Yaskawa PG-E3 Motor Encoder Feedback - Manual (Page 18)

5 Installation Procedure
YASKAWA ELECTRIC TOBP C730600 52C 1000-Series Option PG-E3 Installation Manual 17
7.
Set drive parameters for proper motor rotation.
The leading pulse determines the motor rotation direction. A PG encoder signal with
leading A pulse is considered to be rotating forward (counter-clockwise when
viewing rotation from motor load side).
Figure 10
Figure 9 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 drive parameter F1-05 to 1 to switch the direction of how the option reads pulses
from the PG encoder output.
Please note that when the drive is initialized using A1-03 =1110, 2220, 3330, the
value for F1-05 will reset to factory default and the parameter will need to be
adjusted again to switch the direction.
A
B
The A pulse leads, followed
by the B pulse displaced at 90 degrees
Time →
Pulse
Pulse
E3