Description
Product Core Brief
- Model: 5X00241G01
- Brand: Westinghouse / Emerson Ovation heritage
- Core Function: Widely listed as a controller side board for an Ovation DPU, often described as the CPU or processor card inside an OCR400 style controller
- Common Pairing: OCR400 controllers are commonly listed as 5X00241G02 with 5X00226G01 or G02, which puts G01 in the same controller family rather than in the field I/O world
- Common Confusion: Reseller pages push this number as a stepper encoder interface for closed loop positioning, a 200V module with CAN and RS485 configured in STEP 7, and a generic PLC module, none of which match Ovation controller hardware
- Condition: New Surplus / Pulled Used, nameplate photo and rack photo required
Product Introduction
Westinghouse 5X00241G01 sits inside the Ovation controller conversation. Many spare lists group it with OCR400 controller hardware, and OCR400 is commonly written up as 5X00241G02 paired with 5X00226G01 or G02 Some suppliers describe G01 directly as the CPU board used in an OC400 controller Other sellers frame it as the processor module for an Ovation DCS controller rack, handling control logic execution and task scheduling, backplane powered, slide in format, and used in A/B redundant setups
The bad listings are loud. One page claims this part provides closed loop positioning control and pairs with an encoder input module in a stepper system, which is copied motion control text with no link to Ovation Another claims a 64 bit processor, 200V supply, Ethernet, RS485, CAN and configuration through STEP 7 or STEP 7 MicroWIN, which is Siemens tooling language pasted onto a Westinghouse part number A third simply sells it as a generic PLC module with a one year warranty and one to two day lead time
Why this matters. A controller board failure takes a whole DPU down, kills redundancy and drops many points at once, while an I/O card usually only kills the channels on one slot. If you buy based on a copied stepper or Siemens description, you can burn an entire outage window before anyone checks the rack files.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5X00241G01 |
| Brand Grouping | Westinghouse, Emerson Ovation heritage |
| Most Common Listing | Controller CPU or processor board for an Ovation OCR400 style DPU |
| Related Controller Parts | 5X00241G02, 5X00226G01, 5X00226G02 grouped in OCR400 listings |
| System Role | Runs control logic, schedules tasks, supports redundancy behavior and talks to the I/O subsystem |
| Power | Commonly described as backplane supplied DC rather than a separate field supply |
| Field I/O | No direct field wiring, signals reach it through the controller backplane and I/O subsystem |
| Mounting | Slide in rack card with keyed connectors and front retention |
| Cabinet Environment | Climate controlled cabinet, stable cooling, low dust, intact ground bonding |
| Configuration Dependency | Ovation version, controller database, Control Builder logic, downloaded configuration, redundancy setup |
| Common Failure Signs | DPU will not boot, no bumpless switchover, repeated restart, lost I/O branch communication, stale points across many loops |
| Conflicting Reseller Claims | Stepper encoder closed loop positioning module, 200V module with CAN and RS485 configured in STEP 7, generic PLC module |
| Verification Method | Nameplate photo, rack photo, controller chassis model, Ovation version, controller database export, prior switchover records |
No confirmed factory datasheet is publicly available under this number alone, so treat catalog blurbs as leads until matched to your own project files.
Quality Control Process
Controller boards get verified against your rack documentation before anything gets paid for.
- Nameplate and suffix check. Confirm it really is G01 and not G02, since OCR400 listings commonly reference 5X00241G02 with 5X00226G01 or G02
- Confirm the controller generation. Check whether your rack actually runs OCR400 hardware rather than OCR161 or a later controller family.
- Ovation version and firmware review. Controller hardware and software have to line up or the DPU will not come up cleanly even with a good board.
- Pull the controller database and backup first. Confirm you have a current backup before touching a running DPU so you can restore if the swap fails.
- Plan the redundancy path. Force a controlled primary to secondary change before pulling the active board, and confirm the standby is healthy.
- Scan affected points out of service. Take loops out of service in the I/O configuration before the swap, then restore them afterward.
- Check pins and seating. Slide the card in carefully with keyed connectors and confirm full seating before energizing, since misaligned pins can burn the board instantly
- Watch the diagnostics. Ovation modules use status LEDs to show power, communication and internal fault states, and controller alarms plus system logs should be reviewed after the swap
- ESD bag with desiccant. Pulled controller boards stored in humid warehouses often fail silently months later.
I once watched a team lose most of a planned outage because a buyer trusted a listing calling the part a stepper positioning module. The rack needed controller side hardware, nobody checked the controller database, and the DPU refused to come up as primary until they traced it back to the wrong board.
Replacement Pitfall Guide
❗ Believing the stepper encoder story. Pages claiming closed loop positioning with an encoder feedback module are copied motion control text, not Ovation controller data
❗ Believing the Siemens style specs. Claims of 200V supply, CAN, RS485 and STEP 7 configuration belong to a completely different product family
❗ Confusing G01 with G02. OCR400 is commonly listed as 5X00241G02 with 5X00226G01 or G02, so the suffix changes what you actually receive
❗ Treating it as an I/O card. Controller hardware failure and I/O failure look nothing alike, and swapping the wrong one leaves the DPU down.
❗ Skipping the backup. No current controller database or system backup means a failed swap becomes a long recovery instead of a quick part change.
❗ Pulling the active board without a controlled switchover. That risks a hard loss of control rather than a bumpless transfer.
❗ Trusting blanket one year warranties and instant delivery. Sealed box claims, flat warranties and fast lead times are catalog habits, not proof of verified stock
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| 5X00241G01 | Refurbished same part | Needs Verification | Confirm nameplate, chassis, Ovation version and boot behavior |
| 5X00241G01 | 5X00241G02 | Needs Verification | Commonly listed in OCR400 controller pairings, confirm which one your rack uses |
| 5X00241G01 | 5X00226G01 or 5X00226G02 | Needs Verification | Grouped with OCR400 in spare lists, confirm role before ordering |
| 5X00241G01 | 5X00105G14 with 3A99190G01 | Not Compatible | Listed as OCR161 controller hardware, earlier generation |
| 5X00241G01 | 5X00119G01 with 5X00121G01 | Not Compatible | RTD input electronic and characteristic pair |
| 5X00241G01 | 1C31224G01 with 1C31227G01 | Not Compatible | 4 to 20mA analog input electronic and characteristic pair |
| 5X00241G01 | Ovation upgrade with current controllers | Needs Adaptation | Rewiring, FAT, logic migration, redundancy retest and operator training |
Benchmark references
- Acceptance criterion: DPU boots from the restored configuration, comes online to the network, all configured I/O branches show healthy communication and no internal fault alarms remain.
- Stability target: bumpless primary to secondary switchover with no lost points and no control output jump, sustained over a 24 hour watch including cabinet HVAC cycling and large motor starts.
