YASKAWA SGDH User Manual page 443

(2) Operating Procedure in Speed Control Mode (Pn000 = n.
The following circuit is required: External input signal circuit or equivalent.
+
V
E
V : Max. voltage (12 V)
E
Step
1 Check the power and input signal circuits again, and
check that the speed reference input (voltage
between the V-REF and SG) is 0 V.
2 Turn ON the servo ON (/S-ON) input signal.
3 Generally increase the speed reference input voltage
between V-REF and SG from 0 V.
4 Check the speed reference input to the SERVO-
PACK (Un000 [min-1]).
5 Check the Un000 (motor speed [min-1].
6 Check that the Un001 and Un000 values in steps 4
and 5 are equal.
7 Check the speed reference input gain and motor
rotation direction.
8 When the speed reference input is set to 0 V and
servo OFF status enters, the trial operation for ser-
vomotor without load is completed.
SERVOPACK
CN1
47
+24V
/S-ON
40
42
P-OT
N-OT 43
V-REF
0V
5
6
Description
8-11
0 )
Check Method and Remarks
Refer to the above figure for input signal circuit.
If the servomotor rotates at extremely slow speed,
refer to 8.5.3 Adjusting Offset, and use the reference
voltage offset to keep the servomotor from moving.
The factory setting is 6 V/rated rotation speed.
Refer to 7.1.3 Basic Mode Selection and Operation for
how it is displayed.
Refer to 7.1.3 Basic Mode Selection and Operation for
how it is displayed.
Change the speed reference input voltage and check
that Un001 and Un000 values are equal for multiple
speed references.
Refer to the following equation to change the Pn300
(speed reference input gain).
Un001=(voltage between V-REF) [V] × Pn300 [300
min-1/6V]
To change the motor rotation direction without chang-
ing polarity for speed reference input gain, refer to
8.3.2 Switching the Servomotor Rotation Direction.
Perform the operation from step 2 again after the
motor rotation direction is changed.
−
8.1 Trial Operation
8