ABB PM857K01 3BSE088385R1 High Integrity Processor Unit · 96 MHz
ABB PM857K01 3BSE088385R1 High Integrity Processor Unit · 96 MHz
High Integrity processor unit for AC 800M safety control architectures, with S800 I/O High Integrity support and 800xA High Integrity engineering.
AC 800M High Integrity processor
PM857K01 is an ABB AC 800M High Integrity processor unit with a 96 MHz MPC866 processor, 32 MB memory and a maximum capacity of 128 I/O signals.
Technical specifications
Processor & memory
| Processor type | MPC866 |
| Clock frequency | 96 MHz |
| Memory | 32 MB |
| RAM available for application | 22.184 MB |
| Flash PROM firmware storage | 18 MB |
| Performance, 1000 boolean operations | 0.17 ms |
| Applications / controller | 32 |
| Programs / application | 64 |
| Diagrams / application | 128 |
| Tasks / controller | 32 |
| Different cycle times | 32 |
| Cycle time per application program | 10 ms |
Power & I/O
| Power supply | 24 V DC (19.2–30 V DC) |
| Power consumption +24 V | 210 / 360 mA typ./max. |
| Power dissipation | 5.1 W / 8.6 W max. |
| Redundant power supply status input | Yes |
| Built-in backup battery | Lithium, 3.6 V |
| I/O capacity | Maximum 128 I/O signals |
| Communication modules on CEX bus | 12 |
| CEX bus supply current | Maximum 2.4 A |
| ModuleBus clusters | 1 electrical + 7 optical |
| ModuleBus I/O modules | Maximum 96 with non-redundant CPU |
Communication
| Ethernet channels | 2 |
| Ethernet interface | IEEE 802.3, 10 Mbit/s, RJ-45 |
| Control Network protocol | MMS and IAC |
| Control Network backbone | Recommended 100 Mbit/s switched Ethernet |
| RS-232C interfaces | 2 |
| COM3 | 75–19,200 baud, non-isolated, RTS-CTS |
| COM4 | 9,600 baud, opto-isolated, no RTS-CTS |
| Clock synchronization | 1 ms between AC 800M controllers by CNCP |
Environment & certification
| Operating temperature | 0 to +55 °C |
| Storage temperature | −40 to +70 °C |
| Relative humidity | 5–95%, non-condensing |
| Protection class | IP20 |
| Pollution degree | 2 |
| Corrosion protection | G3 per ISA 71.04 |
| Altitude | 2000 m |
| Rated isolation voltage | 500 V AC |
| Dimensions | 119 × 186 × 135 mm |
| Weight including base | 1200 g |
| Safety certification | TÜV certified SIL2 and SIL3 |
| Hazardous location | cULus Class 1, Zone 2; AEx nA IIC T4 / Ex nA IIC T4Gc X |
| Marine certificates | ABS, BV, DNV-GL |
Compatibility & replacement
Safety control architecture
Control Network
Ethernet communication with the AC 800M control environment.
PM857K01
Executes the configured High Integrity control application.
I/O & CEX
Connects associated communication and S800 I/O architecture.
Emergency shutdown
ESD / PSD control functions in process safety architectures.
Fire & Gas
Safety control applications requiring High Integrity operation.
Critical control
Interlock, burner management and other safety-related control functions.
Processor fault
Check controller status, diagnostics and application execution before replacing hardware.
Communication fault
Check Ethernet, CEX bus and connected communication modules according to the installed architecture.
I/O fault
Check ModuleBus configuration and S800 I/O diagnostics before changing the processor.
Supply & service
PM857K01 buyer FAQ
Is PM857K01 the same as PM857K02?
Does PM857K01 support S800 I/O High Integrity?
Where can I check the PM857K01 technical details?
What information should I send for a quotation?
PM857K01 availability
Send the part number, quantity, destination and required date. If available, include the machine or control system so we can check the requested configuration.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.