ABB Bailey PHARPS00200000: Redundant Power Supply Module

Physical Dimensions and Mechanical Layout

The ABB Bailey PHARPS00200000 provides reliable DC power for critical control systems. This module measures 150mm in height, 85mm in width, and 110mm in depth. You can mount this unit on a standard 35mm DIN rail inside any main control cabinet. The module weighs 0.68 kilograms , requiring secure mounting due to its robust construction.

Internal Architecture and Component Density

The ABB Bailey PHARPS00200000 contains 192 individual components on its eight-layer PCB. Two independent power stages operate in parallel for true redundancy. Four high-current Schottky diodes isolate each stage from the output bus. Additionally, twelve current-sharing resistors balance the load between both power channels.

Energy Storage and Hold-Up Performance

This power module stores 58.6 joules across ten electrolytic capacitors. This energy reserve maintains full output regulation for 50 milliseconds after input power drops. The storage also supports automatic switchover without any output voltage dip. Consequently, critical loads receive uninterrupted power through input failures.

Interface and Connectivity Features

The ABB Bailey PHARPS00200000 provides two 8-pin terminal blocks for dual AC inputs. A single 24-pin backplane connector links the module to the Bailey system. You will also find two 2-pin connectors for remote voltage sensing on critical loads. Each AC terminal accepts AWG 18 to AWG 10 copper wire for high-current connections.

Redundancy and Load Sharing Operation

This module operates both power stages simultaneously for true parallel redundancy. Each stage supplies 50% of the total load under normal conditions. If one stage fails, the other stage automatically provides 100% power without interruption. The current-sharing circuit maintains equal loading within ±5% between stages.

Protection Features and Safety Circuits

The ABB Bailey PHARPS00200000 includes input overvoltage protection that shuts down at 280V AC. A thermal overload sensor reduces output current when internal temperature reaches 80°C. Output short-circuit protection limits current to 12A and auto-recovers after fault removal. Furthermore, reverse polarity protection prevents damage from accidental output wiring errors.

Diagnostic and Status Indication

Ten LED indicators provide comprehensive status feedback for both power stages. Green AC1 and AC2 confirm valid input on each power channel. Amber OUT1 and OUT2 show each stage’s output activity. Red FLT1 and FLT2 alert you to faults in individual power stages. Two additional LEDs show overall module health and remote sense status conditions.

Remote Monitoring and Alarm Features

The ABB Bailey PHARPS00200000 includes voltage and current telemetry through the backplane. You can read each stage’s output current independently from the host controller. The module also reports temperature status for proactive maintenance planning. Furthermore, the unit provides relay contacts for external alarm indication on any fault.

Environmental Specifications and Compliance

You can operate this power module from -20°C to 60°C ambient temperature without derating. Derate output current by 2.5% per degree between 50°C and 60°C for reliable operation. Storage temperature ranges from -40°C to 85°C for long-term preservation. This module meets UL 508 and CE safety standards for industrial redundant power systems.