4-197
(4). Set PG pulse (20-27).
. Set PG of pulse number of the encoder
. The pulse number of phase A or phase B for each cycle is set by parameter
20-27.
. If there is reduction gear between the motor and PG, the gear ratio will be set by
20-30 and 20-31.
(5). PG rotation direction (20-28).
. This parameter is used to set the motor direction and PG direction.
. For the motor forward operation, set that phase A or phase B is leading.
20-28=0: for forward operation, phase A is leading (namely phase B is leading for
reversal operation).
20-28=1: for forward operation, phase A is leading (namely phase A is leading for
reversal operation).
Figure 4.3.118 PG and motor roation direction signal
Motor direction is determined as below:
─Forward: The motor operation is used for the inverter with special
(counter-clockwise) direction to perform forward command. Refer to
the below figure 4.3.119.
Figure 4.3.119 Motor operation direction
─Reversal: The motor operation is used for the inverter with clockwise direction
to perform the command. Refer to the below figure 4.3.120 for typical
PG signal.
Figure 4.3.120 PG operation direction
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