What causes FU fuse open on Gefran Inverter?
If a Gefran Inverter displays an 'FU fuse open' error, it could be due to:* IGBT damaged.* Short circuit output terminals.To resolve this:* Check IGBTs.* Check for short circuit at inverter output.* Replace inverter.
What to do if Gefran Inverter shows OV Over voltage?
If a Gefran Inverter shows an 'OV Over voltage' error, it could be due to:* Deceleration time being set too short, causing regenerative energy to flow back from the motor to the inverter.* The inverter input voltage being too high.* The use of power factor correction capacitors.* Excessive braking load.* A defective braking transistor or resistor.* Incorrectly set speed search parameters.To address this, consider the following:* Increase the deceleration time.* Reduce the input voltage to comply with requirements, or install an AC line reactor.* Remove any power factor correction capacitors.* Use a dynamic braking unit.* Replace the braking transistor or resistor.* Adjust the speed search parameters.
What causes GF Ground fault in Gefran Inverter and how to fix it?
If your Gefran Inverter displays a 'GF Ground fault' error, the possible causes are:* Damaged motor insulation.* Damaged or deteriorated wiring.* Defective inverter DCCT sensors.To solve this issue:* Replace the motor.* Check the motor wiring.* Disconnect the motor and attempt to run the inverter.* Check the resistance between cables and ground.* Reduce the carrier frequency.
How to troubleshoot OCA over current error on Gefran Inverter?
If a Gefran Inverter shows an 'OCA over current' error, it could be due to:* Acceleration time being too short.* The motor size being bigger than what the inverter is rated for.* A short circuit between the motor winding and shell.* A short circuit between the motor wire and ground.* A broken IGBT module.To resolve this:* Set a longer acceleration time.* Change to a bigger size of inverter.* Examine the motor.* Check the wire.* Replace IGBT module (Please contact Gefran Technical Assistance).
How to resolve CF01 Operator Communication Error 2 on Gefran Inverter?
If a Gefran Inverter displays an 'CF01 Operator Communica- tion Error 2', it could be due to:* LCD keypad and inverter can transmit data but transmission error occurs for more than 2 seconds.To resolve this:* Disconnect the operator and then reconnect.* Replace the control board.
What to do if Gefran Inverter displays CF20 Communication Failure?
If a Gefran Inverter displays an 'CF20 Communication Failure', it could be due to:* Maybe use two kind of communication type at the same time.To resolve this:* Check only use one kind of communication type.
What to do if Gefran Inverter displays run Switch for Motor1/ Motor2 error?
If a Gefran Inverter displays an 'run Switch for Motor1/ Motor2' error, it could be due to:* Executing a command for switching motor2 in running time.* Executing a command for switching motor in running time.To resolve this:* Revise the sequence control and switch motor in top time.
How do I fix CE communication error on Gefran Inverter?
If a Gefran Inverter displays an 'CE communication error', it could be due to:* Connection lost or wire broken.* Host stopped communicating.To resolve this:* Check connection.* Check host computer / software.
How to troubleshoot OPL output phase loss on Gefran Inverter?
If a Gefran Inverter displays an 'OPL output phase loss' error, the possible causes are:* Wiring loose in the inverter output terminal.* Motor rated current is less than 10% of the inverter rated current.To solve this issue:* Check output wiring and tighten screws.* Check motor and inverter rating.
Why am I getting OL2 Inverter overload on my Gefran Inverter?
If a Gefran Inverter displays an 'OL2 Inverter overload' error, it could be due to:* Voltage setting in V/f mode being too high, resulting in over-excitation of the motor.* Inverter rating being too small.* Load being too heavy.To resolve this:* Check the V/f curve.* Replace the inverter with a larger rating.* Check and reduce the motor load, also check the operation duty cycle.
General| Brand | gefran |
|---|---|
| Model | VDI100 |
| Category | Motherboard |
| Language | English |
Details Modbus network connection, pinouts, and ASCII data frame structure.
Explains Modbus RTU data frame structure, checksum calculation (LRC and CRC).
Details Modbus communication error codes for ASCII and RTU modes, including exception codes.
Defines register numbers, formats for command and monitor data, and their structure.
Explains Modbus commands for reading registers (03H) and loop back testing (08H).
Details Modbus commands for writing single (06H) and multiple registers (10H).
Lists Modbus parameters with their corresponding functions and register numbers for various groups.
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