YASKAWA FSDrive-MV1000 Instructions Manual page 133

Cause
An external device has tripped an alarm
function.
Wiring is incorrect.
The sequence inputs are set incorrectly.
Digital Operator Display
FAn
Cause
Internal cooling fan has malfunctioned
Digital Operator Display
FbH
Cause
Parameters settings for b5-36 and b5-37 are
incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
Digital Operator Display
FbL
Cause
Parameters settings for b5-13 and b5-14 are
incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
Digital Operator Display
IOV
Cause
Excessive rise of the power supply voltage
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
Possible Solutions
⇒Remove the cause of the external fault and reset the sequence input
value.
Ensure the signal lines have been connected properly to the terminals
assigned for external fault detection (H1-
⇒Reconnect the signal line.
Check if the unused terminals have been set for H1-
(External Fault).
⇒Change the terminal settings.
Fan Fault
Fan or magnetic contactor failed.
Possible Solutions
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.
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.
Possible Solutions
⇒Check parameters b5-36 and b5-37.
⇒Correct the wiring.
⇒Check the sensor and replace it if damaged.
⇒Replace the board. For instructions on replacing it, contact Yaskawa
or your nearest sales representative.
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).
Possible Solutions
⇒Check parameters b5-13 and b5-14.
⇒Correct the wiring.
⇒Check the sensor and replace it if damaged.
⇒Replace the board. For instructions on replacing it, contact Yaskawa
or your nearest sales representative.
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.
Possible Solution
⇒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.
= 2C to 2F).
= 2C to 2F
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
5.5 Alarm Detection
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
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