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VLT 5042 Danfoss

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The Danfoss VLT 5042 is part of the VLT 5000 Frequency Converters series. This converter offers an acceleration torque of 100 percent and a starting torque of 180 percent for 0.5 seconds. It features a true power factor of 0.90, rated motor frequency of 50 or 60 Hz, and supports a maximum motor cable length of 150 meters for screened cables, or 300 meters for unscreened cables.

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Product Description:

The VLT 5042 frequency converter is built by Danfoss within the VLT 5000 Frequency Converters series. Designed for three-phase induction motors, the unit transforms fixed-frequency mains power into a variable output that allows speed, torque, and process flow to be matched to real-time production demands. In automated lines, this product controls conveyors, pumps, or mixers without mechanical throttling, reduces energy consumption, and supports the coordinated operation of multiple drives through its integrated control terminals and fieldbus compatibility.

Acceleration torque reaches 100% of the rated value, while a starting torque of 180% for 0.5 seconds allows loaded machines to overcome static friction immediately. Closed-loop precision is supported by an output frequency resolution of ±0.003 Hz, allowing precise speed adjustments. The drive processes setpoint changes within 3 ms, so upstream controllers experience little phase lag. Electrical efficiency is supported by a true power factor of 0.90, which limits reactive current in the supply conductors. Full-load operation is permitted at temperatures as low as 0 °C, while reduced-load service is permitted down to −10 °C. These operating characteristics support responsive control in medium-power applications that require stable motor speed under changing loads.

The converter can be mounted up to 1000 m above sea level without derating. Motor wiring may extend to 150 m when screened and up to 300 m when unscreened, providing flexibility for motors installed at a distance from the drive. The load-sharing link can span 25 m, while the brake connection can extend to 20 m. Control and serial-signal conductors support a maximum cross-sectional area of 1.5 mm², matching the capacity of their shield clamps. A short-circuit withstand rating of 100,000 A allows the converter to operate on high-capacity supply feeders when properly protected. The rated motor frequency of 50/60 Hz supports motors designed for common industrial power systems.

Acceleration Torque
100%
Max Altitude
1000 m
Max Brake Cable Length
20 m
Max Control Cable Cross-section
1.5 mm²
Max Load Sharing Cable Length
25 m
Max Motor Cable Length (screened)
150 m
Max Motor Cable Length (unscreened)
300 m
Max Serial Cable Cross-section
1.5 mm²
Max Short-circuit Rating
100,000 A
Min Ambient Temp (full Load)
0°C
Min Ambient Temp (reduced Load)
-10°C
Output Freq Resolution
±0.003 Hz
Product Type
VLT 5000
Rated Motor Frequency
50/60 Hz
Starting Torque (0.5 S)
180%
System Response Time
3 msec
True Power Factor
0.90

Frequently Asked Questions about VLT 5042:

Q: What is the acceleration torque capability of the VLT 5042 frequency converter?

A: The VLT 5042 provides 100% acceleration torque for demanding applications.

Q: What is the maximum allowable screened motor cable length for the VLT 5042?

A: This model supports a maximum screened motor cable length of 150 meters.

Q: What is the maximum short-circuit rating for the VLT 5042?

A: The VLT 5042 can tolerate a short-circuit rating up to 100,000 A.

Q: What is the minimum ambient temperature for full load operation on the VLT 5042?

A: It maintains full load operation at ambient temperatures as low as 0°C.

Q: What is the output frequency resolution of the VLT 5042 frequency converter?

A: The output frequency resolution is ±0.003 Hz for precise speed control.


Internal Product Review

  • ‘‘The VLT 5042 is a Danfoss VLT 5000 frequency converter with 180% starting torque and 100% acceleration torque. A 3 msec system response time and ±0.003 Hz output frequency resolution support precise drive control in demanding installations. Strong electrical performance makes this converter a dependable choice, highlighted by a 0.90 true power factor.’’

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