Description
- ABB SM811K01 (3BSE018173R1) | IEC61508 SIL3 Certified Module With 12 Month Warranty
Product Core Brief
- Model: SM811K01, Part No. 3BSE018173R1
- Brand: ABB
- Series: AC800M / System 800xA High Integrity Safety Control
- Core Function: Acts as safety co-processor to build SIL3 1oo2 diversified safety control architecture
- Type: Safety CPU Co-Processor Module
- Key Specs: IEC 61508 SIL3 certification; paired with PM865; CEX-bus communication; redundant synchronization support
- Condition: New Original, factory sealed, non-refurbished
Product Introduction
Many process industries such as chemical plants and power stations require safety instrumented systems to avoid hazardous process trips. The ABB SM811K01 is a dedicated safety co-processor designed to operate alongside PM865 main controllers within AC800M platform.It executes independent safety logic verification and cross-checking. Combined with standard main controller, the assembly forms diversified 1oo2 safety architecture to meet SIL3 safety requirements. Synchronization cable enables data mirroring between redundant SM811K01 units for seamless failover.This hardware is a mandatory component for upgrading existing AC800M systems to high-integrity safety standards. It communicates with controller via internal CEX-bus and works with S800 safety I/O modules for complete safety loop control.
Key Technical Specifications
| Parameter Item | Technical Data |
|---|---|
| Full Part Number | SM811K01 / 3BSE018173R1 |
| Platform Compatibility | ABB AC800M, System 800xA |
| Matching Main Controller | PM865 series |
| Safety Standard | IEC 61508, SIL3 certified |
| Internal Bus | CEX-bus interconnection |
| Redundancy Support | Hot redundant configuration with TK852 synchronization cable |
| Power Supply | Supplied through base unit TP868 backplane |
| Protection Class | IP20 for cabinet internal installation |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Mounting | Plug-in module on TP868 baseplate |
| Application | Safety Instrumented Systems for process industry |

ABB SM811K01 3BSE018173R1
Installation & Configuration Guide
Stage 1: Pre-Installation Preparation (15 mins)
Coordinate site operation staff to set the safety system to maintenance mode. Cut off rack 24V DC power supply, wait 5 minutes for capacitor discharge.Prepare tools: ESD wrist strap, insulated screwdriver, digital camera, TK852 synchronization cable. Back up all safety application programs to local storage. Take clear photos of original module positions and cabling layout.⚠️ Safety reminder: Safety system modification must follow site safety management procedures.
Stage 2: Old Module Removal (12 mins)
Label synchronization cable and CEX-bus connectors before disconnection. Unlock front panel latch and extract SM811K01 horizontally. Do not twist the circuit board to avoid bending backplane pins.Inspect baseplate gold fingers; wipe away dust and oxidation with anti-static cloth. Check for signs of overheating or corrosion.
Stage 3: New Module Installation (20 mins)
Wear anti-static gear before unpacking. Confirm part number / 3BSE018173R1 matches replacement requirement.Insert module along rack guide rails and push until the latch clicks into position. Reconnect synchronization cable and internal bus wiring strictly following recorded photos.Pre-power-on self-check: Confirm full insertion, correct TX/RX connection of sync cable, no loose connectors, no stray hardware inside rack.
Stage 4: Power-On & Safety Commissioning (40 mins)
Restore rack power supply and monitor front LED indicators. Steady green RUN light indicates successful initialization.Connect Control Builder engineering software, verify module identification and firmware revision. Download backed-up safety application and compile project.Execute safety logic offline simulation first. Perform redundant switchover test if running dual SM811 configuration.Run continuous monitoring for minimum 60 minutes without safety alarms before returning the system to automatic operation.

ABB SM811K01 3BSE018173R1
Frequently Asked Questions (FAQ)
1. Can work alone without PM865 controller?No. It functions purely as safety co-processor. It must be installed and paired with PM865 main controller to run safety control algorithms. Independent operation is not supported.
2. What firmware risks exist during replacement?Mismatched firmware revisions between and PM865 will trigger bus communication alarms. Record firmware version from original unit before purchasing new hardware. Firmware upgrade requires offline safety program re-verification.
3. Is hot-swap allowed for this safety module?Hot removal is forbidden. You need to deactivate safety functions and cut rack power before replacement. Live extraction can trigger unplanned safety trips and damage backplane circuits.
4. Can be used for new projects installed after July 2017?According to ABB official documentation, is reserved as spare part for legacy systems. New safety projects need to select updated SM812 series hardware.
5. Why does redundant pair require TK852 cable?This cable provides high-speed synchronization channel. It replicates safety status and variables between primary and standby modules to achieve bumpless switchover during fault conditions.
6. What quality guarantee can be provided?We offer 12-month warranty. Every module passes power-on and communication testing before shipment. Test records and inspection photos can be provided on request.



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