Overview
Configured for regulated DC power delivery in Yokogawa CENTUM CS/VP DCS and ProSafe-RS SIS platforms, the Yokogawa PW701 (PW701 Power Supply Module) provides electrical power for associated control, processor, I/O, and communication hardware. The module accepts AC input power and delivers a +5.1 VDC output with a maximum output current of 29 A.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PW701 |
| Brand | Yokogawa |
| Product Type | Power Supply Module |
| System Compatibility | Yokogawa CENTUM CS/VP DCS and ProSafe-RS SIS |
| Input Voltage Range | 100-120 VAC / 220-240 VAC |
| Input Frequency | 50/60 Hz |
| Input Current | 4.0 A max |
| Output Voltage | +5.1 VDC |
| Output Current | 29 A |
| Maximum Output Power | 147.9 W |
| Protection Features | Overvoltage, overcurrent, and short-circuit protection |
| Redundancy Support | Dual-module configuration supported |
| Mounting | Modular rack or cabinet installation |
| Operating Temp | -10 deg C to +55 deg C |
| Power Consumption | Not specified separately; maximum output power is 147.9 W |
| Weight | Approx. 2.0 kg |
| Origin | Japan |
DCS Power Distribution Characteristics
The PW701 supplies regulated DC power to compatible Yokogawa control hardware through the applicable system power distribution architecture. Its +5.1 VDC output supports a maximum load current of 29 A. In addition, the module can operate in a dual-module redundancy arrangement when the compatible system configuration supports redundant power operation.
Yokogawa CENTUM and ProSafe-RS architectures also integrate process control hardware that can support 4-20 mA HART loops, FOUNDATION Fieldbus, Profibus PA, and isolated I/O interfaces. The PW701 functions as a system power component and does not itself provide field signal measurement, HART communication, or direct fieldbus connectivity.
Frequently Asked Questions
Q: What DC output does the Yokogawa PW701 provide?
A: The PW701 provides a regulated +5.1 VDC output with a maximum output current of 29 A and a maximum output power of 147.9 W.
Q: Can the PW701 operate in a redundant power configuration?
A: The module supports dual-module configurations. The actual redundancy behavior depends on the compatible Yokogawa rack, power distribution architecture, and system configuration.
Q: Does the PW701 directly process field signals or communication protocols?
A: No. The PW701 is a power supply module. It supplies DC power to compatible system hardware rather than directly processing 4-20 mA signals, HART data, or fieldbus communication.
Field Installation Guidelines
Install the PW701 only in a compatible Yokogawa rack or cabinet position intended for the applicable power supply architecture.
Verify the available AC input voltage and frequency before energizing the module. Isolate external power before installation or removal unless the applicable Yokogawa system documentation explicitly permits energized maintenance procedures.
Use the specified cabinet grounding arrangement and maintain separation between AC power wiring and low-level signal wiring. In addition, route power conductors to minimize exposure to electrical noise sources and avoid excessive mechanical stress on connected hardware.
When using a redundant configuration, install the power modules according to the compatible Yokogawa system architecture. Verify the system power status and load distribution after commissioning.
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