Lenze 8400 - Manual (Page 71)

Technical data
Overcurrent operation
4

71 EDS84ASC552 EN 9.1
4.4 Overcurrent operation
The controllers can be driven at higher amperages beyond the rated current if the duration
of this overcurrent operation is time limited. Two utilisation cycles with a duration of 15
s and 180 s are defined. Within these utilisation cycles, an overcurrent is possible for a
certain time if afterwards an accordingly long recovery phase takes place. For both
utilisation cycles, a moving average is determined separately.
Monitoring of the device utilisation (I x t) activates the set error response (trip or warning
if one of the two utilisation values exceeds the limit of 100 %. The current device utilisation
(I x t) is displayed under parameter C00064/x:
ƒ C00064/1: Total value of the device utilisation
ƒ
C00064/2: Pulse utilisation in 15-s cycle
ƒ C00064/3: Permanent utilisation in 180-s cycle
Type of utilisation Utilisation cycle
Monitoring function
Condition Code
Pulse utilisation 15 s I
aNx
> 160 %  Display in C00064/2

Display of the maximum
value in C00064/1
Permanent utilisation 180 s The monitoring function is
permanently active.

Display in C00064/3
 Display of the maximum
value in C00064/1