PW482-51

The Yokogawa PW482-51 is a 220-240 V AC input power supply module designed for Yokogawa control system equipment. It supplies operating power to I/O modules and connected transmitters through a dedicated system interface. This version combines the standard type without explosion protection with the ISA Standard G3 option, supporting an extended operating temperature range of -20 deg C to 70 deg C.

Technical Specifications

Parameter	Specification
Model	PW482-51
Brand	Yokogawa
Product Type	Power Supply Module
Input Voltage	220-240 V AC
Input Frequency	50/60 Hz
Input Voltage Tolerance	+/- 10%
Frequency Tolerance	+/- 3 Hz
Maximum Power Consumption	230 VA
Temperature Option	ISA Standard G3
Operating Temperature	-20 deg C to 70 deg C
Explosion Protection	No
Power Supply Terminals	M4 screw terminals
Redundant Configuration	Dual-module configuration
Dimensions	5.1 cm x 20.3 cm x 15.2 cm
Weight	0.9 kg

Power Supply Function and System Integration

The PW482-51 provides power to the I/O modules and transmitters within the supported Yokogawa control system architecture. It is a dedicated system power supply rather than a general-purpose AC/DC power supply. Its output is delivered through an exclusive system interface for the intended control equipment.

The module is designed for installation in supported Field Control Units (FCU), FIO Node Units and Optical ESB Bus Repeater Units. Its input voltage configuration distinguishes it from the PW481 (100-120 V AC) and PW484 (24 V DC).

ISA Standard G3 Option

The -51 ordering configuration identifies the standard type without explosion protection and includes the ISA Standard G3 option. This option supports operation within the specified temperature range of -20 deg C to 70 deg C.

The G3 designation is relevant when selecting replacement modules for installations with specific environmental requirements. It should be retained when matching an existing module configuration.

Redundant Power Supply Configuration

The PW482-51 supports a dual-redundant power supply arrangement using two identical modules with the same model code. In this configuration, the two modules provide the designated redundant power supply arrangement for the supported control equipment.

For single-module installations, the designated power supply slot must be used. For dual-redundant installations, both designated power supply slots are occupied.

Frequently Asked Questions

Q: What is the difference between PW482-50 and PW482-51?

A: Both models use a 220-240 V AC input and have no explosion protection. The PW482-51 includes the ISA Standard G3 option, whereas the PW482-50 is the basic standard configuration without that option.

Q: Can the PW482-51 operate in a dual-redundant configuration?

A: Yes. Two identical PW482-51 modules are required for the dual-redundant configuration. Both modules must have the same model code.

Q: Can the PW482-51 be used as a general-purpose power supply?

A: No. It is a dedicated Yokogawa system power supply module with an exclusive interface. It is intended for supported FCU, FIO Node and Optical ESB Bus Repeater configurations, not standalone general-purpose power distribution.

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