137H8927 Danfoss 250kW Three Phase iC7-Automation Variable Speed Drive

Why Choose the Danfoss 137H8927 iC7-Automation Frequency Converter?

The Danfoss 137H8927 is a high-performance iC7-Automation air-cooled frequency converter designed for demanding industrial motor-control and automation applications. Rated at 480 A with typical motor power of 250 kW at 400 V in normal-overload duty, it provides precise variable-speed control for large motors used throughout modern machinery and process systems.

As part of the advanced Danfoss iC7-Automation series, the 137H8927 combines powerful motor control with integrated communications, functional safety and extensive control I/O. This configuration incorporates PROFINET RT, an Ethernet interface, coated circuit boards, an integrated brake chopper, AC fuses and a mains switch, together with Safe Torque Off (STO) functionality.

The drive operates from a three-phase 380–500 V AC supply and is housed in an IP21 / UL Type 1 FK10c frame. It supports 250 kW at 400 V under normal-overload operation, with additional high-overload ratings for applications requiring increased starting or transient torque.

Key Advantages

• High-performance iC7-Automation frequency converter for large industrial motors.
• 250 kW typical motor power at 400 V in normal-overload duty.
• 480 A continuous current rating for normal-overload operation.
• Three-phase 380–500 V AC input suitable for industrial power systems.
• Integrated Safe Torque Off (STO) functional safety.
• PROFINET RT connectivity for industrial automation networks.
• Integrated brake chopper for applications requiring dynamic braking capability.
• Integrated AC fuses and mains switch in this configuration.
• IP21 / UL Type 1 protection with coated circuit boards.

Key Features

• Danfoss iC7-Automation series.
• 250 kW typical motor power at 400 V with 110% overload duty.
• 480 A continuous output current in normal-overload duty.
• 528 A overload current for the 1-in-10-minute normal-overload rating.
• 200 kW at 400 V high-overload motor rating with 385 A continuous current.
• Additional 160 kW at 400 V 150% high-overload rating with 302 A continuous current.
• Three-phase 380–500 V AC input supply.
• 0–590 Hz output frequency range.
• IP21 / UL Type 1 enclosure rating.
• FK10c frame with air cooling.
• PROFINET RT OS7PR communication interface.
• Standard I/O with 4 digital inputs, 2 digital I/O, 2 analogue inputs, 1 analogue output and 2 relay outputs.
• Control Panel 2.8 OPX20.
• EMC category C2 configuration.
• IE2 efficiency class.

High-Power Motor Control for Industrial Automation

Frequency converters such as the Danfoss iC7-Automation regulate motor speed and torque by controlling the frequency and voltage supplied to the motor. This allows motor-driven equipment to respond accurately to process demand while helping reduce mechanical stress and unnecessary energy consumption compared with uncontrolled fixed-speed operation.

The 137H8927 combines a high current and power rating with PROFINET RT communications, extensive standard I/O, integrated STO and dynamic braking capability. Its integrated AC fuses and mains switch further support installation in demanding industrial systems where robust motor control and close integration with machine or process automation are required.

Typical Applications

• Large industrial conveyors and material-handling systems.
• High-capacity pumps and pumping systems.
• Industrial fans, blowers and ventilation equipment.
• Compressors and process machinery.
• Automated manufacturing and production equipment.
• Heavy-duty industrial machinery requiring increased overload capability.
• OEM machine-building and process automation systems.
• Industrial installations using PROFINET communications.