Overview
Manuals
Dual Safety Units
128-Signal Boundary
Redundant Link Setup
Features:
- 3BSE088386R1 identifies the two-unit PM857K02 package; each PM857 CPU retains its own 96 MHz processor and 22.184 MB application-memory limit.
- The High Integrity design is certified for SIL3 use when configured under ABB's Safety Manual and the stated 800xA 6.1 with Control Builder Safe 3 and later engineering environment.
- CPU redundancy is supported with a maximum 10 ms switchover; the redundant layout uses 7 optical clusters and the complete kit or matching partner hardware must be verified.
PM857K02 3BSE088386R1 is an ABB AC 800M redundant high integrity processor kit built around the PM857 CPU. Its MPC866 runs at 96 MHz with 32 MB RAM and 22.184 MB available to the application. The K02 order combines two PM857 processors with the documented CEX/RCU link hardware. Performance and memory limits apply to each CPU and are not pooled. ABB classifies the CPU as a High Integrity controller for SIL3 safety and combined control-and-safety configurations. Certified use requires the associated safety module, approved libraries and engineering restrictions described in the Safety Manual. The 24 VDC processor supports up to 12 CEX-bus modules. Local I/O uses 1 electrical + 7 optical clusters in single operation and 7 optical in a redundant arrangement, subject to 96 / 84 modules; maximum 128 I/O signals. Control Network communication is provided through 2 x 10 Mbit/s RJ45 per CPU using MMS and IAC. Selection must preserve 800xA 6.1 with Control Builder Safe 3 and later, the installed project, CPU generation, partner hardware and bus topology.
ABB AC 800M Controller and Communication Interfaces, 3BSE063691, and the current ABB System 800xA product catalog. Values apply to the stated CPU and package configuration.
The ABB PM857K02 3BSE088386R1 is supported by Moore Automated for exact-item replacement and spare-part enquiries.
ABB PM857K02 3BSE088386R1 Redundant High Integrity processor kit manual(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB identifies PM857K02 3BSE088386R1 as a two-processor order: two PM857K01 Safety processor units with TK850 and TK851 link cables; no license. Confirm both CPU labels and the cable/terminator inventory before treating an offered set as complete.
Each PM857 CPU uses a 96 MHz MPC866 with 32 MB RAM and 22.184 MB application space. The 0.17 ms Boolean benchmark is not the complete process-loop response time.
The processor accepts up to 12 CEX-bus modules and uses 1 electrical + 7 optical clusters in single operation. The redundant layout is 7 optical; apply the 96 / 84 modules; maximum 128 I/O signals limit and verify 800xA 6.1 with Control Builder Safe 3 and later.
