D
E
F
Figure 8.16 Replace the Front Covers and Digital Operator
Note:
Take proper precautions when wiring the option so that the front covers will easily fit back onto the drive. Make sure no cables
are pinched between the front covers and the drive when replacing the covers.
3.
Set drive parameters for proper motor rotation. (
Refer to A1: Initialization on page 492
Control Card Settings (PG-B3, PG-X3, PG-RT3, PG-F3) on page 522
for details on parameter settings) With a two-
pulse or three-pulse PG encoder, the leading pulse determines the motor rotation direction. When a Yaskawa induction
motor rotates forward (counter-clockwise when viewing rotation from motor load side), the PG signal will have a leading
A pulse, followed by a B pulse displaced at 90 degrees.
A pulse
B pulse
The A pulse leads, followed
by the B pulse displaced at 90 degrees
Time
→
Figure 8.17 Displacement of A and B Pulses
After connecting the PG encoder outputs to the option, apply power to the drive and manually rotate the motor and
check the rotation direction by viewing monitor U1-05 on the digital operator.
Reverse motor rotation is indicated by a negative value for U1-05; forward motor rotation is indicated by a positive
value.
If monitor U1-05 indicates that the forward direction is opposite of what is intended, set F1-05 or F1-32 to 1 or reverse
the two A pulse wires with the two B pulse wires on option terminal TB1 as shown in
A+
B+
A
−
B
−
Z+
SD FE
Z
−
A+
B+
A
−
B
−
Z+
SD FE
Z
−
Figure 8.18 A Channel and B Channel Wire Switching
Please note that when the drive is initialized using A1-03 =1110, 2220, 3330, the value for F1-05/F1-32 will reset to
factory default and the parameter will need to be readjusted to switch the direction. When F1-05/F1-32 are saved as
User Parameters (o2-03 = 1) and the User Parameter settings are initialized by setting A1-03 = 1110, the values for
F1-05/F1-32 will not be reset.
8.4 Option Installation
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
471
8
Peripheral Devices & Options
Summary of Contents for U1000 iQpump Drive
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