7. Recommended Operations for Customers and Troubleshooting 
 
7-1
7. Recommended Operations 
for Customers and 
Troubleshooting  
  7-1 Regular Maintenance and Check 
7-2 
Oil Contamination 
7-3 
Lint Issue 
7-4 
Corrosion Issue 
7-5 
Dust Issue 
7-6 Installation and Wiring/Connection Issue 
7-7 Multi-function Input/Output Terminal Application Issue 
 
TheHybrid servo drive itself has warning messages and protection functions such as over-voltage, 
low-voltage, over-current, etc. Once a fault occurs, the protection function is activated, theHybrid servo 
drive stops output, and the motor comes to stop freely. Please look up the cause for the fault and perform 
the countermeasure according to the error message of theHybrid servo drive. The error records are stored 
in the internal memory of theHybrid servo drive (last six error messages can be recorded) and can be read 
out through the digital keypad or through the communication port. 
 
TheHybrid servo drive consists of a large number of parts including ICs, resistors, capacitors, transistors, 
other electronic components, cooling fans, and relays, etc. 
  These parts are not permanent and will 
eventually need replacing. Even in a normal environment, the components are prone to failure after the 
lifespan is reached. Therefore, preventive and regular inspection should be carried out so as to find out the 
part that does not meet the specifications or has poor quality so as to exclude the causes that may cause 
the failure of theHybrid servo drives. In addition, the inspection also helps the user to replace various parts 
that have reached their lifespan in order to ensure normal and safe operation. 
 
It is necessary to visually inspect the operation of theHybrid servo drives routinely to make sure that no 
abnormal condition occurs. Meanwhile, check if the following conditions occur:
 
 
;  After a fault occurs, the RESET button will be effective only 5 seconds after the fault 
condition is released.   
;  ForHybrid servo drives of power rating   22kW, it is necessary to wait for 5 minutes ≦
(10 minutes for   30kW) after the power is shut down to confirm that the indicator ≧
light is off and the measured DC voltage across the terminals 
 and   is below 
DC 25V before opening the cover for inspection. 
;  Non-authorized personnel are not allowed to perform the maintenance work and 
component replacement operation, (Before operation, it is necessary to remove the 
metal objects such as watches and rings. Use insulated tools during the operation.)
;  It is absolutely forbidden to modify theHybrid servo drive. 
;  Make sure that the operational performance and surrounding environment meet the 
standards and there is no abnormal noise, vibration and odor.