AZ
2
USER MANUAL
ST.TEC.003.EN Rev. 2.1
19 / 52
Table 10: ramps advanced parameters
4.3.
Current limits
The drive monitors the current absorption during all the motor movement using two thresholds, one
for the start phase and the second during the rest of the run as shown in this Figure 9:
I
t
C106
C102
C108
V
t
M101
M102
M100
!
Figure 9: current monitoring parameters
The first threshold is used for a time given by the sum of
M101
and
C106
= 1 s. The user can set the
nominal current threshold
C108
, while the inrush one
C102
is calculated as 2 times the first value.
Either the drive can go in block state or not when the current limit is exceeded, depending on the
user choice. If the block is disabled (
C107
= OFF), the drive will read the overcurrent as a limit switch
permitting only the movement in the opposite direction.
The parameters below configure the current limit functions for the opening movement of motor 1
(see 8.3 for the complete list):
Label
Output
Function
Range
Default
value
C107
Motor 1
Enables the block in case of overcurrent during
opening
ON / OFF
ON
C108
Motor 1
High threshold of nominal current control
during opening
1 – 11 [A]
10
Table 11: example of current limit parameters
The user can set different current limits for the two motor and for each direction.
