Revision May, 2018     5-1 
Chapter 5 Trial Operation and 
Tuning 
This chapter is divided into two parts to describe the trial operation. The first one is the 
inspection without load and another one is the inspection with load. For safety reasons, 
please conduct the first inspection. 
5.1  Inspection without Load 
Please remove the load of the servo motor, including coupling on the shaft and 
accessories so as to avoid any damage on servo drive or mechanism. This is aiming to 
avoid the falling off of the disassembled parts of the motor shaft and indirectly causing the 
personnel injury or equipment damage during operation. Running the motor without load, if 
the servo motor can run during normal operation, then it can connect to load for operation. 
Caution: Please operate the servo motor without load first. If the servo motor runs 
normally, connect the load afterwards in order to avoid any danger. 
Please check the following items before operation. 
Inspection before 
operation 
(has not applied to 
the power yet) 
  Check if there is any obvious damage shown on its appearance. 
  The splicing parts of the wiring terminal should be isolated. 
  Make sure the wiring is correct so as to avoid the damage or 
any abnormity. 
  Check if the electric conductivity objects including sheet metal 
(such as screws) or inflammable objects are not inside the 
servo drive. 
  Check if the control switch is in OFF status. 
  Do not place the servo drive or external regenerative resistor on 
inflammable objects. 
  To avoid the electromagnetic brake losing efficacy, please 
check if stop function and circuit break function can work 
normally. 
  If the peripheral devices are interfered by the electronic 
instruments, please reduce electromagnetic interference with 
devices. 
  Please make sure the external voltage level of the servo drive is 
correct.