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Description
ABB PM862K01 AC 800M Processor Unit
The ABB 3BSE076940R1 (PM862K01), also cataloged as the PM862K01 Processor Unit, operates as a dedicated controller hardware component for application execution, I/O communication, and control task processing within ABB AC 800M automation platforms.
Hardware Specifications
Parameter
Specification
Model
PM862K01
Article Number
3BSE076940R1
Brand
ABB
Product Type
AC 800M Processor Unit
Origin
Sweden
Weight
1200 g including base
Dimensions
Width 119 mm, Height 186 mm, Depth 135 mm
Operating Temp
0 to +55 deg C
Power Consumption
5.1 W typical, 8.6 W maximum
Redundancy
No
High Integrity
No
Processor Type
MPC866
Clock Frequency
67 MHz
Performance
0.18 ms per 1000 boolean operations
Memory
32 MB
RAM Available for Application
23.521 MB
Firmware Storage
4 MB Flash PROM
Flash Memory for Storage
Yes
Power Supply
24 V DC (19.2-30 V DC)
Power Supply Current
210 mA typical, 360 mA maximum at +24 V
Backup Battery
Lithium battery, 3.6 V
Redundant Power Supply Status Input
Yes
Ethernet Channels
2
Ethernet Interface
IEEE 802.3 Ethernet, 10 Mbit/s, RJ-45 female
Control Network Protocol
MMS and IAC
Recommended Network Backbone
100 Mbit/s switched Ethernet
RS-232C Interfaces
2
COM3 Interface
RS-232C, 75-19 200 baud, RJ-45 female, RTS-CTS support
COM4 Interface
RS-232C, 9600 baud, RJ-45 female, opto isolated
CEX Bus Communication Modules
12
Maximum CEX Bus Supply Current
2.4 A
Modulebus I/O Capacity
Maximum 96 I/O modules with single PM862
Modulebus Scan Rate
0-100 ms depending on I/O configuration
Clock Synchronization
1 ms between AC 800M controllers by CNCP protocol
Event Queue Capacity
Up to 3000 events per OPC client
Applications per Controller
32
Programs per Application
64
Diagrams per Application
128
Tasks per Controller
32
Different Cycle Times
32
Minimum Application Cycle Time
Down to 1 ms
ABB AC 800M Controller Communication and I/O Architecture
The PM862K01 uses the AC 800M controller architecture to execute application programs and exchange process data through Ethernet and Modulebus interfaces. The processor communicates with control networks through MMS and IAC protocols while supporting distributed I/O configurations.
The controller supports up to 12 CEX bus communication modules. Additionally, the Modulebus interface manages electrical and optical I/O clusters according to the installed CPU configuration. A single PM862K01 supports up to 96 I/O modules, while redundant PM862 configurations support up to 84 I/O modules.
The firmware storage uses Flash PROM technology, which provides compatibility with AC 800M controller software environments. The internal real-time clock maintains synchronization performance with approximately 100 ppm stability.
Firmware Flash Compatibility and Industrial Control Processing
The PM862K01 incorporates firmware flash storage and MPC866 processor technology for AC 800M automation control tasks. The processor executes cyclic application programs with configurable task scheduling and supports deterministic communication through Ethernet and Modulebus interfaces.
The controller architecture supports firmware-based configuration management, application storage, and controller diagnostics. Furthermore, the backplane and communication structure provide controlled data exchange between processor functions, communication modules, and connected I/O systems.
Frequently Asked Questions
Q: Does the PM862K01 support redundant CPU operation? A: The PM862K01 hardware is specified as non-redundant. Redundant configurations require compatible redundant controller arrangements and supported AC 800M system components.
Q: What communication interfaces are integrated into the PM862K01? A: The controller includes two Ethernet channels and two RS-232C interfaces. Ethernet uses IEEE 802.3 communication with RJ-45 connections.
Q: What is the maximum I/O capacity of a single PM862K01 controller? A: A single PM862K01 supports up to 96 I/O modules through the Modulebus interface, depending on system configuration.
Field Installation Guidelines
Install the PM862K01 on the designated AC 800M controller base plate and verify correct mechanical locking before applying power.
Use shielded communication cables for Ethernet and serial connections where required by the installation environment. Maintain separation between signal wiring and high-current power conductors to reduce electromagnetic interference.
Verify the 24 V DC supply polarity before connection. Confirm grounding and protective bonding according to industrial control cabinet standards.
Before commissioning, check controller firmware compatibility, application configuration, communication module addressing, and connected I/O module status through the engineering environment.
