Dual-Rail DC Supply for CENTUM VP and ProSafe-RS Control Units
The PW702 S1 serves as a dedicated power supply module within Yokogawa’s CENTUM VP and ProSafe-RS automation platforms. Engineers deploy this Style S1 unit to energize Field Control Units, FIO Node Units, and ESB Bus Repeaters. Consequently, the module delivers stable dual-rail DC power for continuous process operation in critical plants.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PW702 S1 |
| Manufacturer | Yokogawa Electric |
| Product Type | System Power Supply Module (Style S1) |
| Compatible Systems | CENTUM VP, ProSafe-RS, CENTUM CS3000 |
| Input Voltage | 100–240V AC, 50/60 Hz |
| Output Voltage 1 | 5.1V DC @ 12A (Logic Circuits) |
| Output Voltage 2 | 24V DC @ 2.5A (Field Transmitters) |
| Maximum Power Consumption | 200 VA |
| Efficiency | >85% |
| Cooling Method | Forced Air, Fan-Cooled |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Weight | Approximately 1.8 kg |
| Mounting Slots | Paired Rack Slots (Dual Redundancy) |
Dual Output Architecture
The PW702 S1 generates two independent DC rails from a single AC input source. The 5.1V DC rail powers processor logic and backplane circuits. Meanwhile, the 24V DC output supplies field transmitters and I/O signal conditioning. Therefore, engineers eliminate separate power supplies in compact control cabinets.
Redundancy and Reliability
Dual-redundant configurations allow two identical modules to share the load across paired rack slots. If one unit fails, the backup assumes full capacity without process interruption. This design suits critical applications in oil and gas, petrochemical, and power generation facilities.
Protection and Diagnostics
Onboard circuits guard against overcurrent, overvoltage, and short-circuit events on both output rails. Front-panel LED indicators display output health and internal regulation status. Additionally, forced-air cooling maintains stable thermal performance during continuous full-load operation.
Details
| Weight | 0.4 kg |
|---|---|
| Dimensions | 120 × 52 × 125 mm |
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