VLT 3011
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The VLT 3011 is a variable speed drive that operates with an input voltage of 3 x 380/400/415 V ±10% and an input frequency of 50/60 Hz. Manufactured by Danfoss and part of the VLT 3000 Variable Speed Drives series, it offers an efficiency of 96% at rated load. The drive supports a maximum motor cable length of 300 meters.
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Product Description:
The VLT 3011 is a frequency converter built by Danfoss for industrial automation and motor control. It operates with a three-phase input supply between 380 and 460 volts AC. The allowable input variation is ±10% of the nominal voltage. The supported input frequency range is from 48 hertz to 62 hertz. This ensures compatibility with standard grid supply conditions.
The VLT 3011 frequency converter can deliver an output from zero to 460 volts AC. The output frequency is programmable from zero to 120 hertz. It can extend to 400 hertz when required for special duty. The rated motor power is 11 kilowatts, which equals 15 horsepower. The rated continuous current is specified at 24 A. The system can handle an overload of 150% of the rated current for up to 60s. The displacement power factor remains above 0.95 during operation. The VLT 3011 frequency converter achieves an efficiency level of 96% at full load. This reduces energy waste and improves system performance. The unit safety is enhanced with electronic thermal protection and thermistor input. Programmable start and stop functions allow controlled drive sequencing. Ramp times for acceleration and deceleration are adjustable from 0.1 seconds to 3600 seconds. The switching frequency depends on the applied voltage and can reach two to five times per minute.
The environmental rating of the VLT 3011 frequency converter supports industrial use. The unit operates within a temperature range of -10°C to +45°C without requiring derating. The storage temperature limits are between -25°C and +65°C. Relative humidity of up to 95% is acceptable under non-condensing conditions. Installation altitude is supported up to 1000 meters without derating. The adjustment is required above this level. The vibration resistance has been tested up to 0.7 g.
Frequently Asked Questions about VLT 3011:
Q: How does the VLT 3011 frequency converter manage overload conditions?
A: The VLT 3011 frequency converter permits 150% rated current for 60 seconds. This safeguards motor performance during heavy acceleration or torque peaks.
Q: What output frequency range supports the VLT 3011 frequency converter?
A: The VLT 3011 frequency converter delivers output from 0 to 400 Hz. This allows use with nonstandard motors requiring higher-than-normal operating speeds.
Q: How does the VLT 3011 frequency converter optimize energy efficiency?
A: The VLT 3011 frequency converter achieves 96% efficiency at full load. This reduces heat generation and minimizes energy loss in continuous-duty cycles.
Q: Which thermal protections are built into the VLT 3011 frequency converter?
A: The VLT 3011 frequency converter uses a thermistor input and electronic thermal control. These features protect connected motors against overheating damage.
Q: How do ramp settings enhance VLT 3011 frequency converter control?
A: The VLT 3011 frequency converter supports 0.1 to 3600-second ramps. This enables precise motor acceleration or deceleration under application demands.
