The ABB PM851AK01 3BSE066485R1, also cataloged as the PM851AK01 Processor Module, operates as a dedicated hardware component for control task execution and application logic processing within ABB AC800M platforms.

Hardware Identification & Execution Capacity

The PM851AK01 processor module utilizes an MPC860 processor core to manage real-time tasks, logic programs, and backplane bus synchronization. Design parameters are cataloged below:

• Module Designation: PM851AK01

• Spare Part Code: 3BSE066485R1

• Processor Type: MPC860

• Applications per Controller: 32

• Programs per Application: 64

• Diagrams per Application: 128

• Tasks per Controller: 32 (down to 1 ms cycle time)

Hardware Specifications

Industrial Controller Architecture & Firmware Execution

The PM851AK01 controller executes application tasks down to 1 ms cycle intervals across 32 distinct timing loops. Embedded logic relies on 2 MB Flash PROM memory to ensure strict firmware flash compatibility across backplane bus communication velocity Licences. Real-time system coordination links seamlessly with Profinet / EtherNet/IP deterministic networks, maintaining deterministic signal execution across distributed I/O modules.

Shipment Items Checklist

• 1 x ABB PM851AK01 3BSE066485R1 Processor Module

• 1 x Baseplate Latch Locking Mechanism

• 1 x ESD Protective Envelope

Installation & System Mounting Rules

• Auxiliary Power Isolation

  • Disconnect external 24 VDC auxiliary power feeds prior to attaching or removing the processor from the module bus base.

• Baseplate Interlocking

  • Slide the processor module vertically onto the TP830 baseplate until sliding locks click firmly into mechanical alignment.

• Shield & Grounding Setup

  • Ensure cabinet DIN rails connect directly to the main station protective earth bus with low-impedance copper conductors.

• Signal Cable Spacing

  • Maintain a minimum separation distance of 200 mm between communication network lines and high-voltage power cables.

Frequently Asked Questions

• Q: What is the primary supply voltage requirement for the PM851AK01 processor module?

  A: The module operates on a nominal 24 VDC supply with an allowable operational input voltage range from 19.2 VDC to 30.0 VDC.

• Q: How much current and power does the module draw under full load conditions?

  A: Current draw ranges from 180 mA typical to 300 mA maximum at 24 VDC, resulting in maximum power dissipation of 7.2 W.

• Q: What processor architecture and flash memory size are integrated on board?

  A: The module is driven by an MPC860 processor core and includes 2 MB of Flash PROM dedicated to firmware storage.

• Q: Can this CPU module be hot-swapped while the baseplate bus remains energized?

  A: No, auxiliary power must be completely isolated before inserting or removing the processor to prevent backplane bus errors.

• Q: What is the fastest application cycle time supported by the execution engine?

  A: The internal real-time task scheduler can execute application programs with cycle times scaled down to 1 ms.

• Q: How many applications and tasks can be configured within a single controller unit?

  A: The module handles up to 32 applications, 64 programs per application, and up to 32 independent tasks per controller.

• Q: How does firmware flash compatibility affect module replacement?

  A: Matching firmware revisions between Flash PROM and control system software guarantees proper memory address mapping.

• Q: What physical package dimensions and total item weight apply to shipment?

  A: The unit weighs 0.9 kg with boxed transport package dimensions measuring 12.7 cm by 20.3 cm by 12.7 cm.