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Contact: POWER DUKE
Phone: +86 18059884790
E-mail: plc66@qq.com
Add: fujian xiamen
- Part number：PM866AK02 3BSE081637R1
- Warehouse: Spot
- Warranty： 365 days
- Quality: Original module
- Condition： New
- Shipping method: Courier delivery
- Contact person: LI MING
- Contact number: +86 18059884790
- WeChat：18059884790
- E-mail: plc66@qq.com
Product Model: PM866AK02 (3BSE081637R1) Redundant Processor Unit
1. Product Description
PM866AK02 with part code 3BSE081637R1 is a high-performance redundant main processor unit developed for ABB AC 800M distributed control system. This rack-mounted CPU module adopts dual redundant hot standby architecture, equipped with high-speed processing chip, built-in program memory and multiple communication interfaces. It supports seamless master-slave switching without system interruption, provides comprehensive hardware circuit protection, wide operating temperature range and strong anti-electromagnetic interference capability, fully complying with industrial safety standards for continuous 24/7 critical process control.
133MHz and 64MB.Package including:-
2 pcs PM866A, CPU
- 2 pcs TP830, Baseplate
- 2 pcs TB807, ModuleBus terminator
- 1 pcs TK850, CEX-bus extension cable
- 1 pcs TK851, RCU-Link cable
- 2 pcs Battery for memory backup ( 4943013-6 )- No license included.
2. Core Product Functions
- Execute control logic, sequence programs and closed-loop PID regulation of the whole automation station
- Redundant hot backup operation, automatic fault switch between primary and standby CPU
- Real-time data interaction with all I/O modules via control bus
- Communicate with HMI, upper SCADA system and third-party field devices
- Built-in hardware self-diagnosis to detect CPU, memory and communication channel faults
- Store process parameters, control programs and historical event logs
Upload fault alarms and diagnostic information to monitoring system automatically
3. Application Scenarios
- Petrochemical DCS process control systems requiring uninterrupted operation
- Thermal power plant boiler, turbine and auxiliary equipment control cabinets
- Metallurgy smelting, rolling mill continuous production control stations
- Water supply, sewage treatment and desalination automation projects
- Natural gas pipeline transmission and pressure regulating station control systems
Pharmaceutical, food processing and energy storage industrial control systems
4. Common Problems & Troubleshooting
Q1: Redundancy switch failure, primary and standby CPU cannot synchronize data
A: Check redundant communication cable connection status; clean gold finger contacts of two processor units; reload station configuration program and restart the control rack.
Q2: CPU module run light flashes red with system crash alarm
A: Inspect module overheating caused by cabinet dust accumulation; verify stable 24VDC power input; check for program logic overflow or illegal variable address error.
Q3: Processor loses communication with I/O modules frequently
A: Check backplane slot aging or loose contact; separate control bus cables from high-power cables to avoid EMI interference; replace damaged backplane bus connector.
Q4: Automatic switching fails when main CPU breaks down
A: Confirm both CPUs run identical firmware versions; check redundant power supply loop integrity; clear fault logs and perform full station redundancy synchronization again.
