4-285
20-28=0:
Forward operation, phase A is leading (phase B is leading for reversal operation).
20-28=1:
Forward operation, phase B is leading (phase A is leading for reversal operation).
Inverter
Motor
Forward
Command
CCW
(Forward)
phase
A
phase
B
phase
A
phase
B
{
{
(20-28= 0)
(20-28= 1)
Figure 4.4.118 PG and motor rotation direction
Motor direction is determined as below:
Forward: The motor direction is counter-clockwise when inverter runs in forward direction (see figure 4.4.119.)
Inverter
Motor
Forward
Command
CCW
(Forward)
Figure 4.4.119 Motor operation direction
Forward: The motor direction is clockwise when inverter runs in forward direction (see figure 4.4.120.)
Refer to the below figure 4.4.120 for PG feedback pulses.
phase A
phase B
PG
CW
Figure 4.4.120 PG operation direction
(6) PG pulse dividing ratio (20-29)
Sets the pulse divider ratio between the PG input and PG output.
The left most digit (3
rd
) represent the numerator and the last to represent the denominator.
Ratio is calculated as follows:
20-29=
□ □□, = n kk
Range n: 0 to 1
Range k: 1 to 32
Ratio = (1+n)/k