137L1139 Danfoss 710kW Three Phase iC7-Automation Variable Speed Drive

Why Choose the Danfoss 137L1139 iC7-Automation Frequency Converter?

The Danfoss 137L1139 is a high-power iC7-Automation frequency converter designed for demanding industrial automation and heavy-duty motor control applications. As part of the advanced Danfoss iC7-Automation drive series, it provides precise speed and torque control, flexible connectivity and integrated safety functionality for large-scale machinery and process systems.

This frequency converter is engineered for industrial users, panel builders and system integrators who require robust high-current drive performance in protected environments. With an IP54 / UL Type 12 enclosure, standard I/O, EtherNet/IP communication and integrated Ethernet connectivity, the Danfoss 137L1139 is well suited to modern automation networks and demanding production facilities.

With a rated output current of 1260 A and operation from a three-phase 380-500 V AC supply, the 137L1139 is ideal for heavy-duty motors used in large conveyors, pumps, fans, compressors, processing equipment and high-power industrial machinery.

Key Advantages

• High-performance industrial frequency converter for demanding automation applications.
• 1260 A output current rating for high-power motor control systems.
• Three-phase 380-500 V AC input for industrial power systems.
• IP54 / UL Type 12 enclosure for enhanced environmental protection.
• Integrated Safe Torque Off (STO) safety function.
• EtherNet/IP fieldbus support for industrial automation integration.
• Ethernet port included for modern control networks.
• Efficient air-cooled design for reliable high-power operation.

Key Features

• Danfoss iC7-Automation series.
• 1260 A rated output current.
• Three-phase 380-500 V AC input supply.
• IP54 / UL Type 12 enclosure.
• Frame size FB12.
• EMC category C2.
• Integrated Safe Torque Off (STO) functionality.
• EtherNet/IP OS7IP fieldbus protocol enabled.
• Ethernet port included.
• Control Panel 2.8 OPX20 included.
• Air-cooled construction for high-power thermal management.
• Standard I/O: 4 digital inputs, 2 digital I/O, 2 analogue inputs, 1 analogue output and 2 relay outputs.

Reliable Motor Control for Heavy-Duty Automation

Frequency converters such as the Danfoss 137L1139 regulate the voltage and frequency supplied to an AC motor, enabling accurate motor speed adjustment to match process requirements. This helps improve energy efficiency, reduce mechanical stress and support smoother operation in demanding industrial systems.

The iC7-Automation platform is designed for modern industrial environments where connectivity, functional safety and dependable high-power performance are essential. With integrated STO, EtherNet/IP communication and a protected IP54 enclosure, the 137L1139 is well suited to heavy-duty automation and large motor control applications.

Typical Applications

• Large industrial conveyors and material handling systems.
• Heavy-duty pumps, fans and ventilation equipment.
• Compressors and process machinery.
• Manufacturing and production systems.
• Water and wastewater treatment equipment.
• Heavy industrial automation systems.
• High-power motor control applications.