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Using PG Speed Control Board
There are four types of PG Speed Control Board that can be used in V/f control with PG.
3G3FV-PPGA2: A-phase (single) pulse input, compatible with open collector or complimentary outputs.
•
3G3FV-PPGB2: A/B-phase pulse input, compatible with complimentary outputs.
•
3G3FV-PPGD2: A-phase (single) pulse input, compatible with line drivers.
•
3G3FV-PPGX2: A/B/Z-phase pulse input, compatible with line drivers.
•
There are two types of PG Speed Control Boards that can be used for flux vector control.
3G3FV-PPGB2: A/B phase pulse inputs, complementary outputs
•
3G3FV-PPGX2: A/B/Z phase pulse inputs, line driver outputs
•
For the connection diagram, refer to page 2-38 to 2-37.
Setting Number of PG Pulses
Set the number of PG (Pulse Generator/Encoder) pulses in pulses/rotation. Set the number of A-phase or B-
phase pulses per 1 motor rotation in F1-01.
Matching PG Rotation Direction and Motor Rotation Direction
Parameter F1-05 matches the PG rotation direction and the motor rotation direction. If the motor is rotating
forwards, set whether it is A-phase driven or B-phase driven. Make this setting when using 3G3FV-PPGB2 or
3G3FV-PPGX2.
Inverter
Forward
Command
A-phase driven when set value = 0
A-phase
B-phase
Example: Forward rotation of standard Yaskawa motor (PG used: Samtack (KK))
Forward
Command
Yaskawa standard PG used is A-phase driven (CCW) when motor rotation is forward.
Generally, PG is A-phase driven when rotation is clockwise (CW) see from the input axis. Also, motor rota-
tion is counter-clockwise (CCW) seen from the output side when Forward Commands are output. Conse-
quently, when motor rotation is forward, PG is normally A-phase driven when a load is applied, and B-phase
driven when a load is not applied.
Motor
PG (encoder)
Pulse output
B-phase driven when set value = 1
A-phase
B-phase
Motor output axis rotates
counter-clockwise during In-
verter Forward Command.
A-phase
B-phase
Fig 6.94 PG Rotation Direction Setting
Rotation
(CCW)
Options
195
6-
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Troubleshooting
