YASKAWA VS-626M5, Instruction Manual, Page: 122 / 305

Trial Operation
6 -16
6.5 Speed Control Mode Adjustment Procedure
First check that the Motor is operating normally, and then adjust the speed control mode according to the adjust-
ment procedure shown below. Also, if replacing the Motor or Inverter, be sure to perform the adjustments
shown below.
Adjustment Item and Procedure Details
Adjust C1-12 (S
ADJ
) to
smaller than current value.
NO
NO
YES
YES
Turn ON the power supply.
Make initial settings.
Turn ON emergency stop (EMG)
and operation standby (RDY).
Enter the rated speed reference.
Trun ON forward rotation (PWD).
Digital
Analog
Is speed
reference analog
or digital?
After acceleration is completed,
check the motor speed using U1-01.
Does
motor speed
agree with the ref-
erence?
Higher than reference?
Adjust C1-12 (S
ADJ
) to
smaller than current value.
(1)
Initial Settings
S
Check the settings according to the factory settings table.
RUN Operation (0 V Common)
7
EMG
RDY
FWD
0VCOM
EXTCOM
24VCOM
6
8
24
19
22
3
4
SCOM
0 V
10 V / 100%
Stop
RUN
Check input signal.
S
Input signal status (U1-09)
Motor speed adjustment value (C1-12)
RDY, EMG, and FWD are lit.
(P.U.)
1.1
1.0
0.9
0
0.9 1.0 1.1 (C1
− 12)
Example: When reference speed = 6,000 min
− 1
and actual speed =
6,060 min
− 1
., C1-12 = 6,000/6,060 = 0.99
Speed
C1-12 = Reference speed/Actual motor speed
(Continued on next page.)
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