YASKAWA SGDV SERVOPACK, User Manual

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4 Trial Operation
4.3.4 Trial Operation in Position Control
4-8
4.3.4
Trial Operation in Position Control
Perform the following steps for trial operation in position control. The steps are specified on the condition that
input signal wiring for the position control has been completed according to
4.3.1 Inspecting Connection and Sta-
tus of Input Signals.
Step Operation Reference
1
Recheck the power supply and the input signal circuits, and turn ON the SERVO-
PACK control power supply.
3.2.4 Example of I/O Sig-
nal Connections in Posi-
tion Control
2
Set the reference pulse form with Pn200.0 according to the output pulse form of the
host pulse reference form. 5.4.1 Basic Settings for
Position Control
3
Set the reference unit, and then set the electronic gear ratio according to the host con-
troller. The electronic gear ratio is set in Pn20E and Pn210.
5.4.4 Electronic Gear
4
Turn ON the main circuit power supply of the SERVOPACK.

5 Turn ON the servo ON (/S-ON) input signal.

6
Output a low-speed pulse reference for an easy-to-check number of movements from
the host controller.

7
Check the number of reference pulses input to the SERVOPACK from the changes in
the input reference pulse monitor before and after the reference.
The input reference pulse can be checked with Un00C.

8
Check the actual number of motor movements from the changes in the feedback
pulse monitor before and after the reference.
The feedback pulse can be checked with Un00D.

9
Check that step 7 and step 8 satisfy the following formula.
Un00D = Un00C

(Pn20E/Pn210)

10
Check that the servomotor is moving in the direction specified by the reference.
Note: To switch the motor movement direction without changing the polarity of the
input pulse, refer to 5.2.3 Servomotor Movement Direction.
5.2.3 Servomotor Move-
ment Direction
11
Input a pulse reference for a comparatively large number of motor movements from
the host controller so that the servomotor will move at a constant speed.

12
Check the reference pulse speed input to the SERVOPACK from the input reference pulse speed monitor (mm/s).
The input reference pulse speed can be checked with Un007.
Note: Obtain Un007 from the following formula
.

13
Check the motor moving speed (mm/s). The motor moving speed can be checked
with Un000.

14
Check that the values in step 12 and step 13 (Un007 and Un000) are equal to each
other.

15
Stop the pulse reference and turn OFF the servo ON signal (/S-ON).

Note: To ensure safety, set the reference pulse speed so that the motor speed will be
around 100 mm/s.
Un007 input reference pulse speed
㨇
pulses/s
㨉
Pn210
Pn20E
1000
1 Scale pitch [ μ m]
Number of divisions
× ×
Electronic
gear ratio Linear scale resolution
47