Description
Product Core Brief
- Model: PM825
- Order Code: 3BSE010796R1
- Brand: ABB
- Series: Advant OCS / S100
- Core Function: Processor module for ABB Advant OCS / S100 control systems
- Product Type: DCS / PLC Processor Module
- Key Specs: 24 V DC supply | Modbus / Profibus / Ethernet / CAN / DDCS communication | modular I/O expansion | industrial process control
- Condition: New Original / New Surplus (verify per listing)
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | |
| Order Code | 3BSE010796R1 |
| Product Type | Processor Module / CPU |
| Platform | ABB Advant OCS / S100 |
| Supply Voltage | 24 V DC |
| Processor | Industrial-grade processor for control task execution |
| Communication | Modbus, Profibus, Ethernet, CAN bus, DDCS |
| I/O Expansion | Supports multiple I/O modules |
| Typical Applications | Power, chemical, metallurgy, water treatment, infrastructure, process automation |
Note: Some aftermarket sources list PM825 with an MPC8250 PowerQUICC processor, 16 MB SDRAM, 8 MB Flash, 133 MHz clock, 1× Ethernet, 1× RS-232, and 2× RS-485 ports. Because no official ABB datasheet was available at the time of writing, these figures should be treated as reference-only and confirmed against the nameplate and system documentation before replacement.
Product Introduction
The ABB PM825 (3BSE010796R1) is a processor module for the ABB Advant OCS / S100 platform. It functions as a controller CPU within Advant OCS stations, exec
uting control logic, managing communication, and coordinating I/O modules for process automation applications.
The module supports 24 V DC supply and multiple industrial communication protocols, including Modbus, Profibus, Ethernet, CAN bus, and DDCS, allowing integration into existing Advant OCS networks and connection with external devices or supervisory systems. Its modular architecture enables flexible I/O expansion depending on station configuration.
For MRO buyers and system integrators maintaining legacy ABB DCS installations, PM825 is typically replaced during station rebuilds, spare-part replenishment, or when an existing Advant OCS processor fails. Because Advant OCS / S100 is a mature platform, correct identification is essential. The order code 3BSE010796R1 should be matched exactly, and compatibility with the existing rack, power supply, I/O modules, and system software must be verified before commissioning.
QA & Testing SOP
- Nameplate verification — Confirm PM825 and full order code 3BSE010796R1.
- Visual inspection — Check the module housing, connectors, PCB, and status indicators.
- Power-on test — Install into a compatible Advant OCS rack and verify normal LED status.
- Communication check — Confirm communication with the engineering workstation and connected fieldbus nodes.
- Application verification — Verify existing program download, online monitoring, and fault-free operation.
- I/O validation — Check local and remote I/O communication if connected.
- Redundancy check — If configured for redundancy, verify switchover behavior per system design.
All units ship in anti-static packaging. A test log can be provided on request when rack testing is available.
Installation Pitfalls & Guide
Confirm Advant OCS / S100 platform. PM825 3BSE010796R1 belongs to the Advant OCS / S100 family. It is not an AC800M, AC800F, AC500, or Bailey INFI 90 module.
Verify the exact order code. Always confirm 3BSE010796R1 against the existing module nameplate. Some listings may describe PM825 generically.
Do not substitute with other PM modules. PM825 is not interchangeable with PM802F, PM861, PM864, PM665, or other ABB CPUs without a full compatibility review.
Check communication settings. Modbus, Profibus, CAN, DDCS, and Ethernet parameters must match the existing station configuration.
Back up before replacement. Save the existing control application, configuration, and parameter set before removing the faulty module.
Handle as ESD-sensitive equipment. Use anti-static packaging and avoid touching connectors or PCB components.
Replacement steps:
- Back up the control application and record current alarms.
- Power down the rack if required by site procedure.
- Remove the faulty PM825 and label all connections.
- Install the replacement module and verify seating.
- Power up and check status LEDs.
- Verify communication, load the application, and confirm stable operation.
Technical FAQ
Which platform does PM825 3BSE010796R1 belong to? It is associated with the ABB Advant OCS / S100 platform.
What communication protocols does it support? It supports Modbus, Profibus, Ethernet, CAN bus, and DDCS communication.
Is PM825 the same as AC800M CPUs? No. PM825 is an Advant OCS / S100 processor, not an AC800M CPU such as PM861, PM864, or PM891.
Does it support I/O expansion? Yes. It supports modular I/O expansion within the Advant OCS / S100 system.
Is this product still in production? Advant OCS / S100 is a legacy platform. Availability is typically through surplus, refurbished, or remaining OEM stock. Confirm condition and warranty before purchase.
Do you stock single units? Yes. Single units are available for MRO replacement; multi-unit spares and project support can be quoted on request.
