900P01-0101 Switching Power Supply | Honeywell

Configured for universal AC power conversion and low-voltage rail distribution within ControlEdge HC900 controller and I/O racks, the Honeywell 900P01-0101, also cataloged as the 900P01-0101 Switching Power Supply Module, provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Hardware Specifications

Channel-To-Channel Isolation And Loop Protocol Integrity

The switching power supply incorporates galvanic isolation barriers between primary AC line inputs and secondary 5 VDC and 24 VDC rails to suppress common-mode noise and high-voltage transients. It supports downstream 4-20 mA HART loop protocol power distribution requirements across connected I/O modules without introducing ground loops or common-mode disturbances. Integrated internal voltage regulation circuitry, hold-up time safeguards (20 ms at 115 VAC), and test jacks (5 V and 24 V) stabilize power delivery against line voltage fluctuations.

Frequently Asked Questions

Q: Can multiple 900P01-0101 power supply modules be operated in parallel for redundant load sharing?

A: System architecture guidelines must be verified for the specific controller chassis, as direct paralleling requires dedicated isolation diodes or redundant power configuration modules to prevent reverse current loading.

Q: What precautions should be taken prior to extracting the power supply module?

A: Main AC line power feeding the cabinet distribution panel must be completely isolated, locked out, and tagged out before disconnecting wiring harnesses or unseating the unit.

Field Installation Guidelines

• Verify that primary AC input power is isolated, locked out, and tagged out prior to handling or wiring the power supply module.
• Mount the unit securely in the designated power slot of the ControlEdge rack chassis, ensuring firm mechanical engagement with backplane power pins and proper closure of the tool-secured terminal door.
• Check input screw terminals and output wiring connections for secure mechanical clamping and proper insulation across #12-22 AWG conductors before energizing.
• Measure output DC rail voltages using the integrated test jacks (5 V and 24 V) to verify correct regulation prior to connecting downstream controller modules.