178B0768

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The 178B0768 is a variable frequency drive with a voltage range of 3 × 200-240 V and a nominal output frequency of 0-1000 Hz. Manufactured by Danfoss as part of the VLT 6000 HVAC Drives series, it operates in temperatures from 0°C to 45°C. It supports a motor cable length of 500 feet when shielded.

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Product Description:

The Danfoss VLT 6000 series includes the 178B0768, a flexible HVAC drive that can manage speed accurately and save energy for a wide variety of ventilation, air conditioning, and associated tasks. This drive works with voltages between 3 × 200 and 240 V and is built to work well in a variety of electrical settings.

It can also handle temperatures up to 45°C, so it may be used in tough installation situations. One thing that stands out about the 178B0768 is that it may be used with several types of enclosures, such as Chassis, NEMA 1, and NEMA 12. This makes it easy to fit into many types of systems and protects against environmental variables, no matter what level of enclosure grades the application needs. The drive can produce a nominal frequency of 0 to 1000 Hz, which gives it a wide range of operating speeds for making the best modifications to motor speed. The 178B0768 has innovative features that make the system run better and use less energy.

The Automatic Motor Adaptation (AMA) function makes performance even better by making sure that the drive automatically adjusts to the motor's characteristics for the best use. The drive has a complex PID regulator built into it. This lets users link two feedback signals, which is great for zoning applications, and define two separate set-points. With this level of control, the 178B0768 can keep systems running smoothly and efficiently even in the most complicated and changing situations. For safety reasons, it's vital to remember that even while the drive may stop the motor using digital or bus instructions or local controls, these features don't ensure that the motor won't start by accident when the drive is still plugged into the mains.

Altitude Limit
3300 feet
Durable
Yes
Enclosure Options
Chassis, NEMA 1, NEMA 12
Lasting Longevity
Yes
Max Ambient Temperature
45°C
Max Relative Humidity
95% non-condensing
Min Ambient Temperature
0°C (Full Operation), -10°C (Reduced)
Motor Cable Length (shielded)
500 feet
Motor Cable Length (unshielded)
1000 feet
Nominal Output Frequency
0-1000 Hz
Power Supply
24 V DC ±15%
Speed Accuracy (open Loop)
Max error 0.5% of actual speed (>1500 rpm)
Speed Control Range (open Loop)
1:100 of synchronous speed
Vibration Test
0.7 g RMS, 18-1000 Hz, IEC 68-2-34/35/36
Voltage Range
3 × 200-240 V

Frequently Asked Questions about 178B0768:

Q: What is the voltage range supported by the 178B0768?

A: This device supports a voltage range of 3 × 200-240 V, making it suitable for low-voltage, three-phase systems.

Q: What enclosure options are available for this model?

A: The 178B0768 is available in Chassis, NEMA 1, and NEMA 12 enclosures, providing flexibility for different installation environments and protection needs.

Q: What is the maximum allowable ambient temperature for the 178B0768?

A: The maximum ambient temperature for full operation is 45°C, ensuring reliable performance in warm environments.

Q: What are the minimum ambient temperature requirements?

A: The device operates fully at a minimum temperature of 0°C and can function at reduced capacity down to -10°C.

Q: What is the maximum relative humidity this device can withstand?

A: The 178B0768 can handle up to 95% relative humidity, provided the environment is non-condensing.


Internal Product Review

  • ‘‘The 178B0768 HVAC drive can handle voltages between 3 and 200–240 V, works at temperatures up to 45°C, and comes in three different enclosures: Chassis, NEMA 1, and NEMA 12. The Danfoss VLT 6000 HVAC Drives family includes this model. It has a nominal output frequency of 0–1000 Hz.’’

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