Description

ABB PM856AK01 Processor Unit

The ABB PM856AK01 3BSE069514R1, also cataloged as the PM856AK01 Processor Unit, operates as a dedicated hardware component for control execution, communication management, and diagnostic processing within ABB AC 800M System 800xA controller platforms.

Hardware Specifications

Parameter	Specification
Model	PM856AK01 3BSE069514R1
Brand	ABB
Product Type	CPU Processor Module
System Platform	AC 800M Controller / System 800xA
Origin	Sweden
Operating Temp	0 deg C to +55 deg C
Power Consumption	4.32 W typical, 7.2 W maximum
Supply Voltage	+24 VDC
Current Consumption	180 mA typical, 300 mA maximum
RAM Memory	16 MB application memory
Flash Memory	10.337 MB storage memory
Communication Interface	RS-232C COM port, RJ-45 female 8-pole, opto-isolated
Rated Isolation Voltage	500 VAC
Controller Family	ABB AC 800M

Industrial Control Processing and Communication Functions

The PM856AK01 processor unit manages application execution, controller diagnostics, and communication services through the AC 800M controller architecture. The module uses firmware flash compatibility functions for application storage and system management.

Furthermore, the processor supports AC 800M backplane bus communication velocity functions, allowing coordinated data exchange between controller modules and connected I/O components. The unit provides processing resources for control logic execution, event handling, and network communication tasks.

Frequently Asked Questions

Q: Does the PM856AK01 support redundant controller configurations?
A: The PM856AK01 supports AC 800M controller configurations where redundancy functions depend on the complete controller hardware arrangement and installed communication modules.

Q: What power input does the PM856AK01 require?
A: The processor unit requires a +24 VDC supply input and consumes 180 mA typical current with a maximum current consumption of 300 mA.

Q: Can the PM856AK01 communicate directly with field I/O modules?
A: The processor communicates through the AC 800M controller architecture. Field communication depends on the installed communication interfaces and connected I/O modules.

Field Installation Guidelines

Install the PM856AK01 module on the designated AC 800M controller baseplate according to ABB hardware configuration requirements.

Verify the +24 VDC supply polarity before energizing the controller system. Maintain proper cabinet grounding and separate signal wiring from high-voltage power cables to reduce electrical interference.

Use approved communication cables for the RS-232C interface and ensure connector locking mechanisms remain secured during operation. Check module status indicators after installation and confirm correct firmware compatibility before loading controller applications.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems