Parameter Reference D-71
AC30V series Variable Speed Drive
PMAC Flycatching
Parameters::Motor Control::PMAC Flycatching
This block performs a directional speed search. It allows the Drive to seamlessly catch a spinning motor before controlling the motor to the
desired setpoint. This is especially useful for large inertia fan loads, where drafts in building air ducts can cause a fan to `windmill’.
PNO Parameter Descriptions
0689 PMAC Flycatching Enable
Enable the flycatching for PMAC motor
0690 PMAC Fly Search Mode
The PMAC Flycatching sequence can be triggered by different starting conditions:
ALWAYS: All starts (after controlled or uncontrolled stop, or after a power-up)
TRIP or POWER-UP: After uncontrolled stop, i.e. trip or coast, or after a power-up
TRIP: After uncontrolled stop, i.e. trip or coast
0691 PMAC Fly Search Time
PMAC Fly Search Time to catch the right speed
0692 PMAC Fly Load Level
PMAC Fly Load Level during fly catching
0693 PMAC Fly Active
Diagnostic to show if the PMAC fly catching is active or inactive
0694 PMAC Fly Setpoint
PMAC Fly Setpoint
Functional Description
The flycatching function enables the drive to be restarted smoothly into a spinning motor.
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