What to check for Speed ref loss [SRL] on Gefran Inverter?
A 'Speed reference loss' alarm on a Gefran Inverter occurs if the difference between the speed regulator reference and the actual motor speed is more than 100 rpm, typically because the drive is in the current limit condition. Check that the load is not excessive.
What does External fault [EF] mean on Gefran Inverter?
An 'External fault' alarm on your Gefran Inverter indicates that a digital input programmed as an external alarm does not have the +24V voltage available on the terminal. To resolve this, check that the terminal screws are tight.
How to fix Overspeed [OS] alarm on Gefran Inverter?
A 'Motor overspeed' alarm on a Gefran Inverter indicates that the motor speed exceeds the limits set in the parameter. To resolve this, limit the speed reference and check that the motor is not driven in overspeed during rotation.
What to check for Opt Bus fault [OPTB] on Gefran Inverter?
An 'Opt Bus fault' alarm on your Gefran Inverter indicates an error in the configuration stage or a communication error. For configuration errors, check the configuration of the Bus communication, Bus type, Baudrate, and address parameter settings. For communication errors, verify wiring, resistance of terminations, interference immunity, and timeout settings.
What does Phase loss [PHL] mean on a Gefran Inverter?
A 'Phase loss' alarm on a Gefran Inverter indicates a power phase loss. Check the mains voltage and whether any protections upstream of the drive have been tripped.
Why does my Gefran Inverter show Overvoltage [OV]?
The Gefran Inverter displays an overvoltage alarm because of a DC link overvoltage condition. This happens when energy recovered from the motor causes the voltage arriving at the drive power section to exceed the maximum threshold, relative to the Mains voltage parameter setting. To resolve this, check the status and cabling of the braking resistors to ensure there are no interruptions. Always use a braking resistor connected to the appropriate terminals to dissipate the energy.
What causes Desaturation [DES] error on Gefran Inverter?
The 'Desaturation' alarm on your Gefran Inverter indicates instantaneous overcurrent in the IGBT bridge. Try switching the drive off and then on again. Also, check the condition of the braking resistor isolation, ensuring there are no earth leakages. If the alarm persists, contact the technical service center.
What does Intakeair OT [IOT] mean on a Gefran Inverter?
The 'Intakeair OT' alarm on your Gefran Inverter indicates that the input air temperature is too high. You should check the fan operation, ensure that panel cooling air openings are unobstructed, and verify the temperature in the electrical panel.
How to troubleshoot Bres overload [BOL] on Gefran Inverter?
A 'Braking resistor overload' alarm on a Gefran Inverter means that the current absorbed by the resistor is greater than its rated current. Check the size and condition of the braking resistor.
How to resolve Motor overload [MOL] on a Gefran Inverter?
A 'Motor overload' alarm on a Gefran Inverter indicates that the current absorbed during operation is greater than that specified on the motor data plate. To resolve this, reduce the motor load or increase the size of the motor.
Details general warnings, electrical shock, and fire/explosion hazards.
Overview of the ADL300's power and regulation sections and their connections.
Covers shielding connection and EMC guidelines for the power section wiring.
Shows wiring diagrams for motor connections and optional braking resistors.
Describes feedback connections for ADL300B series and shielding recommendations.
Illustrates connections for SinCos, SE, and EnDat encoders.
Shows connections for EnDat Full Digital and digital encoders.
Details digital encoder connections and Sinusoidal SinCos Encoder with repetition.
Details motor data setup, including rated voltage, current, speed, and pole pairs.
Explains encoder setup, direction, pulses, and the autotuning/autophasing procedures.
Explains brake timing sequences and emergency power supply modes.
Lists and explains various alarm codes displayed by the drive.
Details causes and solutions for speed feedback loss alarms based on encoder type.
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