Atlas Copco PF4002‑C‑HW Power Focus SL Nutrunner Controller

The Atlas Copco PF4002‑C‑HW is a cutting‑edge tightening controller from the Power Focus SL series, specifically designed for electric nutrunners in high‑precision assembly applications. This controller delivers exceptional torque and angle control, supporting both DC and brushless motor tools. With its modular hardware and extensive communication capabilities, the PF4002‑C‑HW is the backbone of modern fastening lines in automotive, off‑highway, and industrial equipment manufacturing.

Controller Architecture

The PF4002‑C‑HW is built on a powerful 32‑bit processor with real‑time operating system, ensuring deterministic control loops. It can manage up to 4 tools simultaneously in a master‑slave configuration, or operate as a standalone unit. The controller features a rugged metal enclosure with passive cooling, allowing deployment in ambient temperatures up to 55 °C without derating. All connections are located on the front panel for easy wiring, including tool connectors, power input, and communication ports.

Tightening Performance

This controller supports a wide torque range from 0.1 N·m to 800 N·m, depending on the nutrunner model. It offers multiple tightening strategies: torque control, angle control, yield detection, and gradient monitoring. The PF4002‑C‑HW also includes a patented “adaptive tightening” algorithm that automatically compensates for joint stiffness variations, ensuring consistent clamp load despite production tolerances. Cycle times as low as 0.2 seconds per fastener are achievable.

Electrical and I/O Specifications

• Supply Voltage: 230 VAC or 400 VAC, 3‑phase, 50/60 Hz

• Motor Output: 400 VAC, up to 10 A per tool

• Digital Inputs: 8 isolated, 24 VDC

• Digital Outputs: 8 relay, 2 A @ 250 VAC

• Analog Inputs: 2 configurable (0‑10 V or 4‑20 mA)

• Encoder Input: 2 channels for angle feedback

• Communication: Ethernet, Profinet, EtherNet/IP, DeviceNet, Profibus

• Memory: 4 GB internal, expandable via SD

Software and Programming

Programming is accomplished using Atlas Copco ToolsTalk PF software, which provides a graphical environment for creating tightening programs, logic sequences, and condition monitoring. The controller can store up to 255 different jobs, each with multiple steps and parameter sets. The software includes a simulation mode to validate programs offline, reducing commissioning time. Real‑time data is accessible via OPC UA, allowing seamless integration with MES and ERP systems.

Data Logging and Traceability

Every tightening cycle is recorded with detailed results: final torque, angle, time, and status. The PF4002‑C‑HW can store up to 10,000 cycles internally, with automatic overwrite of oldest data. Results can be exported in various formats (CSV, XML, JSON) via Ethernet or USB. The controller also supports barcode integration for job selection and serial number tracking, ensuring full traceability of fastening operations.

User Interface and Diagnostics

A front‑panel keypad and graphical display allow local monitoring and parameter adjustment. The display shows current torque, angle, and tool status, as well as alarm messages with troubleshooting hints. The controller also includes a web server for remote access, enabling diagnostics and performance monitoring from any browser. Self‑diagnostic routines check hardware health and automatically alert for maintenance needs.

Compatibility with Nutrunners

This controller is compatible with Atlas Copco’s entire range of electric nutrunners, including the Tensor S, Tensor SRB, and ET series. It can also interface with pneumatic tools via external transducers. The PF4002‑C‑HW automatically identifies connected tools and loads the appropriate parameter profiles, simplifying changeovers.

Application Examples

Typical applications include engine block assembly, wheel nut fastening, suspension bolting, and any process where clamping force and angle are critical. The controller is also used in battery manufacturing for terminal connections and in white goods assembly for consistent screw fastening. Its flexibility makes it suitable for both high‑volume and low‑volume mixed production.

Maintenance and Upgrades

Routine maintenance is limited to cleaning air filters (if fitted) and verifying connections. Firmware upgrades are performed via USB or network; the controller supports live upgrade without interrupting production. Spare parts, such as fuse holders and terminal blocks, are readily available through the Atlas Copco service network.

Conclusion

The Atlas Copco PF4002‑C‑HW Power Focus SL nutrunner controller combines power, precision, and connectivity in a compact package. Its advanced control algorithms, extensive I/O, and industry‑standard communication ensure it meets the demands of the most challenging fastening applications, while its user‑friendly design simplifies operation and maintenance.