Atlas Copco Selector‑4 Controller (8433 0610 04 / 8433061004)

The Atlas Copco Selector‑4, identified by part numbers 8433 0610 04 and 8433061004, is a compact and versatile controller designed to manage up to four electric tightening tools in a single station. This unit enables efficient multi‑spindle or sequential fastening operations, making it ideal for assembly lines where multiple tools must be coordinated within a small footprint. The Selector‑4 integrates seamlessly with Atlas Copco’s Power Focus and Tensor tool families, providing precise torque and angle control while simplifying system architecture and reducing cabling complexity.

Controller Architecture

The Selector‑4 is built on a high‑speed microcontroller with dedicated firmware for tool sequencing and communication. It features a rugged metal housing designed for DIN‑rail or panel mounting, with passive cooling for reliable operation in industrial environments. The unit connects to a host controller (such as PF3000 or PF4000) via a high‑speed serial link, and distributes power and signals to up to four tools through individual output ports. Each port includes motor drive, encoder feedback, and tool identification circuits.

Control and Sequencing

The Selector‑4 enables three operational modes: sequential, where tools are activated one after another; selective, where the host controller chooses which tool to enable; and simultaneous, where multiple tools operate in parallel (subject to power budget). The unit handles all low‑level commutation and safety monitoring, offloading these tasks from the host controller. It supports both brush and brushless DC motors, with automatic adaptation to tool type.

Technical Specifications

• Supply Voltage: 36 VDC (from host controller or external power supply)

• Number of Tool Ports: 4

• Output Power per Port: Up to 500 W (total system limited)

• Communication: CAN‑bus or SPI to host

• Digital Inputs: 4 isolated (24 VDC)

• Digital Outputs: 4 solid‑state (0.5 A)

• Tool Recognition: Automatic, via EEPROM

• Protection: Overcurrent, overtemperature, short‑circuit

• Operating Temperature: 0 °C to +50 °C

• Protection: IP20

• Dimensions: 210 x 180 x 80 mm

Integration with Host Controllers

The Selector‑4 is fully compatible with Atlas Copco PF3000, PF4000, and PF6000 series controllers. It is configured through the host controller’s software (ToolsTalk), where each tool port is assigned a specific tightening program. The host controller sends start/stop commands and receives real‑time torque and angle data from each tool through the Selector‑4. This architecture reduces the number of high‑power cables and simplifies wiring in multi‑tool workstations.

Safety and Diagnostics

The unit includes comprehensive safety features: emergency stop signal pass‑through, motor overcurrent protection per port, and thermal monitoring. Each tool port has independent fault detection, and any fault is reported to the host controller with a specific error code. LED indicators on the front panel show the status of each port (ready, running, fault).

Applications

Typical applications include multi‑spindle fastening stations for automotive sub‑assembly, wheel nut tightening, cylinder head bolting, and electronics chassis assembly. The Selector‑4 is also used in flexible manufacturing cells where different tools are required for different product variants.

Installation and Maintenance

Installation involves mounting the unit, connecting power from the host, and attaching the tool cables to the output ports. Tool cables are available in various lengths. The Selector‑4 requires no periodic maintenance beyond inspection of connections and ventilation.

Benefits for Production

By centralising control of up to four tools, the Selector‑4 reduces controller count, cabinet space, and installation cost. It simplifies tool changeover and enables flexible workstation configurations. The integrated diagnostics reduce downtime by quickly isolating faults to a specific tool or port.

Conclusion

The Atlas Copco Selector‑4 (8433 0610 04 / 8433061004) is a compact, cost‑effective solution for multi‑tool tightening stations, delivering reliable performance and seamless integration with the Atlas Copco tightening ecosystem.