Rockwell Automation GV3000/SE AC Gen. Purpose and Vector Drive Software Start-Up and Ref. Manual - Manual (Page 149)

Programming Reference 4-63
.
For AC input Power Modules (200-230 V, 3-phase, 50/60 Hz or 380-460 V, 3-phase,
50/60 Hz), set H.017 = 0 or 1.
For DC input Power Modules, set H.017 = 2 or 3 if multiple motors are connected to
the inverter. Set H.017 = 4 or 5 if a single motor is connected to the inverter.
Snubber Resistor
If a snubber resistor is not used, set H.017 = 0, 2, or 4. If the DC bus voltage rises
above a certain threshold (14% above the rectified nominal AC line), the drive will
increase the commanded frequency in an effort to reduce bus voltage. The drive will
increase the commanded frequency a maximum of 10 Hz but will not exceed the value
specified in P.004 (Maximum Speed). The deceleration time (P.002) may be
automatically extended to prevent a high bus voltage fault from occurring. If the bus
voltage continues to rise, a high bus voltage fault (HU) will be generated.
If a snubber resistor is used, set H.017 = 1, 3, or 5. If the DC bus voltage rises above a
certain threshold (14% above the rectified nominal AC line), the drive will not attempt
to increase the commanded frequency, but will rely on the hardware snubber resistor
to decrease voltage. Note that you may need to extend the deceleration time specified
in P.002 (Decel Time) to prevent a high bus voltage fault (HU) from occurring.
H.017 Input Power/Snubber Configuration
This parameter is
used to identify the
input power supply
type/snubber
resistor/line dip
ride-through
configuration being
used.
Parameter Range: 0 = AC input, snubber resistor not used,
ride-through enabled
1 = AC input, snubber resistor used,
ride-through enabled
2 = DC input, snubber resistor not used,
ride-through disabled
3 = DC input, snubber resistor used,
ride-through disabled
4 = DC input, snubber resistor not used;
ride-through enabled
5 = DC input, snubber resistor used,
ride-through enabled
Default Setting:
0 *
Parameter Type: Configurable
Refer also to parameters: P.042 Line Dip Ride-Through Time
P.002 Decel Time 1
* For M/N 50R416x, 50T416x, 75R416x, 75T416x, and 125R416x (DC input), the default value = 4.
!
ATTENTION: When connected to a non-regenerative common DC bus,
regeneration may cause a rise in DC bus voltage. Be aware that other
drives on the bus may experience an unexpected speed increase due to
the high bus voltage. Failure to observe this precaution may result in
bodily injury.