Description
Product Core Brief
- Model: 5X00226G02
- Brand: Westinghouse / Emerson Ovation heritage
- Core Function: Widely listed as part of the OCR400 controller set for an Ovation DPU, working together with 5X00241G02 to run control logic and talk to the I/O subsystem
- Product Family: 5X00226 series, where G01 is often described as a relay output module for Ovation, G02 shows up in OCR400 controller pairings, and G03 appears in OCR1100 pairings with 5X00481G01
- Common Confusion: Reseller pages push this number as a solid state relay output card, a 5 inch capacitive touch screen, a generic PLC input output module and even a DPU computer module, none of which agree with each other
- Condition: New Surplus / Pulled Used, nameplate photo required
Product Introduction
Westinghouse 5X00226G02 is most often listed alongside 5X00241G02 as the OCR400 controller combination in Ovation spare tables, sitting between the older OCR161 and the newer OCR1100 setup with 5X00481G01 That framing treats it as controller side hardware rather than a field I/O card.
The market noise on this part is unusually messy. One catalog sells it as a solid state relay digital output card with channel to backplane isolation and backplane power Another describes it as a 5 inch capacitive touch screen with 800 by 480 resolution A third calls it a general PLC input output module handling digital, analog, RTD and thermocouple signals with USB interfaces A fourth lists it as a possible Ovation DPU computer module responsible for data processing and transfer Those are at least four different products wearing the same number, which is a template problem, not a real spec sheet.
That matters because a controller card and a relay output card fail completely differently. A controller problem kills a whole DPU, drops redundancy and takes many points offline at once, while an output card usually only kills the channels on that slot. Buying the wrong half based on a copied listing can waste an entire outage window.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5X00226G02 |
| Brand Grouping | Westinghouse, Emerson Ovation heritage |
| Most Common Listing | Part of the OCR400 controller set with 5X00241G02 |
| Related Variants | 5X00226G01 listed as relay output module, 5X00226G03 listed with OCR1100 setup |
| System Role If Controller Side | Runs control logic, handles redundancy behavior and interfaces with I/O |
| System Role If Output Card | Drives solenoids, interposing relays, beacons and starters with isolated contacts |
| Mounting | Plug in module into an Ovation base or card file with field terminations on a terminal board |
| Configuration Dependency | Controller database, I/O Builder slot config, firmware or Ovation version, terminal board mapping |
| Common Failure Signs, Controller | DPU will not boot, no bumpless switchover, repeated restart, lost I/O communication |
| Common Failure Signs, Output Card | Stuck output, channel will not energize, intermittent activation, burnt contact, failed suppression circuit |
| Conflicting Reseller Claims | Solid state relay output, 5 inch capacitive touch screen, universal PLC I/O module, DPU computer module |
| Verification Method | Nameplate photo, rack photo, Ovation version, I/O Builder slot export, controller database, terminal board model |
| Environment | Climate controlled cabinet, low dust, stable power, single point grounding |
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
This part gets verified against your own cabinet drawing before anything gets paid for.
- Nameplate and suffix check. Confirm it really is G02, since G01 and G03 sit in the same series and point at completely different roles.
- Confirm the pairing in your files. If your rack runs an OCR400 setup, verify 5X00241G02 is the partner card before assuming a match
- Ovation version and firmware review. Controller hardware and software have to line up, otherwise the DPU will not come up cleanly even with a good board.
- Scan off points before pulling. In I/O Builder, select the slot, use Service, set all points out of service and apply, then after the swap restore points to their original status and apply
- Follow the module install order. Install the characteristic module into the base first, then slide in the electronic module so it locks the characteristic module, then close the blue locking lever, and reverse that order when removing
- Check pin alignment carefully. Misaligned pins can burn the module as soon as power goes on, so confirm the card seats fully before energizing
- Read the status LEDs. P is power, green normal and red abnormal, C is communication to the PCI bus, E is ground fault and I is internal card error
- Redundancy and channel test. Force a primary to secondary change for controller hardware, or drive each output channel with suppression in place for relay style cards.
I once watched a plant lose a shift because a buyer ordered by number only. The listing called it an output card, the rack actually needed the controller half of an OCR400 set, and nobody checked the I/O Builder slot export until the DPU refused to come back online.
Replacement Pitfall Guide
❗ Trusting a solid state relay description. Some catalogs push isolation, bounce free switching and backplane power for this number, which conflicts with OCR400 controller listings
❗ Believing touch screen specs. Pages describing a 5 inch capacitive panel with 800 by 480 resolution have nothing to do with an Ovation controller or I/O card
❗ Treating it as a universal PLC module. Generic writeups claiming digital, analog, RTD, thermocouple and USB support are template content, not Ovation documentation
❗ Ignoring the G suffix. G01 is commonly described as a relay output module, while G03 shows up paired with OCR1100 hardware, so the suffix decides everything
❗ Pulling the card without scanning points off. Take the slot out of service in I/O Builder first and restore it after, otherwise you risk unexpected behavior during the swap
❗ Forcing the card into the base. Install the characteristic module first, then the electronic module, then close the blue lever, and never force misaligned pins
❗ 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 |
|---|---|---|---|
| 5X00226G02 | Refurbished same part | Needs Verification | Confirm nameplate, partner card, Ovation version and boot behavior |
| 5X00226G02 | 5X00241G02 | Required Pair | Commonly listed together as the OCR400 controller combination |
| 5X00226G02 | 5X00226G01 | Not Compatible | Commonly described as a relay output module for Ovation |
| 5X00226G02 | 5X00481G01 with 5X00226G03 | Needs Adaptation | Listed as an OCR1100 setup with different processor and power design |
| 5X00226G02 | 5X00105 series OCR161 board | Not Compatible | Earlier controller family with different memory and rack behavior |
| 5X00226G02 | 1B30035H01 or 5X00497G01 base | Required Accessory | Bases and terminal boards must match your cabinet drawing |
| 5X00226G02 | Full Ovation upgrade with current controllers | Needs Adaptation | Rewiring, FAT, logic migration and operator training |
Benchmark references
- Acceptance criterion: DPU boots from the verified configuration, comes online to the network, all configured I/O branches show healthy communication and no E or I fault LEDs remain lit
- 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.
