Lenze 4800 Manual page 106

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7.1.3.3 Field controller adjustment
Stop!
With field weakening operation, the motor speed can be so high that the motor will
be damaged. Do not exceed the maximum speed of the motor (see
manufacturer's information).
48XX/49XX controllers include two control concepts for override field control.
( The "V
( The control concept "with separate V
The control method is selected under code C230.
Code Name
[C230*] Control
mode for
the
override
field control
Note!
If field weakening operation is not required, enter the rated field current (C083).
To avoid impermissibly high armature voltage at active loads, the field current is
reduced to its minium value (C231) by inhibiting the controller until n
reached.
limitation" provides a very easy adjustment facility and is sufficient
ab
for most applications.
response and accuracy. The adjustment of this system is however more
complicated.
Possible settings
Lenze Selection
0 -0- Limitation of the armature voltage
-1- Control of the armature voltage
Configuration
controller" offers a higher dynamic
ab
Info
Field weakening must be permitted under
C231.
= 0 is
act
48XX/49XXSHB0399
7-15