YASKAWA FSDrive-MV1000 Series Instructions For Use Manual page 159

Digital Operator Display
PGo
Cause
PG cable is disconnected.
PG cable wiring is incorrect.
PG has no power.
PG encoder brake is clamped shut.
Digital Operator Display
PGoH
Cause
PG cable is disconnected.
Digital Operator Display
SEr
Cause
Speed Search parameters are set to the wrong
values.
Digital Operator Display
SYNC
Cause
The drive input main circuit voltage (frequency)
is not detected correctly.
Commercial synchronous switching is not
completed within the time limit (n7-76).
The switch performs an operation different from
the command (DO) from the drive.
Digital Operator Display
TME
Cause
Cooling fan fault possibly due to inadequate
cooling airflow
The intake filter is soiled.
Parameter setting error
Thermistor fault and disconnected signal line
Digital Operator Display
TME1
Cause
Cooling fan fault possibly due to inadequate
cooling airflow.
The intake filter is soiled.
Parameter setting error
Thermistor fault and disconnected signal line
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
PG Disconnect (for Control Mode with PG)
No PG pulses are received for longer than the time set to F1-14.
Reconnect the cable.
Correct the wiring.
Check the power line to the PG encoder.
Ensure the motor brake releases properly.
PG Hardware Fault (detected when using a PG-X3 option card)
PG cable is not connected properly.
Reconnect the cable.
Too Many Speed Search Restarts
The number of Speed Search restarts exceeded the number set to b3-19.
• Reduce the detection compensation gain during Speed Search (b3-10).
• Increase the current level when attempting Speed Search (b3-17).
• Increase the detection time during Speed Search (b3-18).
• Repeat Auto-Tuning.
Commercial Synchronous Switching Error
An error was detected during commercial synchronous switching. (The synchronous switching
signal is ON)
• Check the main circuit wiring and input voltage detection circuit on the drive side.
• Connect the drive-side main circuit wiring correctly (positive phase).
Match the phase connected to the motor with a commercial power phase, with the drive input
and output phases.
• Replace the input voltage detection circuit.
• Check that the switching command and switching answers are operating correctly.
• Review the command sequence to the switches.
Check the power state and load state if voltage synchronization is not achieved.
• Switch in a state with a small power fluctuation.
• Revise the run state to that the load fluctuation is reduced.
• Perform adjustment of the synchronization in the setting parameters (n7-
• Check that the switching command and switching answers are operating correctly.
• Review the command sequence to the switches.
Transformer Temperature Fault
The temperature of the transformer has exceeded the protection level set to L8-87.
If the cooling airflow is inadequate, replace the cooling fan.
Clean the intake filter.
Check the parameter settings.
If the problem occurs even at a low temperature, for example immediately after switching on the
power, contact Yaskawa or your nearest sales representative.
Transformer Temperature Fault 1
The temperature of the transformer has exceeded the temperature fault level.
If the cooling airflow is inadequate, replace the cooling fan.
Clean the intake filter.
Check the parameter settings.
If the problem occurs at a low temperature, for example immediately after applying power,
contact Yaskawa or your nearest sales representative.
Fault Name
Possible Solutions
Fault Name
Possible Solutions
Fault Name
Possible Solutions
Fault Name
Possible Solutions
Fault Name
Possible Solutions
Fault Name
Possible Solutions
5.4 Fault Detection
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