Honeywell PSU-UNI2450 CC V1.0 136-011747G Universal Power Supply Module

Product Description

PSU-UNI2450 CC V1.0, part number 136-011747G, is Honeywell high-reliability universal rack power supply module for Safety Manager SIS safety instrumented system and Experion PKS control system. It accepts wide-range 115/230VAC universal AC input and provides regulated 24VDC output to power safety controllers, redundant CPU and I/O modules. The CC variant is the conformal coated version, V1.0 denotes hardware revision, with built-in multi-stage protection and comprehensive power health diagnostics. Designed for hot-swap operation in redundant power rack configuration, it meets industrial EMC and SIL safety requirements, suitable for continuous 24/7 operation in oil & gas, chemical and power plant control cabinets. This unit is a legacy spare module, market stock includes new surplus and fully tested refurbished units.

Key Functions

• Universal 115/230VAC input, converts to stable 24VDC output for Honeywell SIS racks
• Conformal coated PCB (CC version), protection against dust, humidity and corrosive gas
• Hot-swap support, can be replaced without shutting down the whole control rack
• Full protection functions: overvoltage, overcurrent, short-circuit, over-temperature and under-voltage alarm
• Built-in power monitoring, fault status relay output and LED diagnostic indicators
• Supports redundant parallel operation for power fault tolerance in safety systems
• Compliant with SIL2 safety requirements for safety instrumented systems

Application Scenarios

• Honeywell Safety Manager / Safety Manager SC safety instrumented system cabinets
• Experion PKS distributed control system redundant power racks
• Oil & gas refinery, chemical plant emergency shutdown (ESD) systems
• Power generation, offshore platform safety and fire & gas control systems
• Industrial SIS cabinet maintenance, spare replacement and system retrofit projects

FAQ

Q1: What does CC stand for?
A1: CC means Conformal Coated PCB, offering extra protection for harsh environments with moisture, salt fog and corrosive vapors.

Q2: Can it run in redundant parallel mode?
A2: Yes, two units can work in parallel redundant configuration to avoid single point power failure for SIS system.

Q3: What is V1.0?
A3: V1.0 is the original hardware revision of PSU-UNI2450 series, later upgraded to V2.1.

Q4: Common failure issues?
A4: No DC output, over-temperature alarm, AC input loss detection error, capacitor aging, power status relay malfunction.