ABB PM866AK01 3BSE076939R1 AC 800M High-Performance Processor Unit

Product Overview

The ABB PM866AK01 (3BSE076939R1) is a high-performance Processor Unit Kit for the AC 800M controller family. It includes the PM866A processor and TP830 baseplate, offering approximately 1.4× the performance of PM864 for demanding DCS and PLC applications.

Key Specifications

• Manufacturer: ABB
• Part Number: PM866AK01 (3BSE076939R1)
• Product Type: AC 800M Processor Unit Kit
• CPU: MPC866 @ 133 MHz
• Memory: 64 MB SDRAM, 4 MB Flash PROM
• Performance: ~1.4× PM864 / ~2.8× PM860
• System: AC 800M / System 800xA
• Baseplate: TP830 included
• Communication: 2× RJ45 Ethernet, RS-232C, ModuleBus, CEX-Bus
• Redundancy: CPU redundancy supported
• Power Supply: 24 V DC (19.2–30 V DC)
• Dimensions: 119 × 186 × 135 mm

Applications

• Large-scale process automation
• High-speed batch control
• Safety-critical applications (with SM811/SM812)
• Complex multi-loop control strategies

FAQ

Q: What is the difference between PM866 and PM866A?
A: PM866A is equivalent to PM866. The "A" suffix denotes a revision level with identical functional specifications.

Q: Can PM866AK01 be paired with High Integrity (HI) modules?
A: PM866A supports S800 I/O High Integrity. For SIL2/SIL3 applications, use PM865 or PM867 with SM810/SM811/SM812.

Q: How many I/O modules can be connected?
A: Up to 12 S800 I/O modules on the electrical ModuleBus and up to 7 clusters (84 modules) on the optical ModuleBus.

Installation Guide

1. Mount TP830 baseplate on DIN rail.
2. Seat PM866A processor onto baseplate and secure.
3. Wire 24 V DC power; configure redundant power monitoring if applicable.
4. Connect control network Ethernet to CN1/CN2.
5. Install CEX-Bus modules (CI854, CI867, etc.) for fieldbus expansion.
6. Initialize with Control Builder M and verify CPU diagnostics LEDs.

Selection Tips

• Select PM866AK01 when application size exceeds PM864 capacity or faster scan times are needed.
• For redundant CPU pairs, order PM866AK02.
• Verify software version compatibility (System 800xA 5.1 SP2 or later recommended).
• Consider PM891 for highest performance (~3× PM864).