Atlas Copco 48R050‑01001 Relay Output Module (48R05001001)

The Atlas Copco 48R050‑01001 (also 48R05001001) is a compact relay output module designed to expand the switching capacity of Atlas Copco controllers and PLCs. This module provides multiple electromechanical relay outputs that can handle higher voltage and current loads than typical solid‑state outputs, making it ideal for driving external devices such as solenoid valves, motor contactors, indicator lamps, and alarms. It connects directly to the controller via a ribbon cable and is automatically recognized by the system.

Output Specifications

• Number of Outputs: 8 (form C, changeover contacts)

• Contact Rating: 5 A @ 250 VAC / 5 A @ 30 VDC (resistive)

• Contact Material: Silver alloy

• Initial Contact Resistance: < 50 mΩ

• Mechanical Life: > 10 million operations

• Electrical Life: > 100,000 operations at rated load

• Coil Voltage: 24 VDC (derived from controller)

• Coil Power: 0.5 W per relay

• Isolation: 2500 VAC (coil to contacts)

Module Design

The module is housed in a plastic enclosure with a transparent cover, allowing visual inspection of the relays. It is designed for DIN‑rail mounting and includes pluggable terminal blocks for easy wiring. LED indicators on the front show the status of each output channel.

Connection and Configuration

The module connects to the host controller via a supplied flat cable. Configuration is performed through the controller’s software, where each relay can be assigned to a specific function (e.g., start motor, open valve, turn on light). The module’s address is set by DIP switches, allowing multiple modules to be used together.

Applications

Used to drive high‑power loads in automation systems: conveyor belts, coolant pumps, pneumatic valves, warning beacons, and interlock circuits. Also used to interface with AC‑powered devices that cannot be directly driven by low‑voltage DC outputs.

Compatibility

Compatible with Atlas Copco PF, Tensor, and D‑series controllers that support expansion modules. Also works with third‑party PLCs via appropriate interface.

Protection and Safety

Each relay includes a snubber circuit to suppress back‑EMF from inductive loads. The module provides optical isolation between the controller and the relay contacts for safety.

Maintenance

Relay contacts may wear over time; replaceable relays are socketed for easy field replacement. Regular inspection of contact conditions is recommended for high‑cycle applications.

Benefits

Adds robust switching capability without overloading the controller’s internal power supply. The relay outputs can handle mixed AC/DC loads, offering flexibility.

Conclusion

The Atlas Copco 48R050‑01001 relay output module provides a dependable, high‑current interface between controllers and field devices, enhancing the versatility and power of Atlas Copco automation systems.