178B4810
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MPN: VLT6122HT4C20STR3DLF00A00C0
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The Danfoss 178B4810 Drive, a part of the VLT 6000 HVAC Drives series, operates within a power range of 0.55 to 18.5 kW. It features input voltage options of 380-480V (3-phase) and 200-240V (1/3-phase), an output frequency range of 0-1000 Hz, and a built-in EN 55011 1A EMC filter. This IP20-enclosed drive is short-circuit proof.
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Product Description:
The 178B4810 is a VLT 6000 HVAC drive with product code VLT6122HT4C20STR3DLF00A00C0 that is designed by Danfoss. It operates with a three-phase power supply and supports a mains voltage range of 380-480V ± 10% at 50/60Hz. The drive’s nominal power rating is 90 kW and continuous current rating of 177 A, as well as 195 A peak value for 1 minute.
The 178B4810 drive is configured with standard hardware and comes with an RFI noise filter for interference free operations. Its LCP control panel allows users to easily manage settings and monitor system performance. The unit works at a power factor of 0.90 and it features an overload torque rating of 110% for 1 minute as well as 160% for 0.5 seconds, while provides a starting torque of 110%. The maximum short-circuit current for this unit is rated as 100.000 A and it can handle voltage imbalances of up to ±3.0%. This 178B4 drive offers 8 programmable digital inputs with voltage level from 0 - 24V DC (PNP positive logics) and possess 2 analog inputs with a scalable voltage range of 0 - 10V DC along with a current range of 0/4 - 20 mA. For pulse inputs, it supports 3 programmable inputs, with maximum frequencies of 5 kHz for terminal 17 and 20 kHz for terminals 29/33.
The 178B4810 drive supports 125 HP of shaft output and its maximum input current reaches up to 174 A through a minimum cable thickness of 250 AWG. It offers 0.98% of efficiency at the rated frequency and its power loss at maximum load is recorded as 1766 W. This 178B4 drive comes in an IP-20 rated enclosure with weigh 54 kg and an optional IP-54 rating that exceeds its weight to 77 kg.
Frequently Asked Questions about 178B4810:
Q: How does the RFI noise filter in the 178B4810 drive improve performance?
A: The built-in RFI filter minimizes electromagnetic interference, ensuring stable operation in sensitive environments. This helps in maintaining compliance with industrial EMC standards.
Q: Why is the overload torque rating of 110% for 1 minute useful in the 178B4810?
A: This feature allows the drive to handle sudden load surges without tripping. It enhances motor reliability in demanding HVAC and automation tasks.
Q: How does the ±3% voltage imbalance tolerance of the 178B4810 benefit the motor?
A: It prevents excessive current stress on windings caused by uneven voltage supply. This protection increases motor lifespan and reduces chances of overheating.
Q: Why are programmable digital inputs important in the 178B4810 drive?
A: They allow flexible integration with various sensors, switches, and control systems. This adaptability makes the drive suitable for customized automation setups.
Q: What is the advantage of having both current (0/4–20 mA) and voltage (0–10 V) analog inputs?
A: It provides compatibility with different types of process signals. This ensures easy integration with existing instrumentation in HVAC and industrial plants.
