300 YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
6.3 Drive Alarms, Faults, and Errors
6.3 Drive Alarms, Faults, and Errors
◆ Types of Alarms, Faults, 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 87.
If problems occur that are not covered in this manual, contact the nearest Yaskawa representative with the following
information:
• Drive model
• Software version
• Date of purchase
• Description of the problem
Table 6. 8 contains descriptions of the various types of alarms, faults, and errors that may occur while operating the drive.
Table 6.8 Types of Alarms, Faults, and Errors
Type Drive Response
Faults
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 MA-MC will close, and MB-MC will open.
The drive will remain inoperable until that fault has been cleared. Refer to Fault Reset Methods on page 335.
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 multi-function contact outputs closes if set to be tripped by a minor fault (H2- = 10), but not by an alarm.
• The digital operator displays text indicating a specific alarm and ALM indicator LED flashes.
To reset the a minor fault or alarm, remove whatever is causing the problem.
Operation Errors
When parameter settings conflict with one another or do not match hardware settings (such as with an option card), it results in an operation error. When the
drive detects an operation error:
• The digital operator displays text that indicates the specific error.
• Multi-function contact outputs do not operate.
The drive will not operate the motor until the error has been reset. Correct the settings that caused the operation error to clear the error.
Tuning E r ro r s
Tuning errors occur while performing Auto-Tuning. When the drive detects a tuning error:
• The digital operator displays text indicating the specific error.
• Multi-function contact 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 optional digital operator or the USB Copy Unit to copy, read, or verify parameter settings.
• The digital operator displays text indicating the specific error.
• Multi-function contact outputs do not operate.
Pressing any key on the operator will clear the fault. Find out what is causing the problem (such as model incompatibility) and try again.
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