ABB ACS880 N5700 Series - Page 350

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
256 s / uint16Defines the thermal time constant for use with the
motor thermal protection model, defined as the time
to reach 63% of the nominal motor temperature. See
the motor manufacturer's recommendations.
Motor current
Temperature rise
Time
Time
100%
100%
63%
Motor thermal time
Motor thermal time
constant
35.55
1 = 1 s / 1 = 1 sMotor thermal time constant.100...10000 s
No action / uint16Selects the action taken when motor overload is
detected.
See section Motor overload protection (page 115).
Motor overload
action
35.56
0No action taken.No action
1Drive generates warning A783 Motor overload when
the motor is overloaded to the warning level, that is,
parameter 35.5 Motor overload level reaches value
88.0%.
Warning only
2Drive generates warning A783 Motor overload when
the motor is overloaded to the warning level, that is,
parameter 35.5 Motor overload level reaches value
88.0%.
Drive trips on fault 7122 Motor overload when the motor
is overloaded to the fault level, that is, parameter 35.5
Motor overload level reaches value 100.0%.
Warning and fault
Class 20 / uint16Defines the motor overload class to be used. The class
of protection is specified by the user as the time for
tripping at 7.2 times (IEC 60947-4-1) or 6 times (NEMA
ICS) the tripping level current.
See section Motor overload protection (page 115).
Motor overload class35.57
0Motor overload class 5.Class 5
1Motor overload class 10.Class 10
2Motor overload class 20.Class 20
350 Parameters