178B1655
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MPN: FCD303PT4P66STR1DCF00T52C0
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The Danfoss 178B1655 drive, part of the FCD 300 Micro Drives series, operates with a three-phase input voltage of 380–480V ±10% at 50/60Hz. It features an IP66 enclosure class, a gross weight of 6.5 kg, and measures 300mm in height, 192mm in width, and 145mm in depth. The drive includes a display connector.
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Product Description:
The 178B1655 Frequency Converter delivers reliable motor control with 1.0 kVA output power. It supports precise speed regulation in open and closed loop modes. The integrated thermal protection ensures safe operation. The compact design and low power loss make it efficient.
The 178B1655 frequency converter from Danfoss delivers a typical shaft output of 0.37 kW or 0.50 HP. It combines performance with portability with compact construction and a weight of 5.8 kg. The unit is suitable for industrial environments requiring dependable performance, speed control and integrated protection features. The converter operates on a three phase 380 – 480 V input supply with an input current of 1.2 A and a maximum short term current of 1.9 A for 60 seconds. On the output side, it delivers a nominal current of 1.4 A and a peak current of 2.2 A for 60 seconds. The design allows a motor cable cross section of 4 mm²/AWG 10 while the power side supports the same range. The converter ensures low power loss with a value of 22 W at maximum load that helps maintain energy efficiency during operation. An electronic thermal motor protection in this converter prevents overload conditions by monitoring operating parameters. The temperature monitoring system cuts off the converter when the internal power module reaches 100 °C.
The speed control of the 178B1655 frequency converter is precise with an open loop range of 1:15 of synchronous speed and a closed loop range of 1:120 of synchronous speed. The open loop speed accuracy lies between 90 and 3600 rpm with a maximum error of ±23 rpm while closed loop operation offers 30 to 3600 rpm with an accuracy of ±7.5 rpm. These specifications make it versatile for different load and process requirements.
Frequently Asked Questions about 178B1655:
Q: How does the 178B1655 frequency converter perform in low-to-mid speed open loop applications?
A: It delivers speed accuracy between 90–3600 rpm with a maximum error of ±23 rpm. This ensures steady motion even in basic control systems without feedback loops.
Q: How does the 178B1655 frequency converter maintain overload protection during high-stress motor operations?
A: It uses electronic thermal protection to monitor key thermal parameters. If the power module exceeds 100 °C, the converter safely shuts down to avoid damage.
Q: How does the 178B1655 frequency converter support fine speed control in closed loop configurations?
A: It operates with a 1:120 speed range and ±7.5 rpm precision. This enables exact control in feedback-driven systems under variable load profiles.
Q: How does the 178B1655 frequency converter balance energy efficiency with performance in compact installations?
A: It maintains low power loss at just 22 W under maximum load. This reduces thermal buildup and supports efficient operation in tight electrical enclosures.
Q: What cabling requirements should be considered when integrating the 178B1655 frequency converter into motor systems?
A: It supports 4 mm² or AWG 10 cable cross sections for both motor and power terminals. This simplifies wiring while ensuring electrical reliability under full load.
