5.4.3.4 Power Braking
Power Braking is applied during deceleration when the inverter’s DC voltage rises above a
specified level due to motor regenerated energy. The inverter determines the optimum
deceleration rate and will either adjust the deceleration rate or will reaccelerate the motor in order to
reduce the regenerated energy. Power braking can be used when short deceleration times are
needed without brake resistors, or when optimum deceleration is needed without causing an over
voltage fault.
5.4.4 ADV-09 Forward or Reverse Run Prevention
The rotation direction can be configured to prevent motors from rotating in a specific direction. Setting
ADV-09 to ‘1 Reverse Prev’ will prevent reverse rotation regardless of DRV-02 ‘Keypad Run Direction’
setting or a digital input (Rx) command.
Forward/Reverse Run Prevention Setting Details
Choose a direction to prevent.
Set forward run prevention.
Set reverse run prevention.
•
To prevent overheating or damaging the motor, do not apply power braking to the loads that
require frequent deceleration.
•
Stall prevention and power braking only operate during deceleration.
•
Power Braking takes priority over stall prevention. In other words, when both bit 3 of PRT-50
(stall prevention and flux braking) and ADV-08 (braking options) are set, Power Braking will
take precedence and operate.
•
Note that if deceleration time is too short or inertia of the load is too great, an overvoltage fault
may still occur.
•
Note when Power Braking is used, the actual deceleration time can be longer than the pre- set
deceleration time.
To Next Page
Loading...
