137G9998 Danfoss 90kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137G9998 VLT Micro Drive FC 51 variable frequency drive designed for efficient motor control, industrial automation and energy-saving applications.
Why Choose the Danfoss 137G9998 VLT® Micro Drive FC 51?
The Danfoss 137G9998 is a compact and highly reliable AC variable frequency drive (VFD) designed for precise speed and torque control of AC motors in industrial machinery, building services and automation systems. As part of the proven Danfoss VLT® Micro Drive FC 51 series, it provides efficient motor control, straightforward commissioning and dependable long-term operation.
Designed specifically for machine builders, panel manufacturers and industrial engineers, the VLT® Micro Drive FC 51 range combines advanced motor control performance with a compact footprint. Its space-saving design helps reduce panel size and installation costs while maintaining the reliability and flexibility expected from Danfoss drive technology.
The Danfoss 137G9998 incorporates intelligent control functions, integrated communication capabilities and coated circuit boards for enhanced durability. These features make it an excellent choice for pumps, fans, conveyors, compressors and general-purpose industrial automation applications.
Key Advantages
Compact variable frequency drive for industrial motor control.
Improves energy efficiency through variable speed operation.
Reduces mechanical wear and extends motor life.
Simple commissioning with guided programming functions.
Integrated communication interfaces for automation systems.
Reliable operation in demanding industrial environments.
Key Features
Danfoss VLT® Micro Drive FC 51 series.
Compact panel-mounted construction.
Built-in RS485 communication interface.
Modbus RTU communication support.
Automatic Energy Optimisation (AEO).
Integrated PID controller functionality.
Electronic Thermal Relay (ETR) motor protection.
Coated printed circuit boards for enhanced durability.
Reliable Motor Control for Industrial Machinery
Variable frequency drives such as the Danfoss VLT® Micro Drive FC 51 regulate motor speed by adjusting output frequency and voltage to match process requirements. This helps reduce energy consumption, improve process control and minimise mechanical stress on connected equipment.
The FC 51 series is engineered for straightforward installation and commissioning, offering guided programming, compact dimensions and dependable performance. Integrated communications and flexible control capabilities make it suitable for a wide range of industrial automation applications.
Typical Applications
Industrial conveyors and material handling systems.
Pumps and pressure control equipment.
Fans and ventilation systems.
Compressors and processing machinery.
Packaging and production equipment.
OEM machine-building and automation systems.
Technical Specifications
Power
90 kW
Current
170 A
Phase
Three Phase
IP Rating
IP20
Series
VLT® Micro Drive FC 51
Part number
137G9998
Product type
AC variable frequency drive
Drive family
VLT® Micro Drive
Communication protocol
Modbus RTU
Communication interface
RS485
Motor protection
Electronic Thermal Relay (ETR)
Protection rating
IP20
Mounting type
Panel mounting
Control functions
PID control and energy optimisation
PCB protection
Coated circuit boards
EMC Filter
None
Frequently Asked Questions
What is the Danfoss 137G9998 used for?
The Danfoss 137G9998 is used to control the speed and torque of AC motors in industrial automation, HVAC and machinery applications.
Does the drive support industrial communication networks?
Yes. The drive features an integrated RS485 communication interface and supports Modbus RTU communication.
What energy-saving features are included?
The drive incorporates Automatic Energy Optimisation (AEO) technology to improve efficiency and reduce power consumption.
How does the drive protect connected motors?
The VLT® Micro Drive FC 51 includes an Electronic Thermal Relay (ETR) that helps protect motors from overheating and overload conditions.
Where is the Danfoss 137G9998 typically installed?
The drive is commonly installed inside electrical control panels and machine cabinets as part of industrial motor control systems.
Trusted by Industrial Automation Professionals Worldwide
Danfoss VLT® Micro Drive FC 51 frequency converters are widely used by machine builders, automation engineers and industrial operators seeking reliable motor control, energy efficiency and simple integration into modern automation systems.
Power
90 kW
Current
170 A
Phase
Three Phase
IP Rating
IP20
Series
VLT® Micro Drive FC 51
Part number
137G9998
Product type
AC variable frequency drive
Drive family
VLT® Micro Drive
Communication protocol
Modbus RTU
Communication interface
RS485
Motor protection
Electronic Thermal Relay (ETR)
Protection rating
IP20
Mounting type
Panel mounting
Control functions
PID control and energy optimisation
PCB protection
Coated circuit boards
EMC Filter
None
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...