Lenze 4800 - Blocking Protection for the Motor

Configuration
7-103
48XX/49XXSHB0399
7.7.4 Blocking protection for the motor
Purpose
The blocking protection avoids that the collector of the DC motor is overheated in
standstill.
Function
4900Str086
I
n
T rip d E r
C 124
Blocking tim e
A
act
C 123
Blocking current
FIG 7-59 Blocking protection function
The blocking protection is activated if
( I
Aact
> threshold in C123
( n
act
<1%¼ n
rated
(C087) and
( the blocking time set (C124) are exceeded.
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