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VACONX4C20020C Danfoss

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Internal Product Review

The VACONX4C20020C is a low-voltage drive with IP66 ingress protection and natural convection cooling. Modbus RTU support and five digital inputs make commissioning and control integration efficient in industrial service. A 0.75 kW high-overload rating gives the unit strong capability for demanding duty cycles.

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Product Description:

The VACONX4C20020C is an enclosed AC variable frequency drive produced by Danfoss within the Low Voltage VACON X Drives series. Designed for decentralized mounting near the motor, the unit converts three-phase mains power into a modulated output that varies induction motor speed for pumps, fans, and conveyors in industrial automation. Its rugged fascia and field I/O allow the drive to be installed directly on machinery without a protective cabinet, reducing wiring runs in washdown or dusty areas. The compact frame minimizes enclosure depth, making the device suitable for wall-mounted or machine-mounted service panels where installation space is limited.

The drive protects its internal DC link with a brake chopper that is triggered at 388 VDC, diverting surplus energy to a resistor during rapid deceleration. An independent overvoltage limit of 406 VDC shuts down the inverter if mains surges exceed the brake capacity, while an undervoltage threshold of 199 VDC prevents control loss during brownouts. For short-term overloads, the power stage can supply 4.2 A of output current, enabling temporary torque increases without overheating the drive. The unit has a peak power rating of 0.75 kW for operation with compatible 200 V class motors. These protection thresholds help prevent damage to the power stage when supply voltage or regenerated energy moves outside the permitted operating range.

Heat is dissipated solely by natural convection, so the aluminum heat sink must remain vertical to maintain unobstructed airflow across its cooling surfaces. The T0 frame measures 241 mm by 165 mm by 155 mm, providing a compact enclosure for mounting close to the controlled motor. The molded enclosure carries an IP66 rating, blocking dust and high-pressure water so the drive can be secured to process equipment without an additional housing. Five digital inputs, two relay outputs, and nine internal sequence steps allow the unit to execute standalone control routines without continuous commands from a supervisory system. The standard Modbus RTU network provides parameter access and operational data exchange with a compatible controller. An installation weight of 3.85 kg reduces the structural load placed on a wall, service panel, or machine frame.

Brake Activation
388 Vdc
Cooling Method
Natural Convection
Dc Bus Ov Trip
406 Vdc
Depth
155 mm
Digital Inputs
5
Frame Size
T0
Height
241 mm
High Overload Current
4.2 A
High Overload Power
0.75 kW
Ingress Protection
IP66
Relay Outputs
2
Sequence Steps
9
Standard Fieldbus
Modbus RTU
Uv Trip
199 Vdc
Weight
3.85 kg
Width
165 mm

Frequently Asked Questions about VACONX4C20020C:

Q: What cooling method does the VACONX4C20020C drive utilize?

A: The VACONX4C20020C uses natural convection for cooling and operates without external fans.

Q: What is the ingress protection rating of the VACONX4C20020C?

A: This model features an IP66 ingress protection rating, allowing it to resist dust and strong water jets.

Q: Which fieldbus protocol is standard on the VACONX4C20020C model?

A: The drive supports Modbus RTU as its standard fieldbus communication protocol.

Q: How many digital inputs and relay outputs does the VACONX4C20020C provide?

A: There are 5 digital inputs and 2 relay outputs available on this drive, facilitating flexible control options.

Q: What is the high overload current rating for the VACONX4C20020C drive?

A: The high overload current supported by the VACONX4C20020C is 4.2 A for demanding applications.

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