Parker AC30 - Braking

D-24 Parameter Reference
AC30 series Variable Speed Drive
Braking
Parameters::Motor Control::Braking
The braking function controls the rate at which energy from a regenerating motor is dumped into a resistive load. This dumping prevents the dc link
voltage reaching levels which would cause an Overvoltage trip.
Parameter Name
No.
Path
Default
Range
Units
Writable
Braking Enable
0249
Parameters::Motor Control::Braking
TRUE
ALWAYS
Enables operation of the dynamic braking feature.
Brake Resistance
0251
Parameters::Motor Control::Braking
100.00
0.01 to 1000.00
Ohm
STOPPED
The value of the dynamic braking load resistance.
Brake Rated Power
0252
Parameters::Motor Control::Braking
0.10
0.10 to 510.00
kW
STOPPED
The power that the load resistance may continually dissipate.
Brake Overrating
0253
Parameters::Motor Control::Braking
25.00
1.00 to 40.00
STOPPED
Multiplier that may be applied to Brake Power for power overloads lasting no more than 1 second.
Braking Active
0254
Parameters::Motor Control::Braking
NEVER
A read-only parameter indicating the state of the brake switch.
Functional Description
When enabled, the Braking feature monitors the internal dc link voltage every millisecond and sets the state of the brake switch accordingly. When
using braking, the brake resistor information must be entered it ordered for the resistor protection to operate.
The Braking feature operates even when the motor output is not enabled. This allows the function to continually monitor the energy dumped into the
braking resistor, and the energy dissipated across the brake switch. With this information the Drive is able to deduce the loading on the brake
resistor.