ABB PM856K01 3BSE066490R1 Processor Unit Kit

The PM856K01 3BSE066490R1 is complete processor kit for ABB AC800M Compact DCS, commercial kit version of PM856AK01. The kit includes PM856A‑CPU board, TP830 baseplate, bus terminators, backup battery and power connector. It is core control hardware for compact control station. Total 16MB RAM, 10.456MB usable application memory, CompactFlash slot for firmware and application backup. Executes IEC61131‑3 control program, PID closed‑loop regulation, interlock logic, sequence control, S800 I/O data exchange and multi‑network communication. This kit does not support CPU redundancy. Widely used for maintenance of power, chemical, paper‑making, water‑treatment automation cabinets. CPU module itself does not support hot‑swap.

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Phone:+86 19316626421

Description

Hardware Electrical Specifications

‑ Power Supply:24VDC,operating range 19.2‑30VDC;typical power consumption 2.9W

‑ Mechanical Structure:DIN‑rail slide‑lock compact complete kit (CPU+TP830 baseplate+accessories);overall weight approx 1.2kg

‑ On‑board Resources:MPC860 24‑bit processor;16MB total RAM(10.456MB application memory);2MB Flash firmware storage;CompactFlash card slot;hardware watchdog circuit;lithium battery for real‑time clock and retention data;hardware self‑diagnosis circuit

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

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

‑ Core Function:execute control logic, PID loop adjustment, interlock & sequence control, dual‑ethernet network communication, CompactFlash program backup, hardware watchdog, comprehensive hardware self‑diagnosis

‑ 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 1.2kg

Main Functions

‑ PM856K01 is full order kit, contains CPU board, TP830 baseplate, CEX‑bus terminator, ModuleBus terminator, backup battery and power plug, ready‑to‑install. Mounted on DIN‑rail, exchanges data with S800 I/O modules over internal CEX back‑plane bus. Single station runs one PM856K01 as main controller, hardware does not support main‑standby CPU redundancy.

‑ Supports IEC61131‑3 standard programming languages FBD, LD, ST, SFC. Completes continuous PID regulation, cascade control, safety interlock protection, sequential logic control. Dual ethernet ports connect control network and 800xA operator station. Two RS232 serial ports are used for local program download, debugging and third‑party serial 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. Independent 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; kit already includes necessary baseplate and accessories.

Difference between PM856AK01 and PM856K01: PM856AK01 is CPU board only; PM856K01 is complete order kit (CPU + TP830 baseplate + terminators + battery + power connector), same CPU hardware performance.
Control & Monitoring Function

‑ 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; this model has no native redundancy function.

Signal Interfaces

‑ Back‑plane: CEX bus on TP830 baseplate, connect I/O bus and 24VDC power supply.

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

Environmental Specifications

‑ Mounting:DIN‑rail installation

‑ Operating Temperature:+5 ℃ ~ +55 ℃

‑ Storage Temperature:‑40 ℃ ~ +70 ℃

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

‑ Pollution degree:Degree 2

‑ Protection Class:IP20, cabinet‑internal installation.

System Complementary Components
  1. PM856K01 complete processor kit(3BSE066490R1)
Complementary parts: 24VDC power supply, S800 series I/O modules, CompactFlash memory card, industrial shielded ethernet cables, Control Builder M engineering & 800xA monitoring software.
Installation Notes

‑ Cut off power before inserting or replacing CPU module, hot‑swap function is not supported. The kit is pre‑equipped with TP830 baseplate, bus terminators and battery. 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 PM856K01 and part‑number 3BSE066490R1; after hardware installation download firmware and user control program, verify logic operation, PID loop regulation and all communication channel data interaction.

‑ Module fault will result in control station stop; this hardware does not support main‑standby redundancy.

Typical Application Scenarios

Power plant, paper‑making, chemical industry AC800M Compact DCS control cabinets; medium‑size process control station complete processor kit; industrial spare‑part for AC800M Compact DCS CPU unit.

Key Features
  1. ABB AC800M Compact PM856K01 complete processor kit (3BSE066490R1), kit includes CPU board, TP830 baseplate, terminators, battery and power connector; same CPU hardware as PM856AK01.
  2. MPC860 24‑bit processor, total 16MB RAM, 10.456MB application memory, CompactFlash card slot for program backup, dual ethernet and dual RS232 interfaces, CEX high‑speed I/O back‑plane bus.
  3. Fully complies with IEC61131‑3 standard, completes PID, interlock, sequence control for medium‑scale automation projects.
  4. DIN‑rail slide‑lock structure, does not support hot‑swap and CPU redundancy, power‑off required for replacement.
  5. Matches Control Builder M / 800xA system; PM856K01 is full set ordering variant of PM856AK01.
  6. Mature discontinued DCS spare‑part, only applied for old‑system maintenance and retrofit projec

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