YASKAWA FSDrive-MV1000 - Page 136

5.5 Alarm Detection
136 YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
Digital Operator Display Minor Fault Name
OOV
Output Overvoltage
The output voltage of the drive has exceeded the output overvoltage detection level in L8-
63 for longer than the time set to L8-64.
Cause Possible Solution
Minor Fault
Output
H2-=10
Excessive rise of the output voltage
⇒Change the motor parameters to appropriate values.
Parameters: E1-, E2-
⇒Change the settings of L8-63 and L8-64 to appropriate values.
⇒Check the cables on the output side for disconnection or incorrect
connection, and correct if necessary.
Yes
Digital Operator Display Minor Fault Name
oS
Overspeed (for Control Mode with PG)
The motor speed feedback exceeded the F1-08 setting.
Cause Possible Solutions
Minor Fault
Output
H2-=10
Overshoot is occurring.
⇒Set C5-01 (ASR Proportional Gain 1) and C5-02 (ASR Integral
Time 1) to bigger.
Yes
Inappropriate parameter settings.
⇒Check the setting for the overspeed detection level and the
overspeed detection time (F1-08 and F1-09).
Digital Operator Display Minor Fault Name
PASS
MEMOBUS/Modbus Comm. Test Mode Complete
Cause Possible Solutions
Minor Fault
Output
H2-=10
MEMOBUS/Modbus test has finished
normally.
No measures (not an alarm.)
This verifies that the test was successful.
No
Digital Operator Display Minor Fault Name
PGo
PG Disconnect (for Control Mode with PG)
Detected when no PG pulses are received for a time longer than setting in F1-14.
Cause Possible Solutions
Minor Fault
Output
H2-=10
PG cable is disconnected. ⇒Reconnect the cable.
Yes
PG cable wiring is wrong. ⇒Correct the wiring.
PG encoder does not have enough power.
⇒Make sure the correct power supply is properly connected to the PG
encoder.
Brake is holding the PG. ⇒Ensure the brake releases properly
Digital Operator Display Minor Fault Name
PGoH
PG Hardware Fault (detected when using a PG-X3 option card)
PG cable disconnection was detected.
Cause Possible Solutions
Minor Fault
Output
H2-=10
PG cable is disconnected. ⇒Reconnect the cable. Yes
Digital Operator Display Minor Fault Name
rUn
Motor Switch during Run
A command to switch motors was entered during run.
Cause Possible Solutions
Minor Fault
Output
H2-=10
A motor switch command was entered during
run.
Change the operation pattern so that the motor switch command is
entered while the drive is stopped.
Yes