Table 6-3 Limits Menu (1120) Parameters
Parameter ID Unit Default Min Max Description
Overload select
1130
2 for in‐
verse time
with speed
derating
Select the overload trip algorithm:
• Constant: xed current-based TOL
• Straight inverse time: motor tempera‐
ture-based TOL
• Inverse time with speed derating: motor
temperature-based TOL
• Legacy inverse time TOL (with or without
speed derating) for out-of-range motor
sizes.
Motor inertia must be accurate for the tem‐
perature model algorithm to work properly.
Note: Select "constant" and set the next two
parameters (1139 & 1140) to maximum to
disable this function.
Overload pending 1139 % 105.0 for
constant
and inverse
time set‐
tings
10.0 210.0 Set the thermal overload level at which a
rst level warning is issued:
• Constant mode: based on motor total
current as a percent of rating.
• Inverse mode: percentage of thermal ca‐
pacity based on the thermal model mo‐
tor heating.
This parameter is not used for legacy inverse
TOL options.
Overload 1140 % 110.0 for
constant
and inverse
time set‐
tings.
100.0 for
Legacy TOL
modes.
20.0 210.0 Set the motor thermal overload trip level and
an impending trip warning. Once this level is
reached, the timeout counter is started for
the overload fault.
• Constant mode: based on motor total
current as a percent of rating.
• Inverse mode: percentage of thermal ca‐
pacity based on the thermal model mo‐
tor heating.
• Legacy inverse time TOL (with or without
speed derating) for out-of-range motor
sizes. Must be set to 100% for proper op‐
eration.
Overload timeout 1150 sec 5.0 for in‐
verse time
modes.
60.0 for
constant
mode.
60.0 for
Legacy TOL
modes.
0.01 300.0 Set the time for the overload trip once the
overload trip level has been reached. Since
the inverse time algorithms estimate ther‐
mal heating of the motor, the overload time‐
out is minimal for trip.
Parameter Assignment/Addressing
6.3 Options for Motor Menu (1) - rst half
NXGPro+ Control Manual
92 Operating Manual, A5E50491925A
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