Description
Product Core Brief
- Model: PM802F
- Order Code: 3BDH000002R1
- Brand: ABB
- Series: AC800F / Freelance
- Core Function: Main processor unit (CPU) for ABB AC800F distributed control systems
- Product Type: DCS CPU Module / Controller Main Unit
- Key Specs: 32-bit RISC CPU | 8 MB program memory | supports controller/power/network redundancy | Control Builder F engineering | PROFIBUS DP, Foundation Fieldbus, Modbus communication
- Condition: New Original / New Surplus (verify per listing)
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | |
| Order Code | 3BDH000002R1 |
| Product Type | AC800F CPU / Main Processor Unit |
| Platform | ABB AC800F / Freelance |
| CPU | 32-bit superscalar RISC processor (Intel 80960HD, 75 MHz, 150 MIPS) |
| Program Memory | 8 MB (PM802F standard; PM803F provides 16 MB) |
| Data Memory | 4 MB static RAM with battery retention (SRAM) |
| Error Correction | EDC unit — corrects 1-bit errors, detects 2-bit errors per 32-bit word |
| Redundancy | Controller, power supply, and network redundancy with zero switchover time |
| Communication | PROFIBUS DP, Foundation Fieldbus HSE, Modbus RTU/ASCII, IEC 60870-5, CAN bus |
| Slot Configuration | 1× power slot (P), 2× Ethernet slots (E1/E2), 4× fieldbus slots (F1–F4) |
| Data Bus Bandwidth | 100 MB/s |
| Engineering Software | Control Builder F (CBF), IEC 61131-3 compliant |
| Operating Temperature | 0 °C to 60 °C |
| Typical Power Consumption | 6 W (max 7.8 W) |
Note: Some aftermarket sources list PM802F memory as 4 MB, while others specify 8 MB. ABB documentation distinguishes PM802F (8 MB) from PM803F (16 MB). Always confirm the nameplate and firmware version before replacement.
Product Introduction
The ABB PM802F (3BDH000002R1) is the main processor unit for the ABB AC800F controller platform, used within the Freelance distributed control system. It serves as the central processing unit for AC800F stations, executing control logic, managing fieldbus communication, and coordinating I/O processing for continuous, batch, and hybrid process applications.
Built around a 32-bit superscalar RISC processor running at 75 MHz, the PM802F delivers up to 150 MIPS of computing performance. Its modular backplane design includes two high-speed DMA Ethernet slots (E1/E2) for TCP/IP-based control network communication and four fieldbus slots (F1–F4) for PROFIBUS DP, Foundation Fieldbus, Modbus, and other protocol modules. The CPU board data bus bandwidth of 100 MB/s ensures rapid data exchange between communication modules and the processor.
The PM802F features 8 MB of program memory and 4 MB of battery-backed static RAM for data retention during power loss. An integrated EDC (Error Detection and Correction) unit can correct single-bit errors and detect double-bit errors in 32-bit data words, improving data reliability in harsh industrial environments. The module supports full redundancy — controller, power supply, and network — with zero switchover time, making it suitable for critical process applications where uptime is essential.
For MRO buyers and system integrators maintaining legacy AC800F / Freelance installations, PM802F is typically replaced during controller upgrades, panel rebuilds, spare-part replenishment, or when an existing station experiences CPU faults, communication loss, or memory errors. Because AC800F is a mature platform, correct identification is essential. The order code 3BDH000002R1 should be matched exactly, and compatibility with the existing rack, power module, Ethernet modules, and fieldbus modules must be verified before commissioning.
QA & Testing SOP
- Nameplate verification — Confirm PM802F and full order code 3BDH000002R1.
- Visual inspection — Check the module housing, backplane connectors, Ethernet/fieldbus slots, and status LEDs for physical damage or corrosion.
- Battery check — Verify the SRAM backup battery (3.6 V lithium) is installed and within voltage range.
- Power-on test — Install into a compatible AC800F rack with the correct power module and verify normal LED status.
- Communication check — Confirm communication with the Control Builder F engineering station via Ethernet.
- Program load test — Verify existing application download, online monitoring, and fault-free operation.
- Redundancy verification — If configured for redundancy, confirm 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 it is AC800F, not AC800M or Advant OCS. PM802F belongs to the AC800F / Freelance platform. It is not interchangeable with AC800M PM8xx CPUs, Advant OCS PM5xx/PM6xx modules, or AC500 PLCs.
Match the memory variant. PM802F provides 8 MB program memory. PM803F (3BDH000530R1) provides 16 MB and requires different power and Ethernet modules. Do not substitute without verifying compatibility.
Verify power module compatibility. PM802F pairs with SA801F (non-redundant) or SD802F (redundant) power modules. PM803F requires SA811F or SD812F.
Check Ethernet module type. E1/E2 slots require EI801F/EI802F/EI803F modules for PM802F. PM803F uses EI811F/EI812F/EI813F.
Back up before replacement. Save the existing control application, configuration, and parameter set via Control Builder F 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 PM802F and label all connections.
- Install the replacement module and verify seating in the rack.
- Power up and check status LEDs.
- Verify communication via Control Builder F, load the application, and confirm stable operation.
Technical FAQ
What is the order code for PM802F? The factory order code is 3BDH000002R1.
How is PM802F different from PM803F? PM802F has 8 MB program memory and uses SA801F/SD802F power modules and EI80xF Ethernet modules. PM803F has 16 MB memory and requires SA811F/SD812F power modules and EI81xF Ethernet modules.
Does PM802F support redundancy? Yes. It supports controller redundancy, power supply redundancy, and network redundancy with zero switchover time.
Which software is used for programming? ABB Control Builder F (CBF), supporting IEC 61131-3 languages including FBD, LD, IL, ST, and SFC.
What communication protocols does it support? PROFIBUS DP, Foundation Fieldbus HSE, Modbus RTU/ASCII, IEC 60870-5-101/104, and CAN bus for Freelance rack I/O.
Is this product still in production? AC800F is a mature 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.
