Lenze 8200 motec Instructions De Montage page 11

Adjustment
1. Calculate C0120. This value corresponds to a motor utilisation of 100 %:
C0120 [%]
2. If you decrease C0120 on the basis of the value calculated, the monitoring already
responds at a motor utilisation < 100 %.
3. If you increase C0120 on the basis of the value calculated, the monitoring only
responds at a motor utilisation > 100 %.
The controller switches off with error OC6 if the apparent motor current is greater than the
rated motor current for a longer time.
C0120 <
t [s]
360
300
240
180
120
60
0
0
f Output frequency
t Release time
I Rated controller current at switching frequency 8 kHz
N
I Rated motor current
r
C0054 Apparent motor current
Example:
`MNOM
C0054 = 1.5 x rated motor current
The controller switches off at output frequencies f > 40 Hz with error OC6 after
approx. 60 s.
EDK82MV752-BB DE/EN/FR 2.1
I Rated motor current
I
r
r
100 %
I
N
I Rated controller current at switching frequency 8 kHz
r
I x 100 %
r C0120 =
I
N
f = 0 Hz
0.5
f
ê
NMM B
f
k
I x 100 %
r
I
N
f = 20 Hz
f > 40 Hz
1.0

I x 100 %
C0120 > r
I
N
1.5 2.0
C0054
I
r
8200vec523
11