Description
Key Technical Specifications
| Parameter | Typical / Verified Value |
|---|---|
| Brand | ABB |
| Model | SM811K01 |
| Part Number | 3BSE018173R1 (also listed as 32SE018173R1 in some sources) |
| Product Type | Safety CPU / Safety Supervisor Module |
| Platform | ABB AC 800M / 800xA DCS |
| Safety Rating | SIL 3 support with PM865 (1oo2 diversified architecture) |
| Processor | MPC862P, 96 MHz |
| Memory | 32 MB RAM; 4 MB Flash PROM |
| Power Supply | 24 VDC via backplane (19.2–30 VDC) |
| Power Consumption | Typical 160 mA; max 250 mA at 24 VDC |
| Digital I/O | 3 digital inputs, 2 digital outputs (safety-related, non-process) |
| Communication | CEX-bus via BC810 / TP868; redundant SM link |
| Redundancy | Supports redundant configuration with SM link synchronization |
| Hot Swap | Supported for redundant configurations |
| Operating Temperature | +5 °C to +55 °C |
| Protection Class | IP20 |
| Weight / Dimensions | ~0.6 kg; 127.5 × 185 × 59 mm |
| Certifications | SIL 3 (IEC 61508), CE, marine approvals (ABS, BV, DNV-GL, LR), cULus Class 1 Div 2 / Zone 2 |
Product Introduction
The ABB SM811K01 3BSE018173R1 is a safety CPU module used in ABB AC 800M / 800xA systems. It does not replace a standard PM865 controller; instead, it supervises it. In SIL 1–2 applications, the SM811K01 provides intelligent monitoring of the PM865. In SIL 3 applications, it forms a 1oo2 diversified architecture together with the PM865, adding an independent safety supervision layer.
This module is typically installed with a TP868 baseplate and connected through the CEX-bus infrastructure, often via a BC810 interconnect. In redundant configurations, two SM811K01 modules synchronize through a dedicated SM link, enabling hot-swap and online upgrade support. It is not a general-purpose PLC CPU, and it should not be treated as a drop-in replacement for PM86x/PM89x controllers.
QA/QC Transparency SOP
- Intake & Origin Verification: Confirm model SM811K01 and part number 3BSE018173R1 on the label. Photograph serial number, revision, firmware label, and connector condition.
- Live Functional Testing: Install in a verified AC 800M test rack with a compatible PM865 controller and TP868 baseplate. Confirm boot, LED status, CEX-bus communication, and safety supervision behavior.
- Electrical Parameter Tests: Measure 24 VDC backplane current draw. Verify no short-to-chassis, no abnormal heat rise, and stable power consumption within the 160–250 mA range.
- Firmware/Config Verification: Read firmware revision and compare it to the existing system. In redundant systems, both modules must match the approved revision and configuration.
- Final QC & Anti-Static Packaging: Label the unit with verified model, part number, revision, and test results. Seal in anti-static packaging. Any module with failed SM link, unstable CEX communication, or unknown firmware is quarantined.
Field Engineer Gotchas
- Wrong identity risk. Some listings call it a generic CPU or a fiber CEX-bus module. The correct identity is a safety supervisor CPU for -based AC 800M systems.
- Part number confusion. “32SE018173R1” appears in some surplus listings, but the standard ABB part number is 3BSE018173R1. Verify the physical label before purchase.
- Not a standalone controller. The requires a controller, TP868 baseplate, and proper CEX-bus wiring. It will not function as a replacement .
- Redundant pair matching. In redundant setups, both modules must have matching firmware and configuration. Mismatched pairs can fail to synchronize.
- SM link dependency. The dedicated synchronization link must be intact. A damaged SM link cable or connector can break redundancy even if the module powers up.
ABB SM811K01 3BSE018173R1
Application Scenarios
- SIL 3 safety supervision for ABB AC 800M controllers in chemical, oil & gas, or power generation plants.
- Redundant safety controller upgrades where an existing has failed.
- Legacy 800xA rack maintenance requiring a verified safety supervisor replacement.
- Migration planning projects where the existing safety CPU architecture must be inventoried before replacement.
FAQ
It is widely available as surplus or refurbished stock. Current lifecycle status should be confirmed with ABB or an authorized distributor.
No. The is a safety supervisor module, not a standard AC 800M controller.
What does “32SE018173R1” mean?
It appears to be a listing variant. The standard ABB part number is 3BSE018173R1. Always verify the physical nameplate.
Does it support SIL 3?
Yes, when used with a controller in a 1oo2 diversified architecture.
Does it require a special baseplate?
Yes. It is typically used with a TP868 baseplate and integrated via the CEX-bus/BC810 infrastructure.
Do you provide an OEM datasheet?
A verified OEM datasheet is not attached here. Final validation should be done against the ABB AC 800M safety manual and the physical module label.
