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175Z4318 Danfoss

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The Danfoss 175Z4318 belongs to the VLT 5000 Frequency Converters series and features a compact IP20 enclosure. It operates with a three-phase 380-500 V mains voltage and offers power sizes of 18.5 kW at 110% torque and 15 kW at 160% torque. The unit includes a process control card, Profibus DP V0/V1 fieldbus support, and comes standard with a brake chopper.

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Product Description:

The 175Z4318 is a frequency converter produced by Danfoss as part of the VLT 5000 Frequency Converters series. This drive converts fixed three-phase input power into variable output power that allows asynchronous motors to match process demands, improving energy use and motion control in industrial plants. It serves as the central actuator in pumping stations, conveyors, and mixing equipment where consistent torque regulation and programmable speed profiles are required.

The converter accepts a 380–500 V three-phase supply, so it can be connected directly to common industrial mains without a step-down transformer. Communication with supervisory controls is available through Profibus DP V0/V1 at 12 Mbaud; this serial bus permits parameter access and status reporting over a high-speed industrial network. With an overload capacity of up to 110 percent torque, the drive can deliver 18.5 kW of mechanical power for medium-sized production motors. Electromagnetic emissions are suppressed by the integrated Class A1 and Class B filter, reducing conducted noise to meet applicable installation categories. The electronics are contained in a compact IP20 housing designed for cabinet mounting while still preventing accidental contact with live parts.

To support rapid deceleration cycles, the unit has a standard configuration with a brake chopper, allowing excess motor energy to be directed to an external resistor instead of remaining in the DC link. During overload periods of up to 160 percent torque, the unit sustains 15 kW, providing additional capacity for starting heavy centrifugal loads. Control algorithms reside on a process control card, enabling PID functions and local setpoint handling for process-oriented applications. The unit uses uncoated circuit boards, which are suitable for clean electrical rooms where conformal protection against moisture and airborne contaminants is unnecessary. A front-mounted display provides direct access to operating values and local adjustments. The accessible interface allows operating parameters to be reviewed and modified without requiring a separate display device.

Application Option
No option built in
Coating
Non coated boards
Control Type
Process control card
Display Unit
Display supplied
Enclosure
Compact IP20
Fieldbus
Profibus DP V0/V1 12 Mbaud
Hardware
Standard with brake chopper
Mains Voltage
380-500 V three phase supply
Power Size (110% Torque)
18.5 kW
Power Size (160% Torque)
15 kW
Product Type
VLT 5000
RFI Filter Performance
Class A1 and B filter

Frequently Asked Questions about 175Z4318:

Q: What mains voltage does the 175Z4318 VLT 5000 frequency converter support?

A: The Danfoss 175Z4318 operates on a 380-500 V three-phase supply.

Q: Does the 175Z4318 come with a brake chopper included?

A: This model features a built-in brake chopper as standard hardware.

Q: Which fieldbus interface is supported by the 175Z4318?

A: The 175Z4318 supports Profibus DP V0/V1 communication at up to 12 Mbaud.

Q: What is the enclosure protection level of the 175Z4318?

A: This unit provides an enclosure rating of compact IP20 for installation protection.

Q: What are the power ratings for the 175Z4318 at different torque levels?

A: The 175Z4318 has a maximum power size of 18.5 kW at 110% torque and 15 kW at 160% torque.


Internal Product Review

  • ‘‘The 175Z4318 is a Danfoss VLT 5000 frequency converter built with a process control card and a compact IP20 enclosure. Profibus DP V0/V1 at 12 Mbaud and a standard brake chopper give the unit strong integration potential and dependable drive control. Operation on 380-500 V three-phase supply with 18.5 kW at 110% torque makes this converter a strong fit for demanding process applications.’’

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