1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the ABB PM802F AC800F Base Unit Freelance Field Controller 800 CPU PLC. The PM802F is a core component within the ABB Freelance distributed control system, designed for robust and reliable process control applications. Adherence to the instructions outlined herein is crucial for optimal performance and longevity of the unit.
2. Safety Information
Always observe the following safety precautions to prevent personal injury and damage to the equipment.
- Installation and maintenance must only be performed by qualified personnel familiar with industrial control systems and electrical safety procedures.
- Ensure that all power supplies are disconnected before performing any installation, wiring, or maintenance tasks.
- Protect the unit from moisture, dust, and extreme temperatures. Operate within specified environmental conditions.
- Ground the unit properly according to local and national electrical codes.
- Avoid touching electronic components directly to prevent electrostatic discharge (ESD) damage. Use appropriate ESD protection.
3. Product Overview
The ABB PM802F is a central processing unit (CPU) base unit for the AC800F Freelance Field Controller system. It provides the processing power and communication interfaces necessary to manage and control industrial processes. The unit is designed for integration into a larger control architecture, facilitating data exchange and execution of control logic.

Figure 1: ABB PM802F AC800F Base Unit Freelance Field Controller. This image displays the internal components of the controller, including the circuit board with various chips and connectors, housed within a protective metal casing. The design facilitates modular expansion and robust operation in industrial environments.
Key features include:
- Integrated CPU for executing control programs.
- Multiple slots for I/O modules and communication interfaces.
- Robust design suitable for industrial environments.
- Compatibility with ABB Freelance engineering tools for configuration and programming.
4. Setup and Installation
Follow these steps for proper installation of the PM802F base unit:
- Mounting: Securely mount the base unit onto a DIN rail or control cabinet panel using appropriate fasteners. Ensure adequate ventilation space around the unit.
- Power Connection: Connect the power supply to the designated terminals. Verify correct voltage and polarity before applying power. Refer to the unit's label for specific power requirements.
- Module Insertion: Insert required I/O modules and communication modules into their respective slots on the base unit. Ensure modules are seated firmly and locked into place.
- Field Wiring: Connect field devices (sensors, actuators) to the I/O modules according to the system design and wiring diagrams. Double-check all connections for correctness and security.
- Network Connection: Connect the controller to the industrial network (e.g., Ethernet, Fieldbus) using appropriate cables and connectors.
- Grounding: Ensure the unit and the control cabinet are properly grounded to minimize electrical noise and ensure safety.
5. Operating Instructions
Once installed and configured, the PM802F operates as part of the larger Freelance control system. Basic operational aspects include:
- Power On: Apply power to the unit. Observe the status indicators for proper boot-up sequence.
- Status Indicators: Monitor LED indicators on the front panel for operational status, errors, and communication activity. Refer to the detailed technical documentation for specific LED meanings.
- Configuration and Programming: The controller's logic and parameters are configured and programmed using ABB Freelance engineering software. This process typically involves downloading the application program to the CPU.
- Monitoring: Use the engineering software or connected Human-Machine Interface (HMI) to monitor process variables and controller status.
6. Maintenance
Regular maintenance ensures reliable operation and extends the lifespan of the PM802F.
- Cleaning: Periodically clean the exterior of the unit to remove dust and debris. Use a soft, dry cloth. Do not use solvents or abrasive cleaners.
- Inspection: Regularly inspect all wiring connections for tightness and signs of corrosion or damage. Check for any loose components or unusual odors.
- Environmental Check: Ensure the operating environment remains within specified temperature and humidity ranges. Verify that ventilation openings are not obstructed.
- Firmware Updates: Consult ABB's official support channels for information on available firmware updates. Follow official procedures for any updates to maintain system integrity and security.
7. Troubleshooting
This section provides guidance for common issues. For complex problems, contact ABB technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | No power supply; incorrect wiring; faulty power supply | Check power connections and voltage; verify power supply functionality; ensure correct wiring. |
| Status LED indicates error | Internal fault; configuration error; module error | Refer to the detailed LED diagnostic guide in the technical manual; check configuration via engineering software; reseat or replace modules. |
| No communication with network | Incorrect network settings; faulty cable; network device issue | Verify network configuration in software; check network cable integrity; ensure network devices are operational. |
| I/O modules not recognized | Module not seated correctly; incompatible module; faulty module | Reseat the module firmly; ensure module compatibility with PM802F; replace module if necessary. |
8. Specifications
The following specifications apply to the ABB PM802F AC800F Base Unit Freelance Field Controller:
- Model: PM802F
- Part Number: 3BDH000002R1
- Brand: ABB
- Type: AC800F Base Unit Freelance Field Controller 800 CPU PLC
- ASIN: B07B892VHX
- UPC: 760377725424
- Package Dimensions: Approximately 16 x 16 x 16 inches (40.64 x 40.64 x 40.64 cm)
- Manufacturer: ABB
- Operating Temperature: Refer to official ABB documentation for precise ranges, typically suitable for industrial environments.
- Power Supply: Specific voltage and current requirements are detailed in the product's technical data sheet.
9. Contact and Support
For technical assistance, detailed documentation, or further inquiries regarding the ABB PM802F, please refer to the official ABB website or contact your local ABB representative. Comprehensive support resources, including software downloads and service information, are available through official ABB channels.
ABB Official Website: www.abb.com





