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- Product Core Brief
- Model: ABB PM867 3BSE076356R1
- Brand: ABB
- Series: AC 800M High Integrity
- Core Function: Safety-rated process control execution
- Product Type: High Integrity processor module
- Key Specs: 64 MB RAM; 133 MHz processor; SIL 3 capable
- Condition: New Original / New Surplus
- Key Technical Specifications
| Parameter | Value |
|---|---|
| Clock frequency | 133 MHz |
| Performance (1000 bool ops) | ~0.10 ms |
| Processor type | High Integrity MPC architecture |
| RAM total | 64 MB |
| RAM for application | ~50 MB (safety certified) |
| Flash memory | 4 MB for certified firmware |
| Safety rating | SIL 3 / PL e (IEC 61508, TUV certified) |
| Redundancy | Optional simplex or dual |
| Ethernet ports | 2 x RJ45 (CN1, CN2) |
| Serial ports | 2 x RJ45 (COM3 RS-232C, COM4 isolated) |
| Power supply | 24 V DC (19.2-30 V) |
| Power consumption | 5.1 W typ / 8.6 W max |
| Operating temperature | +5 to +55 °C |
| Dimensions (W x H x D) | 119 x 186 x 135 mm |
| Weight | 1.2 kg |
| Pollution degree | 2 (IEC/EN 61131-2) |
- PM867 3BSE076356R1
- Product Introduction
The ABB PM867 3BSE076356R1 is a High Integrity processor module for AC 800M controllers in System 800xA safety applications. It runs certified safety logic alongside standard control, certified to SIL 3 without separate hardware, using dual Ethernet and serial interfaces on the baseplate.
Process safety engineers specify this when one CPU needs to handle both safety (emergency shutdowns) and normal process loops without compromising certification. The 64 MB and 133 MHz give headroom for complex safety sequences while maintaining TUV-approved integrity.
- Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No safety LED or boot failure | Dead backup battery or baseplate power | ✅ Medium | Check 3.6 V lithium battery; measure 24 V at power pins | Replace battery; cycle INIT button if power stable. |
| Safety app won’t load | CF card corrupt or safety cert mismatch | ✅ High | Verify CF firmware matches 800xA safety version; run DTMTool diagnostics | Reflash certified CF; replace PM867 if self-test fails safety RAM check. |
| Ethernet safety comms down | CNCP sync loss or IP safety partition | ✅ High | Ping safety IP; check safety network partitioning in Control Builder | Confirm safety-certified network config; test simplex mode before hardware swap. |
| Watchdog trips in safety tasks | Safety cycle overrun or proof test fail | ✅ High | Monitor safety task scan times; run proof test diagnostics | Tune safety logic; verify proof test interval before blaming CPU. |
| COM3/4 unresponsive for config | Isolation fault or baud mismatch | ✅ Low | RJ45 loopback test; match safety manual comms settings | Use certified config cable; test COM4 isolation separately. |
| Frequent safety mode trips | Input proof test fail or sensor wiring | ✅ Medium | Check safety input diagnostics; verify field device health | Validate sensors first; reload safety app only after field fix. |
| Module exceeds +55 °C case temp | Cabinet ventilation or derating needed | ✅ Low | Measure ambient; check for adjacent heat sources | Improve airflow; derate safety tasks if near limit. |
| Firmware safety validation fail | Non-certified CF or HW/SW mismatch | ✅ High | Note exact error; compare against safety manual cert list | Use only ABB-approved CF image; full cold start after firmware reload. |
Document safety proof test logs, LED states, and Control Builder safety diagnostics before support contact—certified systems need audit trail.
- Frequently Asked Questions (FAQ)
Q1: What differentiates PM867 3BSE076356R1 from standard PM86x CPUs?
This is the High Integrity version with SIL 3 certification built into the hardware and firmware stack. Runs safety-rated and normal apps on one module—no separate safety PLC needed, but requires certified config practices per the safety manual.
Q2: Does PM867 support redundant operation?
Yes, simplex or dual-channel redundancy via RCU-Link like other PM86x. Safety apps require specific proof testing and sync validation—backup both CF cards identically before pairing.
Q3: Minimum 800xA version for safety certification?
Needs 800xA 6.0+ with safety patches. Older systems need full firmware upgrade on CF—mismatched versions void SIL 3 cert and throw validation errors on startup.
Q4: Hot-swap capability in safety-rated process?
No live swaps in certified loops. De-energize baseplate 24 V, wait discharge, insert spare. Standby safety CPU covers if RCU synced; proof test after resync mandatory.
Q5: Safety proof test interval and coverage?
Per IEC 61508, annual proof test minimum for SIL 3—covers CPU self-tests, RAM, and safety I/O response. Documented procedure in ABB safety manual; failure resets cert clock.
Q6: New Surplus PM867 safety concerns?
No issue if from reputable channel—OEM hardware carries same cert. Verify CF has current safety firmware, run full self-test, and complete initial proof test before commissioning.
Q7: Warranty coverage for certified HI applications?
12 months functional, plus safety cert validation test. Expect bench proof test showing SIL 3 self-tests pass, safety app load, and network comms before shipment. Match serials to cert report.
