Description
‑ Power Supply：24VDC，operating range 19.2‑30VDC；typical power consumption 11W
‑ Mechanical Structure：DIN‑rail slide‑lock CPU bare module, matched with TP850 baseplate；overall weight approx 1.4kg
‑ On‑board Resources：PowerPC 32‑bit high‑performance processor；48MB 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 1.4kg
‑ 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 PM861AK01 as standalone controller; two PM861AK01 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.
Difference compared with PM860AK01：PM861AK01 owns stronger processing performance, larger memory, supports CPU main‑standby redundancy, matched with TP850 baseplate instead of TP830; hardware platform is not interchangeable with PM860 series.
‑ 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.
- PM861AK01 processor unit（3BSE018157R1）
Complementary parts: TP850 base plate, 24VDC power supply, S800 series I/O modules, CompactFlash memory card, RCU‑link cable( for redundancy), industrial shielded ethernet cables, Control Builder M engineering & 800xA monitoring software.
‑ Cut off power before inserting or replacing PM861AK01 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 PM861AK01 and part‑number 3BSE018157R1; after hardware installation download firmware and user control program, verify logic operation, PID loop regulation and all communication channel data interaction. 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 Compact DCS control cabinets; large‑size process control station CPU bare unit; industrial spare‑part for AC800M Compact DCS high‑end CPU unit.
- ABB AC800M Compact high‑performance PM861AK01 processor bare unit (3BSE018157R1), large‑capacity 48MB application RAM, CompactFlash card slot for program backup, requires TP850 baseplate.
- PowerPC 32‑bit high‑performance processor, dual ethernet support network redundancy, RS232 and isolated RS485 multi‑communication interfaces, CEX high‑speed I/O back‑plane bus, equipped with RCU‑link redundancy interface.
- Supports CPU main‑standby hot‑standby redundancy, realizes bumpless switchover for high‑reliability large‑scale process occasions.
- DIN‑rail slide‑lock structure, does not support hot‑swap, power‑off required for replacement; cannot use TP830 baseplate of PM856/PM860 series.
- Fully complies with IEC61131‑3 standard, completes complex PID, interlock, sequence and batch control tasks, higher performance than PM860 series.
- Mature discontinued DCS spare‑part, only applied for old‑system maintenance and retrofit projects。
Reviews
There are no reviews yet.