Setting Of The Current Limit (Imax) - Lenze 8201 Operating Instructions Manual

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5.3.3
Code Name
C022 I
max
motor mode
C023 I
max
generator mode
Function
Adjustment
Drive characteristic
when reaching the limit
value
Setting of the current limit (I
Possible settings
Lenze Selection
limit 150 30
limit 80 30
The controllers are equipped with a current-limit control which determines the
dynamic response under load. The measured load is compared with the limit values
set under C022 for motor load and under C023 for generator load. If the current-limit
values are exceeded, the controller will change its dynamic response.
The acceleration and decleration time should be set short enough so that the drive can
follow the speed profile without reaching I
-
During acceleration:
- Expansion of the acceleration ramp.
-
During deceleration:
- Expansion of the deceleration ramp.
-
When the load increases at constant speed:
- When the motor-current limit value is reached:
Reduction of the field frequency to 10Hz.
- When the generator-current limit value is reached:
Increase the field frequency to the maximum frequency (C011).
- Stop the field-frequency change if the load falls below the limit value.
Commissioning
)
max
Info
{1 %} 150
{1 %} 110
of the controller.
max
IMPORTANT
820XBA1097
5-7