Description
Product Overview
The ABB PM862 AC 800M controller is a programmable controller processor used in industrial automation systems that require coordinated control logic, field I/O handling, and communication with supervisory or engineering systems. ABB’s PM862 documentation identifies an MPC866 processor running at 67 MHz, 32 MB of RAM, and a CompactFlash interface for application loading and cold-retain data storage. The processor unit works with the AC 800M hardware platform and its compatible I/O and communication modules.
Communication and expansion are important parts of the PM862 installation. The documented PM862/TP830 assembly provides two RJ45 Ethernet ports for the control network and two RS-232C serial ports: COM3 supports modem-control signals, while COM4 is isolated and intended for configuration-tool connection. The controller supports redundancy in an appropriately designed configuration, but that does not mean every PM862 part number is itself a redundant assembly. ABB distinguishes PM862K01, a single-controller package, from PM862K02, which includes two PM862K01 controllers and associated components.
For replacement work, identify the full order code and installed baseplate before placing an order. A PM862 CPU, a PM862K01 package, and a PM862K02 redundant package are not equivalent procurement items. Confirm the engineering software version, controller firmware, application backup, communication configuration, and installed I/O architecture. A physically compatible processor may still require engineering checks and a controlled commissioning procedure before it can safely return to service.
Product Introduction
The is part of ABB’s AC 800M controller platform, designed for modular control-system installations. It supports application execution, communication over the control network, and connection to supported I/O and communication modules. The actual control functions depend on the project loaded into the processor and the hardware configuration in which it operates. It should not be treated as a plug-and-play replacement without checking the existing application and system configuration.
During maintenance, preserve the original controller’s application and configuration information where possible. Verify the power supply, baseplate, ModuleBus arrangement, communication connections, and any redundancy links before changing hardware. If the controller participates in a redundant pair, confirm that the replacement package and associated accessories match the intended architecture; installing a single-controller package where a redundant set is required can leave the system below its designed availability level.
Key Technical Specifications
The following table uses ABB’s documented /PM862K01 information. Package-specific details should be checked against the exact order code.
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model family | PM862 |
| Product type | AC 800M CPU / processor unit |
| Processor | MPC866 |
| Processor clock | 67 MHz |
| RAM | 32 MB |
| RAM available for application | Approximately 23.521 MB |
| Firmware storage | 4 MB flash PROM listed for PM862K01 |
| Power supply | 24 VDC |
| Supply voltage range | 19.2–30 VDC |
| Typical / maximum current at 24 VDC | 210 / 360 mA for PM862K01 |
| Ethernet | 2 × RJ45, 10 Mbit/s Ethernet |
| Serial interfaces | 2 × RS-232C on documented /TP830 assembly |
| Control-network protocols | MMS and IAC |
| Maximum applications | 32 |
| Minimum application program cycle time | Down to 1 ms, depending on application |
| Operating temperature | 0 to +55°C for |
| Protection rating | IP20 |
| Dimensions with base | 119 × 186 × 135 mm (W × H × D) |
| Weight with base | Approximately 1.2 kg for |
| Redundancy | Supported in a compatible configuration; verify exact package |
| Baseplate | TP830 for the documented assembly |
PM862
Related Products
These components are associated with the AC 800M platform but are not automatic substitutes for the .
- ABB (3BSE076940R1): Single-controller package.
- ABB PM862K02 (3BSE081636R1): Redundant package containing two controllers and specified accessories.
- ABB TP830: Baseplate used with the documented processor assembly. Check the exact hardware revision and supplied package contents.
- ABB TB807: ModuleBus terminator listed among PM862K02 package components.
- ABB PM866AK01 / PM866AK02: Other AC 800M controller variants with different performance specifications and package configurations. Do not substitute without checking software and application compatibility.
Frequently Asked Questions
Q1: What is the ABB used for?
It is a CPU/processor unit in the AC 800M controller family. It executes the configured control application and communicates with supported I/O, communication modules, and supervisory systems.
Q2: Does support CPU redundancy?
ABB documents redundancy support for the platform, but the package matters. is a single-controller package, while PM862K02 is the redundant package containing two controllers and associated hardware. Confirm the complete order code before purchase.
Q3: What is the power requirement?
The specification lists a 24 VDC supply with an operating range of 19.2–30 VDC. Check the installed power-supply configuration and the exact controller documentation before energizing a replacement.
Q4: Which communication ports are available?
The documented /TP830 assembly has two RJ45 Ethernet ports and two RS-232C serial ports. Confirm port assignments and the communication requirements of the installed project before reconnecting cables.
Q5: Is interchangeable with PM862K02?
No, not as complete packages. is a single-controller package; is configured for redundancy and includes additional hardware. Selection must match the system architecture.
Q6: What should be checked before replacing a ?
Verify the full model and order number, baseplate, firmware and engineering-software compatibility, application backup, power supply, I/O configuration, communication connections, and redundancy requirements.
Q7: What should be requested from the supplier?
Ask for a photograph of the actual nameplate, confirmation of the exact package contents, condition, available test records, warranty terms, and whether the baseplate and required accessories are included.
Procurement Recommendation
For a replacement inquiry, alone is not a complete purchasing specification. Confirm whether the requirement is for a CPU, a single-controller package, or a redundant package. If the installed system uses a TP830 baseplate, ModuleBus terminator, or redundancy-link accessories, specify whether those items must be supplied.
Request the complete order number and nameplate photograph before shipment. For used or refurbished equipment, ask for documented inspection or functional testing and clarify warranty and return terms. Before commissioning, verify the application backup, controller configuration, power supply, I/O connections, and redundancy status against the site documentation.
