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Revision March 2008, Doc. Name: 2007PDD23000011 

 

 

5-1

 

This chapter, which is divided into two parts, describes trial run for servo drive and motor. One part is to 

introduce the trial run without load, and the other part is to introduce trial run with load. Ensure to complete 

the trial run without load first before performing the trial run with load. 

In order to prevent accidents and avoid damaging the servo drive and mechanical system, the trial run 

should be performed under no load condition (no load connected, including disconnecting all couplings and 

belts). Do not run servo motor while it is connected to load or mechanical system because the unassembled 

parts on motor shaft may easily disassemble during running and it may damage mechanical system or even 

result in personnel injury. After removing the load or mechanical system from the servo motor, if the servo 

motor can runs normally following up the normal operation procedure (when trial run without load is 

completed), then the users can connect to the load and mechanical system to run the servo motor. 
 

 

¾

  In order to prevent accidents, the initial trial run for servo motor should be conducted under no load conditions 

¾

  Caution: Please perform trial run without load first and then perform trial run with load connected. After the 

After power in connected to AC servo drive, the charge LED will light and it indicates that AC servo drive is 

ready. Please check the followings before trial run: 

Item 

Content 

Inspection before 

operation 

(Control power is not 

applied) 

z

  Inspect the servo drive and servo motor to insure they were not damaged. 

z

  To avoid an electric shock, be sure to connect the ground terminal of servo drive to 

the ground terminal of control panel.  

z

  Before making any connection, wait 10 minutes for capacitors to discharge after 

the power is disconnected, alternatively, use an appropriate discharge device to 
discharge. 

z

  Ensure that all wiring terminals are correctly insulated. 

z

  Ensure that all wiring is correct or damage and or malfunction may result. 

z

  Visually check to ensure that there are not any unused screws, metal strips, or any 

conductive or inflammable materials inside the drive. 

z

  Never put inflammable objects on servo drive or close to the external regenerative 

resistor. 

z

  Make sure control switch is OFF. 

z

  If the electromagnetic brake is being used, ensure that it is correctly wired. 

z

  If required, use an appropriate electrical filter to eliminate noise to the servo drive.

z

  Ensure that the external applied voltage to the drive is correct and matched to the 

controller.