Speed Control Speed Mode Speed Regulation 2-143
To accomplish this, the PLC or other controller, will control the speed
command being sent to the drives. Both drives can be programmed for
droop operation. Or the lead drive may be used as the “speed regulator”
with the second drive used as a “torque helper” to share the load. The speed
regulator will be used to shed the load of an individual motor as the system
cycles through the process.When a car is finished and removed from the
line, the load on drive #1 will decrease. At this time, another vehicle is
added to the conveyor causing drive #2 to see an increase in load. Drive/
motor #2 will decrease its output frequency causing more of the load to be
taken by drive/motor #1.
TAKE UP
PowerFlex
Drive
#1
PowerFlex
Drive
#2
Gear
Box
Gear
Box
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