gefran VDI100 Series

Questions and Answers:

K
kbishopAug 29, 2025
Why am I getting a UV Under voltage error on my gefran VDI100 Inverter?
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  lisagomezAug 29, 2025
  If your Gefran Inverter is showing a UV (Under Voltage) error, it could be due to several reasons. The input voltage might be too low, so check the input voltage. There might be an input phase loss, so check the input wiring. The acceleration time might be set too short, so increase the acceleration time. Input voltage fluctuation could also be the cause, so check the power source. The pre-charge contactor could be damaged, so replace the pre-charge contactor. Also, the DC bus voltage feedback signal value might be incorrect, so replace the control board or the entire inverter.
A
andrewhuntAug 28, 2025
What does OL2 Inverter overload mean on my gefran VDI100?
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  ahoffmanAug 28, 2025
  If your Gefran Inverter displays an OL2 (Inverter Overload) error, it could be due to a few reasons. The voltage setting in V/f mode might be too high, causing over-excitation of the motor; check the V/f curve. The inverter rating might be too small; replace the inverter with a larger rating. Finally, the load might be too heavy; check and reduce the motor load, and check the operation duty cycle.
A
Alyssa DavisAug 27, 2025
What causes an OL1 Motor overload error on a Gefran Inverter?
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  John LeeAug 27, 2025
  If your Gefran Inverter displays an OL1 (Motor Overload) error, it could be due to a few reasons. The voltage setting in V/f mode might be too high, causing over-excitation of the motor; check the V/f curve. The motor rated current setting might be incorrect; check the motor rated current. Finally, the load might be too heavy; check and reduce the motor load, and check the operation duty cycle.
A
Anne IbarraAug 27, 2025
What causes a GF Ground fault error on my gefran VDI100?
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  rachel69Aug 27, 2025
  If you're seeing a GF (Ground Fault) error on your Gefran Inverter, it could be due to several reasons. The motor might be damaged (insulation failure), so replace the motor. There could also be damage or deterioration to the wiring, so check the motor wiring. A defect in the inverter's DCCT sensors could also cause this; check the resistance between the cables and ground. Also, try reducing the carrier frequency.
P
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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Laurie RoyAug 25, 2025
What to do if my gefran VDI100 Inverter displays an OC over current error?
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  Nicholas HodgesAug 25, 2025
  An OC (Over Current) error on your Gefran Inverter can occur if the acceleration or deceleration time is too short; try extending these times. It can also happen if there's a contactor on the inverter output side, so check the motor wiring. If the motor is either a special type, or larger than the inverter's rated value, disconnect the motor and try running the inverter. A short circuit or ground fault could also be the cause; in this case, disconnect the motor and attempt to run the 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 Cblage

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 Opration

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