ABB ACS560 Firmware Manual page 290

290 Parameters
No. Name/Value
35.55 Motor thermal time
const
100...10000 s
35.56 Motor overload
action
No action
Warning only
Warning and fault
35.57 Motor overload
class
Class 5
Class 10
Class 20
Description
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.
For thermal protection according to UL requirements for
NEMA class motors, use the rule of thumb: Motor thermal
time equals 35 times t6, where t6 (in seconds) is specified by
the motor manufacturer as the time that the motor can safely
operate at six time its rated current..
Motor current
100%
Temperature rise
100%
63%
Motor thermal time
Motor thermal time constant.
Selects how the drive reacts when the motor reaches
overload condition.
None.
The drive generates an
the motor is overloaded to the warning level, that is,
parameter 35.05 Motor overload level
The drive generates an
the motor is overloaded to the warning level, that is,
parameter 35.05 Motor overload level
Drive trips on fault 7122 Motor overload
overloaded to the fault level, that is, parameter
overload level reaches value 100.0%.
Selects 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
Class 5 relay trip class
Class 10 relay trip class
Class 20 relay trip class
A783 Motor overload warning when
reaches value 88.0%.
A783 Motor overload warning when
reaches value 88.0%.
when the motor is
35.05 Motor
on page 88.
Def/FbEq16
256 s
Time
Time
1 = 1 s
Warning and
fault
0
1
2
Class 20
0
1
2