Lenze EVS9332xS - Manual (Page 195)

Commissioning
Current controller adjustment
6
6.7
l
6.7−2 EDSVS9332S EN 6.0−07/2013
(
Stop!
Thermal destruction of the motor!
ƒ If the controller is enabled for too long and the motor current
is too high, the motor may be destroyed by overtemperature.
Protective measures:
ƒ Reduce motor current under C0022 and enable the controller
only for some seconds.
1. Inhibit the controller (X5/28 = LOW)
2. Deactivate quick stop (X5/E1 =HIGH or X5/E2 =HIGH)
3. Enable the controller for some seconds and then inhibit it again.
4. Record the current flowing in motor phase U with the controller being
enabled.
5. Set the gain V
p
(C0075) in such a way that the current rises rapidly.
6. Reduce the reset time T
n
(C0076) so much that the transient response
shows almost no overshoot and an optimum rise is achieved.
7. After each change of C0075 and C0076, the time course of the motor
current must be recorded and checked again.
9300std090
Fig. 6.7−1 Current characteristic for optimum controller adjustment
Time base 200 ms/DIV
Adjustment