Honeywell 900PSM-0101 Redundant Power Status Module

Product Overview

The Honeywell 900PSM-0101 is a Redundant Power Status Module designed for the ControlEdge HC900 controller family. It monitors the health and status of redundant power supplies in HC900 racks, providing real-time visual indication of power supply operation, faults, and switchover events. The 900PSM-0101 is essential for maintaining high availability in redundant power configurations, giving operators immediate visibility into power system integrity.

Key Features

• Redundant power status monitoring — tracks both primary and backup power supplies
• LED status indicators for instant visual diagnostics
• Power fault detection — alerts on power supply failure or degradation
• Switchover event logging — records power transfer between redundant supplies
• Compact module design — installs in standard HC900 rack slot
• Low power consumption — minimal impact on rack power budget
• Compatible with all HC900 redundant power supply configurations

Technical Specifications

• Model: 900PSM-0101
• Product Type: Redundant Power Status Module
• Series: ControlEdge HC900
• Function: Monitor and indicate redundant power supply status
• Power Consumption: 22 mA @ 5 VDC
• Indicators: LED status lights for power supply health
• Monitoring: Primary power, backup power, fault detection
• Dimensions (L × W × H): 180 × 115 × 63 mm (7.1" × 4.5" × 2.5")
• Weight: Approx. 0.5 kg (1.1 lbs)
• Operating Temperature: 0°C to +60°C
• Storage Temperature: −25°C to +70°C
• Humidity: 5% to 95% RH (non-condensing)
• Mounting: HC900 rack slot
• Certifications: CE, UL, CSA

Typical Applications

• Redundant power supply monitoring in critical control systems
• High-availability process automation
• Safety instrumented systems (SIS) with redundant power
• Power system diagnostics and maintenance
• Control cabinet status indication panels

FAQ

Installation Guide

1. Power Down: De-energize the rack before installing the 900PSM-0101.
2. Slot Selection: Insert the module into an available I/O slot in the redundant power rack (900RxxR-xxxx series).
3. Power Connection: The module draws power from the rack backplane — no external wiring required.
4. LED Verification: Power on and confirm LEDs indicate the correct power supply status (typically green for healthy, red for fault).
5. Fault Testing: During commissioning, simulate a power supply failure to verify the PSM correctly indicates the fault and switchover event.

Selection Tips

• Select the 900PSM-0101 for legacy redundant power monitoring or when specified in existing system documentation.
• For new installations, consider the 900PSM-0200 for latest features.
• Install one PSM per redundant power rack for complete status visibility.
• Verify power supply part numbers are compatible with the PSM revision.