Speed Control Mode Adjustment Procedure - YASKAWA VS-626M5 Instruction Manual

Trial Operation

6.5 Speed Control Mode Adjustment Procedure

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
reference analog
After acceleration is completed,
check the motor speed using U1-01.
6
motor speed
agree with the ref-
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
Is speed
or digital?
Analog
Does
NO
erence?
YES
Higher than reference?
YES
Adjust C1-12 (S
ADJ
smaller than current value.
Adjust C1-12 (S
ADJ
smaller than current value.
(1)
Initial Settings
S Check the settings according to the factory settings table.
RUN Operation (0 V Common)
Check input signal.
S Input signal status (U1-09)
Motor speed adjustment value (C1-12)
NO
) to
) to
Example: When reference speed = 6,000 min
−1
6,060 min ., C1-12 = 6,000/6,060 = 0.99
6 -16
Details
7
EMG
6
RDY
Stop
8
FWD
RUN
24
0VCOM
19
EXTCOM
22
24VCOM
3
SCOM
4
0 V
10 V / 100%
RDY, EMG, and FWD are lit.
(P.U.)
1.1
1.0
0.9
0
1.1 (C1−12)
0.9
1.0
C1-12 = Reference speed/Actual motor speed
−1
and actual speed =
(Continued on next page.)