8.1 Trial Operation
8-11
(2) Operating Procedure in Speed Control Mode (Pn000 = n.0)
The following circuit is required: External input signal circuit or equivalent.
Step Description Check Method and Remarks
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.
Refer to the above figure for input signal circuit.
2 Turn ON the servo ON (/S-ON) input signal. 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.
3 Generally increase the speed reference input voltage
between V-REF and SG from 0 V.
The factory setting is 6 V/rated rotation speed.
4 Check the speed reference input to the SERVO-
PACK (Un000 [min
-1
]).
Refer to 7.1.3 Basic Mode Selection and Operation for
how it is displayed.
5
Check the Un000 (motor speed [min
-1
].
Refer to 7.1.3 Basic Mode Selection and Operation for
how it is displayed.
6 Check that the Un001 and Un000 values in steps 4
and 5 are equal.
Change the speed reference input voltage and check
that Un001 and Un000 values are equal for multiple
speed references.
7 Check the speed reference input gain and motor
rotation direction.
Refer to the following equation to change the Pn300
(speed reference input gain).
Un001=(voltage between V-REF) [V] × Pn300 [300
min
-1
/6 V]
To change the motor rotation direction without chang-
ing polarity for speed reference input voltage, 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 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.
−
47
CN1
+24V
/S-ON
P-OT
N-OT
V-REF
40
42
43
5
6
SERVOPACK
0V
+
V
E
V
E
: Max. voltage (12 V)
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