YASKAWA V1000 Serie Guia De Inicio Rapido página 58

LED Display AL FLT
Safe Disable Fault
Output Phase Loss
Overcurrent
Heatsink Overheat
or
Motor Overload
Drive Overload
DC Overvoltage
Input Phase Loss
Braking Transistor
Fault
DC Undervoltage
Controller Under-
voltage
DC Charge Circuit
Fault
Operator Programing Errors
An Operator Programming Error (OPE) occurs when an inapplicable parameter is set or
an individual parameter setting is inappropriate. When an OPE error is displayed, press
the ENTER button to display U1-18 (OPE fault constant). This monitor will display the
parameter that is causing the OPE error.
Cause
Drive output is disabled while only one of the Safe
Disable inputs is open. (normally both input signals
H1 and H2 should be open)
• One channel is internally broken and does not
switch off, even if the external signal is removed.
• Only one channel is switched off by the upper con-
troller.
Output cable is disconnected or the motor winding is
damaged. Loose wires at the drive output. Motor is
too small (less than 5% of drive current).
Short circuit or ground fault on the drive output side
The load is too heavy. The accel./decel. times are too
short. Wrong motor data or V/f pattern settings. A
magnetic contactor was switched at the output.
Surrounding temperature is too high. The cooling fan
has stopped. The heatsink is dirty. The airflow to the
heatsink is restricted.
The motor load is too heavy. The motor is operated at
low speed with heavy load. Cycle times of accel./
decel. are too short. Incorrect motor rated current has
been set.
The load is too heavy. The drive capacity is too small.
Too much torque at low speed.
DC bus voltage rose too high. The deceleration time
is too short. Stall prevention is disabled1. Braking
chopper / resistor broken. Unstable motor control in
OLV. Too high input voltage.
Input voltage drop or phase imbalance. One of the
input phase is lost. Loose wires at the drive input.
The internal braking transistor is broken.
The voltage in the DC bus fell below the undervolt-
age detection level (L2-05). The power supply failed
or one input phase has been lost. The power supply is
too weak.
The drives controller power supply voltage is too low.
The charge circuit for the DC bus is broken.
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7 Troubleshooting
Corrective Action
• Check the wiring from the upper controller and make
sure that both signals are set correctly by the controller.
• If the signals are set correctly and the alarm does not dis-
appear, replace the drive.
• Check the motor wiring.
• Make sure all terminal screws in the drive and motor are
properly tightened.
• Check the motor and drive capacity.
• Check the output wiring and the motor for short circuits
or broken insulation. Replace the broken parts.
• Check the machine for damages (gears, etc.) and repair
any broken parts.
• Check the drive parameter settings.
• Check the output contactor sequence.
• Check the surrounding temperature and install cooling
devices if necessary.
• Check the drive cooling fan.
• Clean the heatsink.
Check the airflow around the heatsink.
• Reduce the motor load.
• Use a motor with external cooling and set the correct
motor in parameter L1-01
• Check the sequence.
• Check the rated current setting.
• Check the load.
• Make sure that the drive is big enough to handle the load.
• The overload capability is reduced at low speeds. Reduce
the load or increase the drive size.
• Increase the deceleration time.
• Enable stall prevention by parameter L3-04.
• Make sure the braking resistor and braking chopper are
working correctly.
• Check motor parameter settings and adjust torque and
slip compensation, AFR and hunting prevention as
needed.
• Make sure that the power supply voltage meets the drives
specifications.
• Check the power supply.
• Make sure that all cables are properly fixed to the correct
terminals.
• Cycle the power supply.
• Replace the drive if the fault reoccurs
• Check the power supply.
• Make sure, that the power supply is strong enough.
• Cycle power to the drive. Check if the fault reoccurs.
• Replace the drive if the fault continues to occur.
• Cycle power to the drive. Check if the fault reoccurs.
• Replace the drive if the fault reoccurs.