Parameter ID Unit Default Min Max Description
Speed Derate Curve 1151 Submenus dene a curve for a quadratic load for
self cooling with the internal fan on the motor.
Use manufacturers data if available.
Set allowable motor load as a function of
speed to tailor the derating curve to the spe‐
cic motor manufacturers data for best pro‐
tection. See Table Speed Derate Curve Menu
(1151).
Maximum Motor
Inertia
1159 Kgm
2
0.0 0.0 500000.0 Set the motor inertia for calculating the mo‐
tor thermal capacity for the inverse time TOL
function. This does not include load inertia.
Entering zero allows the software to esti‐
mate the thermal capacity of the motor as
the default. Use manufacturers data if avail‐
able.
Refer to Appendix NEMA Table for the cor‐
rect value.
This parameter must be non-zero for proper
operation of the inverse time modes if the
motor parameters are outside the supported
range.
This parameter does not apply for Legacy in‐
verse time modes.
Motor trip volts 1160 V 4800 5 20000 Set the motor over-voltage trip point.
Overspeed 1170 % 120.0 0.0 290.0 Set the motor overspeed trip level as a per‐
centage of rated speed.
Underload enable 1180 Disable Enable or disable underload protection.
I underload 1182 % 10.0 1.0 90.0 Set the current underload level based on the
rated motor current.
Underload timeout 1186 sec 10.0 0.01 900.0 Set the time for underload trip. The time is
cumulative, increasing and decreasing to
measure total time less than the underload
limit. Once the timeout is reached, the drive
will trip. The drive alarms if the current falls
below the threshold, with a half second hys‐
teresis.
Motor torque lim‐
it 1
1190 % 100.0 0.0 300.0 Set the motoring torque limit as a function of
the rated motor current. Torque limit 1
(1190 and 1200) are used as default when
no other torque limits are selected via the
SOP. The magnitude of this torque limit is the
maximum eective magnitude for the re‐
maining torque limits (1200, 1210, 1220,
1230 and 1240).
Regen torque
limit 1
1200 % -0.25 -300.0 0.0 Set the regenerative torque limit as a func‐
tion of rated motor current at full speed. The
limit is allowed to increase inversely with
speed for a two quadrant drive.
Note: For drives with lm capacitors (i.e. wa‐
ter-cooled Type 6SR325), change the setting
to -0.15 %. These cells have less losses and
failure to make this change could result in an
over voltage trip during deceleration of the
drive.
Parameter Assignment/Addressing
6.3 Options for Motor Menu (1) - rst half
NXGPro+ Control Manual
Operating Manual, A5E50491925A 93
To Next Page
Loading...
