ABB PM864AK01 Processor Unit

Data Sheet

General Information

  • Product ID:
  • ABB Type Designation:
  • Catalog Description:
    PM864AK01 Processor Unit


  • Number of Processors:
  • CPU Clock Frequency:
    96 MHz
  • Memory Size:
    32 MB
  • Technical Information:
    96MHz and 32MB.
    Package including:
    – PM864A, CPU
    – TP830, Baseplate
    – TB850, CEX-bus terminator
    – TB807, ModuleBus terminator
    – TB852, RCU-Link terminator
    – Battery for memory backup (4943013-6)
    – No license included
    Include the following text: Note! This part is not RoHS 2 2011/65/EU
    compliant. This is a spare part for systems placed on the market before
    July 22, 2017 and may only be ordered for repair, reuse, updating of
    functionalities or upgrading of capacity.
    For new installations, please order PM866AK01 instead.


  • Product Net Weight:
    1.2 kg


  • Country of Origin:
    Sweden (SE)
  • Customs Tariff Number:

We focus on industrial automation and process instrument over 20 years

ABB PM864AK01 Processor Unit

The CPU board contains the microprocessor and RAM memory, a real-time clock, LED
indicators, INIT push button, and a CompactFlash interface.

The base plate of the PM864A controller has two RJ45 Ethernet ports (CN1, CN2) for connection to the Control Network, and two RJ45 serial ports (COM3, COM4). One of the serial ports (COM3) is an RS-232C port with modem control signals, whereas the other port (COM4) is isolated and used for the connection of a configuration tool. The controller supports CPU redundancy for higher availability (CPU, CEX-Bus, communication interfaces and S800 I/O).

Simple DIN rail attachment / detachment procedures, using the unique slide & lock mechanism. All base plates are provided with a unique Ethernet address which provides every CPU with a hardware identity. The address can be found on the Ethernet address label attached to the TP830 base plate.

General info
Article number 3BSE018161R1 (PM864AK01)
Redundancy No
High Integrity No
Clock Frequency 96 MHz
Performance, 1000 boolean operations 0.15 ms
Performance 0.15 ms
Memory 32 MB
RAM available for application 23.522 MB
Flash memory for storage Yes
Height 196 mm (7.3 in)
Width 119 mm (4.7 in.)
Depth 135 mm (5.3 in.)
Weight 1200 g (2.6 lbs)
Detailed data
Processor type MPC862
Switch over time in red. conf. max 10 ms
No. of applications per controller 32
No. of programs per application 64
No. of diagrams per application 128
No. of tasks per controller 32
Number of different cycle times 32
Cycle time per application programs Down to 1 ms
Flash PROM for firmware storage 2 MB
Power supply 24 V DC (19.2-30 V DC)
Power consumption +24 V typ/max 287/487 mA
Power dissipation typ. 6.9 W (11.4 W max)
Redundant power supply status input Yes
Built-in back-up battery Lithium, 3.6 V
Real-time clock stability 100 ppm (approx. 1 h/year)
Clock synchronization 1 ms between AC 800M controllers by CNCP protocol
Event queue in controller per OPC client Up to 3000 events
AC 800M transm. speed to OPC server 36-86 events/sec ,113-143 data messages/sec
Comm. modules on CEX bus 12
Supply current on CEX bus Max 2.4 A
I/O clusters on Modulebus with non-red. CPU 1 electrical + 7 optical
I/O clusters on Modulebus with red. CPU 0 eletrical + 7 optical
I/O capacity on Modulebus Max 96 (single PM864A) or 84 (red. PM864A) I/O modules
Modulebus scan rate 0 – 100 ms (actual time depending on number of I/O modules)
Supply current on Electrical Modulebus 24 V : max 1.0 A
5 V : max 1.5 A
Ethernet channels 2
Ethernet interface Ethernet (IEEE 802.3), 10 Mbit/s, RJ-45, female (8-pole)
Control Network protocol MMS (Manufacturing Message Service) and IAC (Inter Application Communication)
Recommended Control Network backbone 100 Mbit/s switched Ethernet
RS-232C interface 2 (one general, 1 for service tool)
RS-232C interface (COM3) (non red. only) 75-19 200 baud, RJ-45 female (8-pole), not opto isolated, full RTS-CTS support Not
RS-232C interface (COM4) (non red. only) 9 600 baud, RJ-45 female (8-pole), opto isolated, no RTS-CTS support