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.
What does OCd over current mean on Gefran Inverter?
If a Gefran Inverter displays an 'OCd over current' error, it could be due to: * Deceleration time being too short. To resolve this: * Set the longer acceleration time.
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.
What to do for IPL input phase loss on Gefran Inverter?
If a Gefran Inverter displays an 'IPL input phase loss' error, the possible causes are: * Wiring loose in the inverter input terminal. * Momentary power loss. * Input voltage imbalance. To solve this issue: * Check input wiring and tighten screws. * Check the power supply.
What causes OL1 Motor overload on a Gefran Inverter?
If a Gefran Inverter displays an 'OL1 Motor overload' error, it could be due to: * Voltage setting in V/f mode being too high, resulting in over-excitation of the motor. * Motor rated current (02-01) set incorrectly. * Load being too heavy. To resolve this: * Check the V/f curve. * Check the motor rated current. * Check and reduce the motor load, also check the operation duty cycle.
How do I resolve OH1 Heatsink overheat on my Gefran Inverter?
If a Gefran Inverter displays an 'OH1 Heatsink overheat' error, it could be due to: * Ambient temperature being too high. * A failed cooling fan. * Carrier frequency set too high. * Load being too heavy. To resolve this: * Install a fan or AC to cool the surroundings. * Replace the cooling fan. * Reduce the carrier frequency. * Reduce the load or measure the output current.
What does SC short circuit mean on a Gefran Inverter?
If your Gefran Inverter shows an 'SC short circuit' error, the possible causes are: * Short circuit or ground fault (08-23 = 1). * Damaged motor (insulation). * Wire damage or deterioration. To solve this issue: * Check the motor wiring. * Disconnect the motor and try running the inverter.
Why is my Gefran Inverter showing UV Under voltage?
If a Gefran Inverter displays a 'UV Under voltage' error, it could be due to: * The input voltage being too low. * Input phase loss. * Acceleration time set too short. * Input voltage fluctuation. * A damaged pre-charge contactor. * Incorrect DC bus voltage feedback signal value. To resolve this: * Check the input voltage. * Check input wiring. * Increase acceleration time. * Check the power source. * Replace the pre-charge contactor. * Replace the control board or the entire inverter.
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).
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.
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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