中文品名：ABB PM864AK01‑eA AC800M 处理器 CPU 裸板单元

Order No: PM864AK01‑eA，物料号 3BSE018161R2

The PM864AK01‑eA 3BSE018161R2 is revised high‑performance processor bare unit for ABB AC800M DCS system, hardware revised version of PM864AK01(3BSE018161R1), core control hardware for large‑scale process control station. Must work together with TP850 baseplate. It adopts high‑performance PowerPC processor, equipped with large‑capacity application memory, CompactFlash card slot for firmware and application program backup. It executes IEC61131‑3 control application, complex PID closed‑loop regulation, advanced interlock logic, sequence & batch control, S800 I/O data interaction and multi‑network communication. This CPU hardware supports main‑standby hot‑standby redundancy configuration. Widely used for maintenance of power, petrochemical, paper‑making, water‑treatment automation cabinets. The CPU module itself does not support hot‑swap.

‑ Power Supply：24VDC，operating range 19.2‑30VDC；typical power consumption 12W

‑ Mechanical Structure：DIN‑rail slide‑lock CPU bare module, matched with TP850 baseplate；overall weight approx 1.45kg

‑ On‑board Resources：PowerPC 32‑bit high‑performance processor；64MB available application RAM；16MB Flash firmware storage；CompactFlash card slot；dual‑level hardware watchdog circuit；lithium battery for real‑time clock and retention data；comprehensive hardware self‑diagnosis circuit

‑ Communication Interface：internal CEX bus for S800 I/O modules；dual 10/100M RJ45 ethernet ports；COM3 RS232 port；COM4 galvanic‑isolated RS485 configuration service port；RCU‑link redundancy interface

‑ Galvanic Isolation：serial communication channels adopt galvanic isolation, isolation rating 2500VAC

‑ Core Function：execute complex control logic, high‑speed PID loop adjustment, interlock & sequence/batch control, dual‑ethernet redundant network communication, CompactFlash program backup, hardware watchdog, comprehensive hardware self‑diagnosis, support CPU main‑standby hot‑standby redundancy

‑ Protection：surge‑suppression and ESD protection for communication ports, reverse‑polarity power‑supply protection

‑ Status LED Indicators：PWR power indicator, RUN running status, ERR fault alarm, COM bus status, ETH network status LED, INIT reset button

‑ Weight：approx 1.45kg

‑ Installed on TP850 baseplate, DIN‑rail mounting, exchanges data with S800 I/O modules through internal CEX back‑plane bus. Single station can run one PM864AK01‑eA as standalone controller; two PM864AK01‑eA can build main‑standby redundant control system with RCU‑link cable, realize bumpless switchover upon main CPU fault.

‑ Supports IEC61131‑3 standard programming languages FBD, LD, ST, SFC. Completes complex continuous PID regulation, cascade control, split‑range control, safety interlock protection, sequential logic and large‑batch process control. Dual ethernet ports support network redundancy, connect 800xA operator station and engineering station. COM3 RS232 port used for modem connection; COM4 isolated RS485 port for local program download, debugging and third‑party device communication. CompactFlash card realizes program backup, restore and firmware upgrade. On‑board lithium battery keeps real‑time clock and retention process variables after power‑off. Dual‑level hardware watchdog realizes automatic reset when program runs abnormally.

‑ Module self‑diagnosis continuously monitors 24V power supply, CPU operation, memory fault, CEX bus and communication channel abnormality; fault codes and alarm messages are uploaded to 800xA operator workstation.

‑ Cannot run independently; must cooperate with TP850 baseplate, 24VDC power supply, S800 I/O modules and Control Builder M engineering software.

‑ Continuously monitors power supply, memory, CEX back‑plane bus and each communication channel status. Hardware fault will light front‑panel ERR fault LED and report fault alarm code to operator station.

‑ No local historical‑data storage; runtime status and fault diagnosis information are read via Control Builder M engineering tool.

‑ CPU hardware failure will lead to control station out‑of‑service; under redundant configuration, standby processor will automatically take over control task without production interruption.

‑ Back‑plane: CEX bus connector on TP850 baseplate, connect I/O bus and 24VDC power supply.

‑ External interfaces：dual RJ45 ethernet ports, COM3 RS232 port, COM4 isolated RS485 port, CompactFlash card slot, INIT reset button, RCU‑link redundancy interface.

‑ Mounting：DIN‑rail installation with TP850 baseplate

‑ Operating Temperature：0 ℃ ~ +55 ℃

‑ Storage Temperature：‑40 ℃ ~ +70 ℃

‑ Relative Humidity：5‑95 %RH, non‑condensing

‑ Pollution degree：Degree 2

‑ Protection Class：IP20, cabinet‑internal installation.

‑ Cut off power before inserting or replacing PM864AK01‑eA CPU module, hot‑swap function is not supported. Must use matching TP850 baseplate, cannot use TP830 baseplate for PM856/PM860 series. When deploying redundant CPU, use special RCU‑link cable and follow redundancy configuration rules. Use industrial shielded cables for ethernet and serial wiring. Pay attention to lithium‑battery ageing, replace battery periodically to avoid loss of clock and retention data.

‑ For spare‑part replacement: verify full model PM864AK01‑eA and part‑number 3BSE018161R2; after hardware installation download firmware and user control program, verify logic operation, PID loop regulation and all communication channel data interaction. Pay attention to firmware compatibility when replacing with R1 version. Wrong baseplate or incompatible firmware version will cause station startup failure.

‑ Single CPU fault will result in control station stop; redundant configuration can avoid production interruption.

Power plant, petrochemical, paper‑making industry AC800M DCS control cabinets; large‑size process control station CPU bare unit; industrial spare‑part for AC800M DCS high‑end CPU unit.