instrument ground system (< 1 Ohm) before energizing the input mains.
Module Insertion and Retention: Slide the module into the designated slot along the guide rails until the rear connectors are completely seated. Secure the upper and lower mechanical retaining screws to eliminate vibration-induced contact resistance.
Wiring Terminals: External power wiring must maintain proper separation from low-voltage I/O signal lines. Use specified wire gauges capable of sustaining the maximum rated input current while accounting for localized thermal conditions inside the termination cabinet.

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.