Honeywell TK-FFSU01 51309582-275 Power Supply Board

Technical Specifications Overview

The table below details the core technical parameters of this power supply board.

Parameter	Specification
Model Number	TK-FFSU01 51309582-275
Product Type	Power Supply Board
Compatible System	Honeywell Experion PKS Series
Input Voltage	24 VDC (nominal)
Input Voltage Range	18 VDC to 30 VDC
Output Voltage 1	5 VDC at 18 A
Output Voltage 2	+12 VDC at 3 A
Output Voltage 3	-12 VDC at 1.5 A
Redundancy Support	Dual-redundant (parallel operation)
Hold-Up Time	25 ms (minimum, at full load)
Efficiency	≥ 87% (typical at full load)
Protection Features	Over-voltage, over-current, and short-circuit
Health Monitoring	Integrated diagnostic status reporting
Indicators	4 LEDs (Input OK, 5V, +12V, -12V OK)
Dimensions (W x H x D)	45 mm x 130 mm x 120 mm
Weight	0.35 kg
Operating Temperature	0°C to +60°C

Robust Power Distribution for Experion Systems

The TK-FFSU01 51309582-275 power supply board delivers stable, regulated DC power for Honeywell Experion PKS control system components. This power supply board accepts a nominal 24 VDC input, with a wide range of 18 VDC to 30 VDC accommodating varying field power conditions. The unit provides three isolated output rails: 5 VDC at 18 A, +12 VDC at 3 A, and -12 VDC at 1.5 A for powering the backplane and installed modules.

The 5 VDC output supplies the primary power for processors, I/O modules, and communication interfaces through the backplane. The ±12 VDC outputs power analog circuits and other specialized modules. The TK-FFSU01 achieves an efficiency rating of 87%, minimizing heat generation and reducing energy costs in large system installations.

Redundancy and Comprehensive Protection

This power supply board supports dual-redundant operation, allowing two units to operate in parallel for continuous power availability. The TK-FFSU01 includes integrated OR-ing diodes that enable seamless failover without interrupting system operation. This redundancy eliminates single points of failure in the power distribution chain.

The board features comprehensive protection against over-voltage, over-current, and short-circuit conditions. These safeguards automatically engage during fault events, protecting both the power supply and connected modules from damage. The unit automatically recovers once the fault condition clears, minimizing system downtime.

Health Monitoring and Diagnostic Capabilities

This power supply board includes integrated diagnostic status reporting that continuously monitors power quality and health. The TK-FFSU01 communicates its operational status to the system controller, enabling proactive maintenance alerts. Four LEDs on the front panel—Input OK, 5V OK, +12V OK, and -12V OK—provide immediate visual confirmation of each output rail.

The board achieves a minimum hold-up time of 25 ms at full load, providing sufficient time for the controller to execute an orderly shutdown during power interruptions. This feature is particularly valuable in process control environments where sudden power loss could lead to product quality issues or equipment damage.

Physical Design and Installation Features

This power supply board occupies a single slot in the Experion 13-slot chassis and measures 45 mm in width. The module weighs only 0.35 kg, making handling straightforward during installation and replacement. The front-panel connectors include both power input terminals and status reporting interface.

The TK-FFSU01 51309582-275 requires only the 24 VDC input connection, distributing all outputs through the backplane without additional wiring. This design simplifies installation and reduces the risk of wiring errors. The board operates reliably across a temperature range of 0°C to +60°C.