YASKAWA SGM series User Manual page 52

BASIC USES OF Σ-SERIES PRODUCTS
2.4.2 Step 1: Conducting a Test Run for Motor without Load cont.
2
40
(4) Turn the power ON.
Turn the Servopack power ON. If the Servo-
pack is turned ON normally, the LED on the
Digital Operator lights up as shown in the fig-
ure.
Power is not supplied to the servomotor be-
cause the servo is OFF.
If an alarm display appears on the LED as
shown in the figure above, the power supply
circuit, motor wiring or encoder wiring is incor-
rect. In this case, turn the power OFF, then cor-
rect the problem.
Note: When absolute encoder is used, perform
the following procedures after turning ON
the power.
Set the bit E of Cn−01 to 1.
1
Set the number of encoder pulses (Cn−11)
2
to 1024.
Set the dividing ratio of encoder pulses
3
(Cn−0A) to 1024 or below.
Turn OFF the power once. Then turn ON
4
the power again after checking if the displays
of digital operator extinguish.
(5) Operate using the Digital Operator
Operate the motor with the Digital Operator.
Check that the motor runs normally.
Refer to 4.2.2 Operating Using the Digital Op-
erator.
Normal display
Alternately displayed
Example of alarm display
Refer to Appen-
dix E List of
Alarm Displays.
Operation by Digital Operator
If an alarm occurs, the power supply
circuit, motor wiring, or encoder
wiring is incorrect.