gefran VDI100 Series User Manual (English)

Questions and Answers:

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Pamela StewartAug 25, 2025
Why does my gefran VDI100 Inverter show an OCA over current error?
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  Richard PhillipsAug 26, 2025
  If your Gefran Inverter is showing an OCA (Over Current) error, it might be because the acceleration time is too short; try setting a longer acceleration time. The motor might be too big for the inverter; if so, consider changing to a larger inverter. There could also be a short circuit between the motor winding and shell, so examine the motor. Another potential cause is a short circuit between the motor wire and ground; in this case, check the wire. Finally, a broken IGBT module can trigger this error; if you suspect this, replace the IGBT module, and please contact Gefran Technical Assistance.
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Ryan JohnsonAug 22, 2025
Why does my gefran VDI100 show an OV Over voltage error?
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  mark83Aug 23, 2025
  If the Gefran Inverter displays an OV (Over Voltage) error, it could be due to several reasons. The deceleration time might be set too short, causing regenerative energy to flow back from the motor. Try increasing the deceleration time. Alternatively, the input voltage to the inverter may be too high; in this case, reduce the input voltage or install an AC line reactor. Also, remove any power factor correction capacitors that may be in use. In some cases, excessive braking load, defective braking transistor/resistor, or incorrect speed search parameters can cause this, so use a dynamic braking unit, replace the braking transistor/resistor, or adjust the speed search parameters, respectively.
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sarahcoleSep 17, 2025
What does CF08 Motor control fault mean on gefran VDI100 Inverter?

gefran VDI100 Series Specifications

General

Brand	gefran
Model	VDI100 Series
Category	Inverter
Language	English

Summary

1. Safety Precautions

1.2. Before Supplying Power to the Inverter

Ensures correct wiring and warns against connecting input supply to output terminals.

1.3. Wiring / Câblage

Details proper grounding, RCD compliance, and dielectric withstand test precautions.

1.4. Before Operation

Covers model matching, carrier frequency adjustment for long cables, and cover installation.

1.6. Operation / Opération

Provides guidelines for safe inverter operation, including cover installation, motor connection, and fan operation.

1.7. Maintenance, Inspection and Replacement

Details procedures for maintenance, inspection, and replacement, emphasizing safety precautions.

2. Model Description

2.1. Nameplate Data

Essential for verifying inverter nameplate and ensuring correct rating for application.

2.2. Inverter Models – Motor Power Rating (HD – Heavy Duty)

Lists inverter models and their corresponding applied motor power ratings for Heavy Duty applications.

3. Environment and Installation

3.1. Environment

Specifies operating temperature, storage, humidity, altitude, installation site, and shock conditions.

3.2. Installation

Details inverter installation in an upright position and required surrounding space for heat dissipation.

3.3. External View

Illustrates the external appearance of different inverter sizes, labeling key components.

3.4. Warning Labels

Highlights important warning information located on the front cover that must be read upon installation.

3.5. Removing the Front Cover and Keypad

Explains how to remove the front cover to access terminals for wiring connections.

3.6. Wire Gauges and Tightening Torque

Provides UL approved wire gauges, crimp terminals, and fastening torque specifications.

3.8. General Wiring Diagram

Illustrates the basic power and control circuit terminal connections for the inverter.

3.10. Power Terminals

Specifies terminal connections for input power, inverter output, and ground.

3.12. Inverter Wiring

Provides wiring precautions, power input terminal details, and grounding requirements.

4. Keypad and Programming Functions

4.1. LED Keypad (KB-LED-VDI100)

Details the LED keypad display, its keys, and their functions for inverter operation and parameter setting.

4.2. LCD Keypad (KB-LCD-VDI100)

Explains the LCD keypad display, its keys, and the menu structure for programming and monitoring.

4.3. Parameters

Provides a comprehensive list of all inverter parameters categorized into groups for easy access and configuration.

Related product manuals

gefran VDI100-3110-KBX-4