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Phone: +86 16626708626Description
- Product Core Brief
- Model: ABB PM862AK02
- Brand: ABB
- Series: AC 800M High Performance
- Core Function: Redundant process control execution
- Product Type: Processor module (redundant kit)
- Key Specs: 32 MB RAM; 67 MHz MPC866; 0.18 ms/1000 bool ops
- Condition: New Original / New Surplus
- PM862AK02
- Key Technical Specifications
| Parameter | Value |
|---|---|
| Clock frequency | 67 MHz |
| Performance (1000 bool ops) | 0.18 ms |
| Processor type | MPC866 |
| RAM total | 32 MB |
| RAM for application | 23.521 MB (800xA 5.1+) |
| Flash memory | 4 MB for firmware |
| Redundancy | Yes (<10 ms switchover) |
| High Integrity | No |
| 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 | 210/360 mA typ/max @ 24 V |
| Operating temperature | 0 to +55 °C |
| Dimensions (W x H x D) | 119 x 186 x 135 mm |
| Weight | 1.1 kg (per CPU, incl. baseplate) |
| CEX bus modules | Max 12 |
- Product Introduction
The ABB PM862AK02 is a redundant processor module kit for AC 800M controllers in System 800xA DCS. It includes dual CPUs with TP830 baseplates that sync over RCU-Link for automatic failover in under 10 ms, running high-speed logic and I/O coordination.
Process engineers deploy this in critical loops—drives, batch, or utilities—where 32 MB RAM and 67 MHz handle dense applications without scan misses. Outpaces PM858 while keeping the same redundant footprint and CEX bus layout.
- Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No boot LED on primary CPU | Dead battery or baseplate power drop | ✅ Medium | Check 3.6 V lithium battery; measure 24 V at TP830 terminals | Swap battery first; cycle power if voltage stable but no INIT response. |
| RCU-Link sync lost / failover fail | TK851 cable damage or config mismatch | ✅ High | Inspect RCU-Link LEDs green; swap cable; verify Control Builder pair settings | Resync CPUs via DTMTool; test manual switchover before hardware blame. |
| App load hangs on standby | CF firmware mismatch or RAM fault | ✅ High | Compare CF serials; run memory diagnostics on both units | Match firmware versions; replace kit if standby self-test fails load. |
| Dual Ethernet ports dark | Control Network IP clash or switch fault | ✅ Medium | Ping CN1/CN2 IPs separately; check sync status | Confirm network config; reload app if one CPU offline. |
| Frequent watchdog resets | Cycle time overrun or power noise | ✅ High | Track task loads in diagnostics; scope 24 V ripple | Rebalance tasks across 32 slots; clean power before full kit swap. |
| Serial ports dead | Wrong baud or RTS/CTS handshake issue | ✅ Low | RJ45 loopback test; match DTMTool settings | Verify cable pinout; test isolated COM4 separately. |
| CEX bus scan lag | Modulebus overload (>84 modules) | ✅ Medium | Monitor Modulebus current (1 A limit); check extender health | Add BC810/820 pairs; prune I/O if pushing redundant limits. |
| Unexplained failovers under load | Sync cable EMI or battery low | ✅ High | Route TK851 away from VFDs; test failover with 100% CPU load | Shield RCU-Link; replace batteries yearly regardless of indicator. |
Capture LED states, RCU status, and Control Builder diagnostics screen—support can spot 80% of issues from photos alone.
- Frequently Asked Questions (FAQ)
Q1: What makes up the full ABB PM862AK02 redundant kit?
Two PM862 CPUs, two TP830 baseplates (119 mm width), two TB807 terminators, TK850 CEX extender, TK851 RCU-Link cable, and two 3.6 V lithium batteries. DIN-rail mounts as a ready pair.
Q2: Drop-in upgrade from PM858K02 or PM856?
Same baseplate and CEX layout—backup app, cold start pair, reload identical CF firmware, wire RCU-Link. Test failover confirms sync in under an hour. Faster clock justifies the swap in dense racks.
Q3: 800xA version compatibility for PM862AK02?
Needs 800xA 5.1 FP4+ or Compact Control Builder 6.0+. Mismatched CF throws boot errors—update both CPUs to latest patch before resync.
Q4: Live swap during process upset?
Cut 24 V to baseplate first—standby CPU covers seamlessly if RCU-Link solid. Hot insert risks bus glitch or app corruption; plan the 5-minute window.
Q5: I/O capacity before bus extenders needed?
84 optical Modulebus modules max in redundant mode (7 clusters). Dense S800 setups hit this quick—budget BC810/820 early for growth.
Q6: Surplus PM862AK02 vs. factory order difference?
Pulls from panel upgrades or bulk spares—OEM quality, skips 12-week factory queue. Bench verifies dual boot, Ethernet, and RCU sync prior to ship.
Q7: Warranty scope on New Surplus kits?
12 months full kit coverage after test: power cycle, app load, network link, manual failover pass. Serial-matched report confirms both CPUs match spec.
