ABB PM866AK02/ PM866K02 Ethernet IO Module ABB Redundant Processor
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 PM866 / PM866A 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.
Package including:
2 pcs PM866A, CPU
2 pcs TP830, Baseplate, width =115mm
2 pcs TB807, ModuleBus terminator
1 pcs TK850, CEX-bus expansion cable
1 pcs TK851, RCU-Link cable
2 pcs Battery for memory backup (4943013-6) 1 for each CPU

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Processor type | MPC866 |
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 | 4 MB |
Power supply | 24 V DC (19.2-30 V DC) |
Power consumption +24 V typ/max | 210 / 360 mA |
Power dissipation | 5.1 W (8.6 W max) |
Redundant power supply status input | Yes |
Built-in back-up battery | Lithium, 3.6 V |
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 PM866) or 84 (red. PM866) 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 |
Real-time clock stability | 100 ppm (approx. 1 h/year) |
RS-232C interface | 2 (one general, 1 for service tool) |
RS-232C interface (COM3) (non red. only) | RS-232C, 75-19 200 baud, RJ-45 female (8-pole), not opto isolated, full RTS-CTS support |
RS-232C interface (COM4) (non red. only) | RS-232C, 9 600 baud, RJ-45 female (8-pole), opto isolated, no RTS-CTS support |
Temperature, Operating | +5 to +55 °C (+41 to +131 °F) |
Temperature, Storage | -40 to +70 °C (-40 to +158 °F) |
Temperature changes | 3 °C/minutes according to IEC/EN 61131-2 |
Pollution degree | Degree 2 according to IEC/EN 61131-2 |
Corrosion protection | G3 compliant to ISA 71.04 |
Relative humidity | 5 to 95 %, non-condensing |
Emitted noise | < 55 dB (A) |
Vibration | 10 < f < 50 Hz: 0.0375 mm amplitude, 50 < f < 150 Hz: 0.5 g acceleration, 5 < f < 500 Hz: 0.2 g acceleration |
Rated Isolation Voltage | 500 V a.c. |
Dielectric test voltage | 50 V |
Protection class | IP20 according to EN 60529, IEC 529 |
Altitude | 2000 m according to IEC/EN 61131-2 |
Emission & Immunity | EN 61000-6-4, EN 61000-6-2 |
Environmental conditions | Industrial |
CE Mark | Yes |
Electrical Safety | EN 50178, IEC 61131-2, UL 61010-1, UL 61010-2-201 |
Hazardous location | UL 60079-15, cULus Class 1, Zone 2, AEx nA IIC T4, ExnA IIC T4Gc X |
ISA Secure certified | Yes |
Marine certificates | DNV-GL (currently PM866: ABS, BV, DNV-GL, LR) |
TUV Approval | No |
RoHS compliance | EN 50581:2012 |
WEEE compliance | DIRECTIVE/2012/19/EU |
Width | 119 mm (4.7 in.) |
Height | 186 mm (7.3 in.) |
Depth | 135 mm (5.3 in.) |
Weight (including base) | K01 1200 g (2.6 lbs) / K02 2700 g (5.95 lbs) |


Contact Person:
Florence Cheung,
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