114 ADV200 • Functions description and parameters list
When the motor speed is equal to (PAR 2004 Ratedspeed / 2) the direct current of the MOTOR OVERLOAD func-
tion is equal to PAR 2002 Ratedcurrent * PAR 3206 Motorservicefactor, , whereas below that limit it is modied
following a linear pattern until PAR 2002 Ratedcurrent * 3206 Motorservicefactor * PAR 3218 Motorderatfac-
tor when the motor speed reaches zero.
The overload current of the MOTOR OVERLOAD function is obtained by PAR 2002 Ratedcurrent * 3206 Motor
servicefactor * PAR 3202 Motorovldfactor and is the maximum current that can circulate in the motor. If the
MOTOR OVERLOAD function is enabled the drive automatically sets the torque current limit so that Iout max. does
not exceed this value.
With the MOTOR OVERLOAD function a current equal to the Overload level is supplied to the motor for the maxi-
mum time set in PAR 3204 Motorovldtime, The slower the motor speed, the shorter the time allowed (see gure
at beginning of chapter).
After the set time, the MOTOR OVERLOAD function automatically sets the torque current limit so that Iout max.
does not exceed the direct current of the MOTOR OVERLOAD function.
When the motor current speed exceeds (PAR 2004 Ratedspeed / 2) and PAR 3216 Motorfantype = Auto fan,
the direct current is not reduced as cooling is sufcient.
When PAR 3216 Motorfantype = Servo fan, the direct current is not reduced as cooling is sufcient.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.5.6 3218Motorderatfactor perc FLOAT 50.0 0.0 100.0 ERWS F_S
This parameter is used to set the derating factor. The value is expressed as a percentage of PAR 2002 Rated
current * PAR 3206 Motorservicefactor.
When the current motor speed is below (PAR 2004 Ratedspeed / 2) and PAR 3216 Motorfantype = Auto fan,
the protection intervention time must be reduced as cooling is insufcient.
At below (PAR 2004 Ratedspeed / 2) sthe protection intervention time is reduced by reducing the direct cur-
rent of the MOTOR OVERLOAD function.
When the motor speed is equal to (PAR 2004 Ratedspeed / 2) ) the direct current of the MOTOR OVERLOAD
function is equal to PAR 2002 Ratedcurrent * PAR 3206 Motorservicefactor, whereas below that limit it is
modied following a linear pattern until PAR 2002 Ratedcurrent * PAR 3206 Motorservicefactor * PAR 3218
Motorderatfactor when the motor speed reaches zero.
The overload current of the MOTOR OVERLOAD function is obtained by PAR 2002 Ratedcurrent * PAR 3206
Motorservicefactor * PAR 3202 Motorovldfactor and is the maximum current that can circulate in the mo-
tor. If the MOTOR OVERLOAD function is enabled the drive automatically sets the torque current limit so that
Iout max. does not exceed this value.
With the MOTOR OVERLOAD function a current equal to the Overload level is supplied to the motor for the
maximum time set in PAR 3204 Motorovldtime, The slower the motor speed, the shorter the time allowed
(see graphs).
After the set time, the MOTOR OVERLOAD function automatically sets the torque current limit so that Iout max.
does not exceed the direct current of the MOTOR OVERLOAD function.
When the motor current speed exceeds (PAR 2004 Ratedspeed / 2) and PAR 3216 Motorfantype = Auto
fan, the direct current is not reduced as cooling is sufcient.
When PAR 3216 Motorfantype = Servo fan, the direct current is not reduced as cooling is sufcient.
If the value of parameter 3202 Motorovldfactoris 100 % the overload current of the Motor Overload func-
tion is equal to the continuous current of the Motor Overload function. In this case the drive behaves as if the
overload cycle has been executed and so sets the torque current limit so that Iout max is not more than the
continuous current, i.e. Ratedcurrent(PAR 2002) * Motorservicefactor(PAR 3206) * Motorderatfactor
(PAR 3218).
We recommend setting parameter 3218 Motorderatfactorto a value so that Ratedcurrent(PAR 2002) *
Motorservicefactor(PAR 3206) * Motorderatfactor(PAR 3218) produces a result that is more than the
motor magnetisation current.
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