5.3 Types of Faults, Alarms, and Errors
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions 113
5.3 Types of Faults, Alarms, and Errors
◆ Types of Faults, Alarms, and Errors
Check the digital operator for information about possible faults if the drive or motor fails to operate. Refer to Using the
Digital Operator on page 79.
When troubles still remain after consulting this section, confirm the following items in advance and contact your
Yaskawa representative or the nearest Yaskawa sales office.
•Drive model
• Software version
• The serial number stated on the nameplate (SER NO.)
• Date of purchase
• Description of the problem
Table 5.5 describes alarms, faults and errors that may occur during operation of the drive.
Table 5.5 Types of Alarms, Faults, and Errors
Type Drive Response
Drive Faults
Drive faults are detected by the control panel. Power Cell faults are detected by the Power Cell control
circuit and transmitted to the control panel.
When the drive detects a fault:
• The digital operator displays text that indicates the specific fault and the ALM indicator LED remains lit
until the fault is reset.
• The fault interrupts drive output and the motor coasts to a stop.
• Some faults allow the user to select how the drive should stop when the fault occurs.
• Fault output terminals 30-31 will close, and 32-33 will open.
The drive will remain inoperable until that fault has been cleared. Refer to Fault Reset Methods on
page 151 for the reset operations.
Power Cell Faults
Minor Faults and Alarms
When the drive detects an alarm or a minor fault:
• The digital operator displays text that indicates the specific alarm or minor fault, and the ALM indicator
LED flashes.
• The drive generally continues running the motor, although some alarms allow the user to select a
stopping method when the alarm occurs.
• One of the sequence outputs closes if set to be tripped by a minor fault (H2- = 10), but not by an
alarm.
To reset the a minor fault or alarm, remove whatever is causing the problem.
Operator Programming
Error
When parameter settings conflict with one another or an option card is not properly connected, it results in
an operator programming error. When the drive detects an operator programming error, the status
described below comes into effect.
• The digital operator displays text that indicates the specific error, and the ALM indicator LED flashes.
• Sequence outputs do not operate.
The drive will not operate the motor until the error has been reset. Correct the settings that caused the
Operator Programming Error to clear the error.
Auto-Tuning Errors
Tuning errors occur while performing Auto-Tuning. When the drive detects a tuning error:
• The digital operator displays text that indicates the specific error, and the ALM indicator LED flashes.
• Sequence outputs do not operate.
• Motor coasts to stop.
Remove the cause of the error and repeat the Auto-Tuning process.
Copy Function Errors
These are the types of errors that can occur when using the digital operator or the USB Copy Unit to copy,
read, or verify parameter settings.
• The digital operator displays text that indicates the specific error, and the ALM indicator LED flashes.
• Sequence outputs do not operate.
Pressing any key on the digital operator will clear the fault. Find out what is causing the problem (such as
model incompatibility) and try again.
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