Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Product Introduction (Anti-Template)
The AC 800M family forms the control backbone of many System 800xA installations. The PM866AK01 is the non-redundant processor unit kit built around the PM866A CPU.
It delivers solid performance for medium-to-large applications, supports dual Ethernet control network connections, and comes as a complete package with baseplate and necessary terminators. Plants running 800xA keep this unit available because loss of the controller can take process areas offline until a compatible replacement is installed, configured, and brought online.
PM866AK01
PM866AK01
PM866AK01
PM866AK01
4. Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | PM866AK01 |
| Article Number | 3BSE076939R1 |
| Description | Processor Unit (non-redundant) |
| Processor | MPC866, 133 MHz |
| Memory | 64 MB total (approx. 51.389 MB available for application) |
| Performance | 0.09 ms for 1000 boolean operations |
| Cycle Time | Down to 1 ms |
| Power Supply | 24 V DC (19.2–30 V DC) |
| Power Consumption | Typ. 210 mA / Max. 360 mA |
| Ethernet Ports | 2 × RJ45 (CN1, CN2) for Control Network |
| Serial Ports | 2 × RJ45 (COM3, COM4) |
| Package Includes | PM866A CPU, TP830 baseplate, TB850, TB807, TB852 terminators, backup battery |
| Redundancy | No (single unit; use PM866AK02 for redundant pair) |
| Dimensions (approx.) | 119 × 186 × 135 mm |
| Weight | Approx. 1.2 kg |
5. Field Application & Technical Pitfalls (The Engineer’s Guide)
This processor unit is used as the central controller in System 800xA / AC 800M installations for process control, interlocks, and sequence logic across industries such as power, chemicals, pulp & paper, and water treatment.
Three pitfalls appear during replacement:
Baseplate and terminator matching – the unit must be installed on the correct TP830 baseplate with the proper CEX-Bus and ModuleBus terminators; missing or incorrect terminators cause communication faults.
Control Network configuration – dual Ethernet ports must be correctly assigned and the Control Network settings matched to the existing system.
Battery and memory backup – a depleted or missing backup battery can result in loss of real-time clock or retained data after power cycles.
One plant replaced a PM866 unit and saw repeated network alarms. The new CPU was healthy; the CEX-Bus terminator had not been reinstalled. Fitting the correct terminator restored stable communication.
6. Quality Control (QC) SOP & Transparency
- Inbound Verification – OEM labeling, full model (PM866AK01) and article number (3BSE076939R1) are photographed and checked against the packing list; package contents (CPU, baseplate, terminators, battery) are verified.
- Live Rig Testing – unit is powered on a compatible setup and checked for successful boot and status LED behavior.
- Parameter Testing – basic Ethernet link and controller recognition are confirmed where test equipment is available.
- Final QA & Packaging – unit is sealed in anti-static packaging with desiccant, fitted with a QC-passed label showing test date and technician ID, then double-boxed for shipment.
7. Frequently Asked Questions (FAQ)
What is the ABB PM866AK01?
It is a non-redundant processor unit kit for the AC 800M controller family used in System 800xA.
What is the article number?
3BSE076939R1.
What processor and memory does it have?
MPC866 running at 133 MHz with 64 MB total memory (approximately 51.4 MB available for applications).
Does it support redundancy?
The PM866AK01 itself is a single (non-redundant) unit. For redundant configurations, the PM866AK02 kit is used.
What is included in the package?
PM866A CPU, TP830 baseplate, CEX-Bus and ModuleBus terminators, RCU-Link terminator, and backup battery. No license is included.
What warranty comes with a new-surplus unit?
Twelve months from shipment against defects in materials and workmanship when installed within the published ratings.
How do I confirm the unit is healthy after installation?
Install on the correct baseplate with terminators, apply 24 V DC power, verify status LEDs, confirm the controller appears on the Control Network, and download/run a test application without errors.
