Run/Stop
Time
DC Brake Time
DC Brak Time
during Stopping
Minimum
output
frequency
Start-point for
DC brake
time during
stopping
DC Brake at Start-up is used for loads that may move before the AC drive starts, such as fans
and pumps. Under such circumstances, DC Brake can be used to hold the load in position
before setting it in motion.
DC Brake at stop is used to shorten the stopping time and also to hold a stopped load in position,
such as crane or cutting machine.
Voltage Increasing Gain
Factory Setting: 100
Settings 1~200%
When the user is using speed tracking, adjust Pr07-05 to slow down the increasing of voltage if
there are errors such as oL or oc.
Restart after Momentary Power Loss
Factory Setting: 0
Settings 0: Stop operation
1: Speed search for last frequency command
2: Speed search for the minimum output frequency
This parameter determines the operation mode when the AC motor drive restarts from a
momentary power loss.
The power connected to the drive may power off momentarily due to many reasons. This
function allows the drive to keep outputting after power is on again after power off and won’t
cause drive stops.
Setting 1: Operation continues after momentary power loss, speed search starts with the Master
Frequency reference value after drive output frequency and motor rotator speed is synchronous.
The motor has the characteristics of big inertia and small obstruction. For example, in the
equipment with big inertia wheel, it doesn’t need to wait to execute operation command until
wheel is complete stop after re-start to save time.
Setting 2: Operation continues after momentary power loss, speed search starts with the
minimum output frequency after drive output frequency and motor rotator speed is synchronous.
The motor has the characteristics of small inertia and bigger obstruction.
Maximum Power Loss Duration
Factory Setting: 2.0
Settings 0.1~20.0 sec
If the duration of a power loss is less than this parameter setting, the AC motor drive will resume
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