Description

Product Core Brief

Model: PM866K01 (3BSE050198R1)
Brand: ABB
Series: AC 800M / System 800xA
Core Function: Main processing unit executing real-time process control logic
Type: CPU Processor Unit
Key Specs: 64 MB RAM, dual Ethernet ports, supports redundant controller configuration
Condition: New Surplus, non-refurbished

⚠️ Not discontinued, factory supply available with limited lead time for direct factory orders

Product Introduction

When complex continuous process systems demand faster logic execution and larger program storage, the PM866K01 serves as the core computing unit for ABB AC 800M automation platforms. It works together with S800 I/O modules and communication adapters to build distributed control systems.

Compared with PM864AK01, this processor carries doubled user memory and shorter loop execution cycle. It reaches 0.09 ms processing time for one thousand boolean instructions. Built-in dual Ethernet interfaces simplify redundant network layout for power, chemical and pulp & paper facilities.

Key Technical Specifications

Parameter	Specification
Part Number	PM866K01, 3BSE050198R1
Memory	64 MB SDRAM, 4 MB Flash PROM
Power Input	24 V DC (19.2 V ~ 30 V DC)
Power Consumption	5.1 W typical, max 8.6 W
Communication Ports	2 × 10/100 Mbps Ethernet, 2 × RS232C
Redundancy Support	Controller hot standby redundancy available
Programming Standard	IEC 61131-3
Operating Temperature	-10 °C ~ +50 °C
Protection Class	IP20
Mounting Method	DIN rail via TP830 baseplate
Certified Standards	CE, UL 508, DNV

Installation & Configuration Guide

Pre-Installation (Estimated: 10 min)

⚠️ Safety Reminders:

Coordinate with operation team to arrange planned shutdown
Switch all field actuators to safe status
Cut off rack power including UPS supply
Wait minimum 5 minutes for internal capacitors discharging

Tools required:

ESD wrist strap and anti-static mat
PH1 cross screwdriver
Digital multimeter
Camera to record wiring and hardware settings
Label tape for cable marking

Backup tasks:

Export complete control program and store copies locally and remotely
Capture clear photos of DIP switches, terminal wiring and rack layout

Module Removal (Estimated: 12 min)

Remove front cover by pressing side buckles
Mark each wire terminal position before loosening screws
Press down DIN rail lock with flat screwdriver, pull the module vertically outward
Inspect backplane connector pins for bending, dust or corrosion
Keep all configuration labels on old module photographed before removal

⚠️ Do not pull module horizontally, this risks bending backplane pins.

New Module Installation (Estimated: 15 min)

Wear ESD protection, take module out of anti-static packaging
Cross-check model number against the unit being replaced
Replicate DIP switch settings strictly according to stored photos: node address, baud rate and bus termination
Align module with backplane, push vertically until locking click is heard
Restore cables one by one following reference photos; torque terminal screws moderately at 0.5 N·m
Complete checklist:

☑ DIP settings match original

☑ All communication and power cables secured

☑ Module locked firmly on DIN rail

☑ No loose tools left inside cabinet

ABB PM866K01 3BSE050198R1

Power-On & Function Test (Estimated: 30 min)

Pre-power inspection:

Measure input voltage to confirm within 19.2 ~ 30 V DC
Verify no short circuit between 24 V and ground terminals

Test steps:

Energize control rack only, keep field loop power off temporarily
Observe LED indicators: steady green RUN light indicates normal boot; flashing red ERR means fault exists
Launch Control Builder, scan network and read controller firmware revision
Download backup project, switch CPU to RUN mode after compilation
Trigger manual I/O tests to verify signal exchange between CPU and field equipment
Maintain continuous operation observation over 30 minutes, confirm no recurring alarms

Troubleshooting tips:

Communication timeout: Check IP address configuration and Ethernet switch ports
Persistent ERR alarm: Verify firmware compatibility between new CPU and existing system
Program download failure: Confirm engineering software version matches controller firmware

Frequently Asked Questions (FAQ)

Q: Can PM866K01 directly replace PM864AK01 without hardware modification?

A: Physical installation is compatible, but firmware matching must be confirmed first. We met cases where old projects running PM864 with low firmware versions cannot recognize PM866 directly. Upgrade or downgrade firmware before replacement to avoid offline failures.

Q: Does PM866K01 support hot swap operation?

A: Hot swap is allowed only in redundant CPU configuration. For single CPU non-redundant racks, full power cut is mandatory before removing the processor. Hot removal on standalone CPU leads to immediate system stop.

Q: What firmware version range works with AC800M System 800xA V5.1?

A: PM866K01 requires firmware V4.0 or higher under 800xA V5.1 environment. Contact us if you need firmware verification before purchase.

Q: What warranty coverage can I get for this processor unit?

A: All supplied units carry a 12-month warranty. We complete full function testing before shipment; test photos or video can be provided upon request. Warranty excludes damage caused by ESD, wrong wiring or overvoltage.

Q: How much memory difference exists between PM866K01 and PM864AK01?

A: PM864AK01 carries 32 MB RAM, PM866K01 upgrades to 64 MB RAM. The upgraded memory supports larger control logic, more historical data storage and additional communication interfaces.

Q: Is ESD protection necessary during installation?

A: Absolutely critical. We have witnessed one field incident where a technician handled the CPU without ESD wrist strap. Static discharge damaged internal circuit, and the unit failed after power on. Always use anti-static tools in dry winter conditions.

Q: Can I build a redundant control pair using two PM866K01?

A: Yes. PM866K02 is the factory redundant kit variant, while two separate PM866K01 can also form hot standby redundant configuration with matched baseplates and terminators.