Parker AC30P Handbuch Seite 390

D-128
Parameter Reference
Power Loss Ride Thru
Parameters::Motor Control::Power Loss Ride Thru
The block controls the behaviour of the drive during a power outage.
When enabled, the drive attempts to keep the dc link high by regeneratively recovering the kinetic energy in the motor load in the event of a main
power supply loss.
Parameter Name No.
Pwrl Enable 1645
Enable the Power Loss Ride Through feature.
1646
Pwrl Trip Threshold
Determines the dc link volts at which the Power Loss Ride Through sequence is triggered.
% of the max dc link voltage ( drive overvoltage level = 100% )
Pwrl Control Band 1647
Determines the band while the speed setpoint is ramped down.
% of the max dc link voltage ( drive overvoltage level = 100% )
Once the dclink falls down below Pwrl TripThreshold, the speed septoint is ramped to zero until the dc link rises above Pwrl trip
Threshold + Pwrl Control Band.
Then the speed septoint is hold, waiting either to continue ramping down if the dc link is still moving down or ramped back to the speed
septoint if the supply returns.
Pwrl Accel Rate 1648
Rate in Hz/s ( electrical frequency/ second) at which the speed septoint is ramped back to the speed demand
Path
Parameters::Motor Control::Power Loss
Ride Thru
Parameters::Motor Control::Power Loss
Ride Thru
Parameters::Motor Control::Power Loss
Ride Thru
Parameters::Motor Control::Power Loss
Ride Thru
Default Range
FALSE
52.0 20.0 to 60.0
2.0 0.0 to 20.0
100 1 to 500
Units Writable
STOPPED
% STOPPED
% STOPPED
Hz/s STOPPED
AC30 series Variable Speed Drive