175Z7055
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The 175Z7055 is an advanced drive manufactured by Danfoss. Part of the VLT 6000 HVAC Drives series, it operates on a supply voltage range of 380-480 V ±10% and features an enclosure class of IP54. The drive has a maximum output current of 35.2A at 400 V and can achieve a maximum output frequency of 1000 Hz.
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Product Description:
The 175Z7055 Frequency Converter is suitable for various industrial applications requiring robust performance, consistent torque delivery and reliable input/output handling. The converter is designed to optimize motor function and long term operation.
The 175Z7055 frequency converter from Danfoss features a starting torque of 110 % for 1 minute. For demanding operations, it supports a high break away torque (parameter 110) that delivers a peak torque of 160 % for 0.5 seconds. The acceleration torque is rated at 100 % while the overload torque is also 110 %. The converter offers exceptional analog input flexibility by featuring two programmable input channels that can be configured for either analog voltage or thermistor inputs. These inputs are accessible via terminals 53 and 54 that enables users to select between different types of sensors or signals depending on their application needs. The current input accepts a 4 – 20 mA scalable current with an input resistance of 200 Ω. The scanning time per input is 3 milliseconds that ensures rapid data acquisition and control response. The device also includes a 24 V DC supply on terminals 12 and 13 with a maximum load of 200 mA. The ground terminals for this supply are 20 and 39. This auxiliary power feature supports external sensor or control system operation.
The 175Z7055 frequency converter supports long cable installations that allows motor cable lengths up to 150 meters when using screened cables and up to 300 meters with unscreened cables. This is ideal for large industrial layouts. The frequency control of this model is highly accurate with an output range of 0 to 1000 Hz and resolution of ± 0.003 Hz. This fine resolution supports smooth and responsive motor operation across varying load conditions.
Frequently Asked Questions about 175Z7055:
Q: How does the 175Z7055 frequency converter handle torque surges during high-friction or static load startups?
A: It delivers 160% break away torque for 0.5 seconds, enabling smooth starts under locked-rotor or high-resistance conditions. This prevents stalling during critical load transitions in heavy-duty cycles.
Q: How does the 175Z7055 frequency converter maintain signal accuracy when managing high-resolution speed control?
A: It offers an output frequency range up to 1000 Hz with a resolution of ± 0.003 Hz. This allows precise motor response under variable speed demands, even in fine motion applications.
Q: How does the analog input system of the 175Z7055 frequency converter adapt to multiple sensor configurations?
A: It includes two scalable voltage or thermistor inputs and a dedicated current input for broad analog signal support. This makes it easy to integrate temperature feedback, position sensors, or flow meters.
Q: What level of control responsiveness can be expected from the 175Z7055 frequency converter in fast-paced automation tasks?
A: The converter features a 3 ms scan time per analog input, enabling quick capture of analog signal changes. This responsiveness is essential for real-time process feedback and dynamic load compensation.
Q: How does the 175Z7055 frequency converter support remote motor installations in large-scale plant environments?
A: It allows up to 150 m motor cable length with screened cables, and 300 m with unscreened. This ensures reliable control signal transmission over extended distances without performance degradation.
