4-8
C. Position control mode trial run (Cn001=2).
1. Wiring:
Check and ensure that all power connections to the drive and motor and control signal connections are correct as
diagram below.
2. Setting electronic gear ratio.
Set electronic gear ratio parameters Pn302~Pn306 as required for the positioning application.
(refer to section 5-4-3).
Note: Electronic gear ratio parameter can be used to scale the command output pulse.
This would be useful in transmission applications where move distance per move command pulse
has to be scaled due to mechanical requirements.
3. Apply Servo on.
Apply power to the drive and activate (SON) signal by switching SON terminal to IG24 (input digital Ground).
4. Confirm motor speed, direction and number of revolutions.
Apply a low-speed pulse command from the host controller to the servo drive so that the servo motor
operates at low-speed.
Compare the number of pulses per revolution from parameters Un-15 ( motor feed back pulse ppr)
and Un-17 (Input command ppr) these should be the same.
Compare the number of revolutions using parameters Un-14 ( motor feed back rotation number) and
Un-16 (pulse command rotation number) these should be the same.
If there are differences then adjust electronic gear ratio parameters Pn302~Pn306 as required and test
again until the result is satisfactory.
If the direction of motor rotation is incorrect then check and if necessary set parameter Pn 301.0
(position pulse command types).
Also check and if necessary set parameter Pn314 (Position command direction selection).
Once the test result is correct then remove SON signal. (Power to the motor is switched off).
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