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134F2979 Danfoss

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Internal Product Review

The 134F2979 is a Danfoss VLT FC 360 automation drive rated for 7.5 kW on 380-480VAC three-phase input. High overload capability and a brake chopper make the unit well suited for demanding motion and process duty. IP20/chassis protection and a coated PCB add practical durability, making the drive a strong choice for controlled cabinet installations.

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Product Description:

The 134F2979 is a frequency converter produced by Danfoss for the VLT FC 360 Automation Drives series. As a three-phase AC drive, it converts a fixed mains frequency into variable-voltage and variable-frequency outputs. This operation allows plant controllers to adjust motor speed in conveyors, pumps, and fan modules without using mechanical throttling. The converter supports accurate process control while reducing unnecessary energy consumption when connected equipment does not need to operate continuously at full speed.

It delivers a continuous mechanical output of 10 HP, corresponding to an electrical rating of 7.5 kW, so motors of this size can run at full load without derating. The drive accepts a 380–480 VAC three-phase supply and incorporates an internal brake chopper that manages regenerative energy during rapid deceleration. Component access is limited to the front because the enclosure has an IP20 chassis rating. This enclosure protects against contact with internal components and the entry of solid objects larger than 12 mm, but it requires installation inside a suitable cabinet. A standard control card processes speed reference signals and digital input and output signals for connection to external automation equipment.

The drive uses Adaptation A with standard cable entries, providing an uncomplicated path for routing power and control wiring into the enclosure. Parallel DC-bus connections are supported through the load-sharing option, allowing compatible drives to exchange available energy through a common connection. The power stage supports high-overload duty to accommodate intermittent torque peaks during demanding acceleration or load changes. Its coated circuit boards resist moisture and airborne contaminants that could otherwise affect electronic components in industrial environments. Conducted electrical noise is reduced by an RFI Class A2 filter, which helps limit interference transferred through connected power lines. The unit does not include a local display, so operating information and parameter adjustments require an appropriate external control or communication interface. It includes standard cable entries, a standard language pack, and the standard software release for the VLT AutomationDrive FC product group.

Adaptation A
Standard Cable Entries
Adaptation B
No Adaptation
B Option
No B Option
Brake & Stop
Brake Chopper
Coating
Coated PCB
Control Card
Standard Control Card
Display
No Display (No Blind Cover)
Horse Power
10 HP
Mains Option
Loadsharing
Power
High Overload
Power Rating
7.5 KW
Product Group
VLT AutomationDrive FC
Protection Level
IP20 / Chassis
RFI Filter
RFI Class A2
Series
360
Software Language Pack
Standard Language Pack
Software Release
Latest release – Std. Software
Voltage
380-480VAC (Three phased)

Frequently Asked Questions about 134F2979:

Q: What is the power rating of the Danfoss 134F2979 drive?

A: The 134F2979 supports a power rating of 7.5 kW, making it well suited for medium-duty motor requirements.

Q: Does the 134F2979 include braking functionality?

A: This model is equipped with a brake chopper for efficient braking performance during stop cycles.

Q: What input voltage does the Danfoss 134F2979 require?

A: The 134F2979 is designed for operation with a three-phase supply voltage of 380-480VAC.

Q: What protection level does the 134F2979 drive provide?

A: This drive features an IP20 protection level with a chassis mount, suitable for use in protected electrical cabinets.

Q: What type of RFI filter is used in the Danfoss 134F2979 drive?

A: It utilizes an RFI Class A2 filter to help reduce electromagnetic interference emitted during operation.

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