Yokogawa SPW482 Power Supply Module

Overview

Configured for internal power distribution in Yokogawa CENTUM VP FIO/N-IO and associated control platforms, the Yokogawa SPW482 (PW482 Power Supply Module) provides isolated electrical power to compatible CPU and I/O hardware through the system backboard. It accepts 220 to 240 V AC input and supports installation in P1 and P2 slots for single or dual-redundant power configurations.

Suffix Breakdown & Model Matrix

The supplied information identifies SPW482 as a power supply module commonly referenced within the PW482 series. Exact suffix-dependent configuration codes were not provided; therefore, no additional suffix decoding is specified.

Process Control Power Distribution

The Yokogawa SPW482 operates within a DCS hardware architecture and supplies internal electrical power through the compatible backboard to installed control and I/O hardware. Unlike field signal modules, the power supply module does not directly process 4-20 mA HART loop signals. Instead, it supports the system infrastructure that powers modules responsible for process signal acquisition and control.

In dual-redundant installations, compatible power supply positions P1 and P2 provide the physical arrangement for redundant power configurations. The actual redundancy behavior depends on the compatible base plate and system architecture.

Frequently Asked Questions

Q: Can the Yokogawa SPW482 be installed in a redundant power configuration?
A: Yes. The supplied specification identifies P1 and P2 as installation slots on compatible base plates and supports single or dual-redundant configurations.

Q: What AC input does the SPW482 accept?
A: The module accepts 220 to 240 V AC input with a tolerance of +/- 10% and operates at 50/60 Hz with a +/- 3 Hz tolerance.

Q: Is the SPW482 designed to directly process process control signals?
A: No. The module functions as a power supply component. Compatible CPU and I/O modules perform process signal acquisition, communication, and control functions.

Field Installation Guidelines

• Verify that the incoming supply matches the specified 220 to 240 V AC input requirement before installation.
• Isolate external power before inserting or removing the module unless the applicable Yokogawa system documentation explicitly permits energized servicing.
• Install the module only in the designated P1 or P2 position on a compatible base plate.
• Confirm correct protective earth and cabinet grounding before energizing the control system.
• Route AC power wiring separately from low-level analog and communication wiring where practical.
• Use the grounding and shielding arrangement specified for the complete Yokogawa control cabinet and backboard assembly.
• For redundant configurations, verify module seating and compatible system status indications after applying power.
• Check the exact suffix code before installation because environmental and protection options may differ between variants.

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