Monitoring functions, Overcurrent characteristic, Again, the time 3 x – Lenze ECSCMxxx User Manual
Page 235: With the load i/i, 0 a must be observed, Overcurrent diagram for oc5 fault message
Monitoring functions
Configuring monitoring functions
Current load of controller (I x t monitoring: OC5, OC7)
l
235
EDBCSXM064 EN 11.0
Overcurrent characteristic
0
20
40
60
80
100
120
140
160
180
200
1
1.5
2.0
2.5
3.0
3.5
4.0
t
[s]
TRIP
I / I
r
ECSxS/P/M/A004, -008, -016, -032
ECSxS/P/M/A048
ECSxS/P/M/A064
ECSXA025
Fig. 9−1
Overcurrent characteristic ECSxM..., see also Rated data
^ 32
The overcurrent characteristic shows the maximum time t
TRIP
till the axis module
generates an I x t error. In order to reach this time t
TRIP
again, the time 3 x
t
axis module
with
the load I/I
r
= 0 A must be observed.
Device
t
axis module
[s]
Overcurrent characteristic
ECSxM004
54.6
I
@ t +
I
subprofile_x
I
rated
*
ǒ
I
subprofile_x
I
rated
* I @ t
subprofile_x
*1
Ǔ
@ e
*
t
subprofile_x
t
axis_module
ECSxM008
27.3
ECSxM016
27.3
ECSxM032
27.3
ECSxM048
29.5
ECSxM064
35.1
Overcurrent diagram for OC5 fault message
150
100
75
200
I
[%]
Motor
10
60
120
180
t [s]
44
ECSXA293
Fig. 9−2
Maximum overcurrent as a function of time