Product Overview
The Honeywell 900P02-0001 is the rack-mounted power supply module that brings a Honeywell HC900 controller and its I/O to life. Installed in the dedicated power slot at the left-hand end of the rack, it converts a universal AC line input into the regulated 5 V DC and 24 V DC rails that the CPU, the I/O scanner, the backplane communication circuitry and every I/O module in the rack depend on. Without a healthy 900P02-0001, no amount of configuration work matters, which is why experienced maintenance teams treat this module as the first item to check when a controller will not start or an entire rack drops off the network.
What distinguishes the Honeywell 900P02-0001 from the higher-capacity 900P01 family is deliberate right-sizing. At 28 W of output power, it comfortably supplies racks carrying a moderate mix of I/O, and it is the module Honeywell specifies for redundant controller configurations, where two units are installed so that the loss of one supply does not take down the controller. Because it also accepts the full universal input range from 90 to 264 V AC at 47 to 63 Hz, the 900P02-0001 can be deployed in Japanese 100 V networks, North American 120 V panels and European or Asian 230 to 240 V cabinets without an external step-down transformer, which simplifies global machine and skid programmes considerably.
From an integration standpoint, the Honeywell 900P02-0001 slots mechanically and electrically into 4-slot, 8-slot and 12-slot HC900 racks, uses screw-clamp terminals for #12 to 22 AWG conductors, is cooled entirely by natural convection with no fan to fail, and is protected by an internal non-replaceable fuse plus overload, short-circuit and thermal protection. Status indication on the front panel lets a technician confirm power health at a glance, and the controller raises a system alarm if either output rail falls outside limits, so power degradation becomes a logged, actionable event rather than a mystery reset.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 900P02-0001 |
| Manufacturer | Honeywell |
| Product Type | Rack Power Supply Module (AC input, dual DC output) |
| Series / Platform | Honeywell ControlEdge HC900 / Honeywell 900 Series Hybrid Control System |
| Input Voltage | Universal AC, 90 to 264 V AC (nominal 120 / 240 V AC) |
| Input Frequency | 47 to 63 Hz |
| Output Voltage | 5 V DC (logic and backplane) and 24 V DC (I/O and field-side) |
| Output Power | 28 W rated |
| Output Current | Dual rail, approximately 0.9 A and 2.0 A depending on rail and load distribution |
| Protection | Overload, overvoltage, short-circuit and thermal protection; internal non-replaceable 5.0 A fuse |
| Hold-Up Time | Approximately 20 ms at nominal input and full load |
| Cooling Method | Natural convection, no fan |
| Wiring Terminations | Screw-type terminals, #12 to 22 AWG (0.3 to 3.3 mm²) |
| Terminal Cover | Tool-secured cover over high-voltage connections |
| Status Indication | Front-panel LED power status; controller-level system alarm on rail fault |
| Rack Compatibility | HC900 4-slot, 8-slot and 12-slot racks; suitable for redundant controller rack configurations |
| Hot-Swap Capability | Rack power replacement requires planned isolation; observe Honeywell installation procedure |
| Dimensions (H × W × D) | Approximately 137 mm × 72.6 mm × 151 mm |
| Weight | Approximately 0.65 kg |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -40 °C to +70 °C |
| Relative Humidity | 5% to 95%, non-condensing |
| Installation Category | Installation Category II, Pollution Degree 2 per IEC 60664 |
| Safety Approvals | CE, UL, CSA; suitable for Class I Division 2 installations as part of a listed HC900 assembly |
Main Features and Advantages
Universal input for worldwide deployment: The Honeywell 900P02-0001 accepts anything from 90 to 264 V AC at 47 to 63 Hz, so the same part number ships in machines bound for any grid. For OEMs building skids for export, this removes an entire line item from the bill of materials — no step-down transformers, no country-specific supply variants, no risk of a panel being wired for the wrong voltage at the destination site. Field service teams benefit equally, since a single spare 900P02-0001 in the van covers every installation in the region.
Right-sized capacity and redundancy readiness: Not every rack needs 60 W, and the Honeywell 900P02-0001 reflects that reality with a 28 W rating that covers moderate I/O populations while saving cost, panel heat and space. More importantly, it is the module Honeywell specifies in redundant controller racks, where two 900P02-0001 units are installed so that a single supply failure does not drop the controller. This capability is why the part appears disproportionately in critical boiler, furnace and reactor installations where an unplanned controller outage carries a far higher cost than the second power module.
Clean, protected power for sensitive analog electronics: The Honeywell 900P02-0001 delivers tightly regulated 5 V DC for logic and backplane communication alongside 24 V DC for I/O and field-side functions, with filtering that holds ripple and noise low enough to protect the accuracy of high-resolution analog input cards such as the 900A16-0001 and the universal 900TCK-0001. Overload, overvoltage, short-circuit and thermal protection act together with the internal fuse so that a field-side fault isolates the supply rather than propagating damaging energy into expensive CPU and I/O modules.
Service-friendly mechanical design: Natural convection cooling removes the fan as a failure mode, and the compact, slot-based package keeps the supply inside the rack instead of consuming DIN rail space needed for field terminations. High-voltage connections sit behind a tool-secured cover that protects technicians from accidental contact, while front-panel status indication and controller-level power alarms mean a degrading 900P02-0001 announces itself before it takes a process down. Screw terminals accepting #12 to 22 AWG make re-termination straightforward during replacement, and the module’s compatibility across 4-slot, 8-slot and 12-slot racks means one spare part supports an entire installed base.
