User manual

14 Inspection
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14 Inspection
It is recommended that periodic inspections be conducted for the items listed below after each operation of
the motor.
If an abnormal condition is noted, discontinue any use and contact your nearest office.
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During inspection
• Are any of the motor mounting screws loose?
• Check for any unusual noises in the motor’s bearings (ball bearings) or other moving parts.
• Are the motor’s output shaft and load shaft out of alignment?
• Are there any scratches, signs of stress or loose driver connections in the motor cable?
• Check for a blocked opening of the driver case.
• Are any of the driver mounting screws or power connection terminal screws loose?
• Are there any strange smells or appearances in the power elements and filtering capacitors within the
driver?
Note
The driver uses semiconductor elements, so be extremely careful when handling them.
Static electricity may damage the driver.
15 Alarms and warnings
The driver provides alarms that are designed to protect the driver from overheating, poor connection,
misoperation, etc. (protective functions), as well as warnings that are output before the corresponding alarms
generate (warning functions).
15.1 Alarms
When an alarm generates, the ALM output will turn OFF and the motor will stop.
When the application parameter for alarm code output [APP-1-10] is set to “Enable,” the READY output,
TLC/VLC output and ZSG2/NEAR/ZV output will automatically switch to the AL0 output, AL1 output and
AL2 output, respectively. However, the current position output function is given priority when the P-REQ
input is ON in the position control mode. In this case, alarm codes are not output. Also, the ALM-RST input
cannot be used because the CLR/ALM-RST/P-CK input functions as the P-CK input.
When an alarm generates, the ALARM LED will blink. The cause of the alarm can be checked by counting
the number of times the ALARM LED blinks.
Present alarms can be checked using the data setter OPX-2A or the data setting software MEXE02.
You can also check the records of up to ten most recent alarms starting from the latest one, or clear the alarm
records.
Example: Overvoltage alarm (Number of blinks: 3)
Approx.
200 ms
Approx.
200 ms
Interval
Approx. 1.2 s
Note
Some alarms cause the motor current to be cut off, resulting in the motor losing its holding
torque. In the case of an electromagnetic brake motor, the electromagnetic brake will
actuate to hold the load in position.