Rockwell Automation GV3000/SE AC Gen. Purpose and Vector Drive Software Start-Up and Ref. Manual - Manual (Page 150)

4-64 GV3000/SE AC Drive Software Reference, Version 6.06
H.017 Input Power/Snubber Configuration (continued)
Line Dip Ride-Through
Line dip ride-through allows the drive to remain active during low line voltage or line
voltage loss for the time period specified in P.042 (Line Dip Ride-Through Time).
To enable line dip ride-through, set H.017 = 0, 1, 4, or 5. If the DC bus drops below the
low DC bus voltage threshold, or the AC line voltage drops out, the drive will reduce
the commanded frequency and regenerate to hold up the bus. Note that the drive will
decelerate at a rate required to hold up the bus, and may not use the value specified in
P.002 (Decel Time 1).
To disable line dip ride-through, set H.017 = 2 or 3. If the bus voltage drops below the
low DC bus voltage threshold or the AC line drops out, a low bus voltage fault (LU) will
be generated, and the drive will stop.
Refer to P.042 for more information regarding line dip ride-through.
Set H.018 = 0 for constant torque applications (such as extruders and conveyors).
Set H.018 = 1 for use with Reliance Electric RPM and XE AC motors. A special V/Hz
curve (with two different slopes) will provide wider constant torque capability and best
efficiency.
Set H.018 = 2 for centrifugal fan and pump motor applications.
Refer to figure 4.13.
H.018 Volts/Hertz Curve Type
This parameter
provides an
application-
dependent selection
of nominal motor
voltage versus
frequency. This
selection is effective
from any control
source.
Parameter Range: 0 = Linear V/Hz curve
1 = Optimized V/Hz curve
2 = Squared V/Hz curve
Default Setting: 0
Parameter Type: Configurable
Refer also to parameters: H.003 Torque Boost Voltage