ABB ACS880 N5700 Series, Firmware Manual, Page: 350 / 662

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
256 s / uint16 Defines 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 s Motor thermal time constant. 100...10000 s
No action / uint16 Selects the action taken when motor overload is
detected.
See section
Motor overload protection (page 115) .
Motor overload
action 35.56
0 No action taken. No action
1 Drive 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
2 Drive 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 / uint16 Defines 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 class 35.57
0 Motor overload class 5. Class 5
1 Motor overload class 10. Class 10
2 Motor overload class 20. Class 20
350 Parameters