Bonfiglioli GVX2000-7.5-T Silectron Frequency Converter

Product Overview

The Bonfiglioli GVX2000-7.5-T is a Silectron frequency converter rated at 7.5 kW for 380 V supply. It converts fixed electrical input into variable voltage and frequency output so that motor speed and torque can follow process demand. The drive is intended for industrial machine control systems.

The converter is used in pumps, fans, conveyors, mixers, and general machinery. Correct installation and commissioning are important for stable operation. The device should be installed by qualified personnel who understand electrical safety and motor control.

Electrical Design and Construction

The converter contains a power section, a control section, and a user interface. The power section rectifies the supply, stores energy in the direct current link, and switches the output to create a variable frequency waveform. The control section processes references and protection logic.

Cooling clearance must be respected. The converter should be mounted on a rigid surface with adequate air flow. Power and control cables should be separated. Shielding and grounding are important for electromagnetic compatibility.

Control and Motor Operation

The converter supports motor control functions for industrial duties. Parameters allow setting of acceleration and deceleration ramps, minimum and maximum frequency, current limits, and motor data. Vector control can improve torque response.

The motor and converter must be matched. Motor nameplate data should be entered during commissioning. The control mode should suit the load. For pumps and fans, ramps should avoid hydraulic or mechanical shock.

Installation and Commissioning

Installation begins with checking the supply, motor, and environmental conditions. The converter should be mounted with sufficient clearance. Power cables should be connected with correct phase sequence and grounding. Control cables should be shielded where required.

Commissioning should start with parameter setup and motor data. Rotation direction should be checked without load where possible. Analog scaling, digital input functions, and fault responses should be configured.

Operation and Monitoring

During operation, the keypad and display provide status and fault information. Operators should monitor motor current, speed, and temperature. Abnormal vibration, noise, or overheating should be investigated.

Operating limits should protect the motor and machine. Current limits, torque limits, and ramps should match the load. If the process changes, the settings should be reviewed.

Protection and Reliability

The converter includes protection functions for overcurrent, overvoltage, undervoltage, motor overload, and overtemperature. Fault causes should be identified before reset.

Reliability depends on proper grounding, shielding, cooling, and cable selection. Long motor cables can require filters or reactors.

Maintenance and Service

Maintenance should include periodic inspection of cooling, terminals, fans, and enclosure filters. Power terminals should be checked after isolation and proof of safe condition. The direct current link must be allowed to discharge before service.

Service work should be performed by qualified personnel. Replacement drives should be configured to match the machine.

Integration and Selection Summary

The GVX2000-7.5-T converter can be integrated into industrial machines that require adjustable motor speed at 7.5 kW.

Selection should confirm the model GVX2000-7.5-T, 7.5 kW rating, 380 V supply, motor current, load type, duty cycle, and ambient conditions.