YASKAWA FSDrive-MV1000 - Page 133

5.5 Alarm Detection
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions 133
Troubleshooting
5
Cause Possible Solutions
Minor Fault
Output
H2-=10
An external device has tripped an alarm
function.
⇒Remove the cause of the external fault and reset the sequence input
value.
Yes
Wiring is incorrect.
Ensure the signal lines have been connected properly to the terminals
assigned for external fault detection (H1- = 2C to 2F).
⇒Reconnect the signal line.
The sequence inputs are set incorrectly.
Check if the unused terminals have been set for H1- = 2C to 2F
(External Fault).
⇒Change the terminal settings.
Digital Operator Display Minor Fault Name
FAn
Fan Fault
Fan or magnetic contactor failed.
Cause Possible Solutions
Minor Fault
Output
H2-=10
Internal cooling fan has malfunctioned
Cycle control power to the drive and see if the fault is still present.
Check if the fan is operating or not.
If the cooling fan has passed its expected performance life or is
damaged in some way, follow the instructions in this manual to
replace it.
Yes
Digital Operator Display Minor Fault Name
FbH
Excessive PID Feedback
The PID feedback input is higher than the level set in b5-36 for longer than the time set in
b5-37, and b5-12 is set to 1 or 4.
Cause Possible Solutions
Minor Fault
Output
H2-=10
Parameters settings for b5-36 and b5-37 are
incorrect.
⇒Check parameters b5-36 and b5-37.
Yes
PID feedback wiring is faulty. ⇒Correct the wiring.
Feedback sensor has malfunctioned. ⇒Check the sensor and replace it if damaged.
Feedback input circuit is damaged.
⇒Replace the board. For instructions on replacing it, contact Yaskawa
or your nearest sales representative.
Digital Operator Display Minor Fault Name
FbL
PID Feedback Loss
The PID feedback input was lower than the level set in b5-13 (PID Feedback Loss
Detection Level) for longer than the time set in b5-14 (PID Feedback Loss Detection
Time).
Cause Possible Solutions
Minor Fault
Output
H2-=10
Parameters settings for b5-13 and b5-14 are
incorrect.
⇒Check parameters b5-13 and b5-14.
Yes
PID feedback wiring is faulty. ⇒Correct the wiring.
Feedback sensor has malfunctioned. ⇒Check the sensor and replace it if damaged.
Feedback input circuit is damaged.
⇒Replace the board. For instructions on replacing it, contact Yaskawa
or your nearest sales representative.
Digital Operator Display Minor Fault Name
IOV
Input Overvoltage
The main circuit's power supply voltage has exceeded the setting in L2-41 in longer than
the time set to L2-42.
Cause Possible Solution
Minor Fault
Output
H2-=10
Excessive rise of the power supply voltage
⇒Check if an appropriate power supply is used.
⇒Take measures to adjust the power supply voltage of the main
circuit (for example, changing the taps of the transformer).
⇒ Change the setting (L2-41) to appropriate value.
⇒If detection is faulty, replace the isolation board, which detects the
power supply voltage of the main circuit, or the control board.
Yes