Lenze EVF9333−xV - Manual (Page 325)

Configuration
Function blocks
Internal motor control with vector control (MCTRL2)
8
8.2
8.2.7
l
8.2−63 EDSVF9333V EN 6.2−04/2012
The output current is mainly limited for protecting the controller and
stabilising the drive control.
If the maximum permissible motor load is exceeded, the maximum output
current of the controller must be adjusted accordingly.
Parameter setting
Code Function
C0022 Maximum current in motor mode
C0023 Maximum current in generator mode
If you select a motor via C0086 the maximum current of which is much lower
than the output current of the controller, the maximum current in motor
mode (C0022) is automatically limited to the double rated motor current.
Mode of functioning
In the vector control mode the limit values are complied with by means of
the automatic limitation of the speed controller.
The speed controller is limited if the motor current has reached the limit set
under C0022 or C0023 (the controller supplies the max. output current). In
this status
Consequences
ƒ The motor cannot follow the speed setpoint.
ƒ MCTRL−IMAX is set to HIGH.
ƒ When selecting the automatic chopper frequency setting (C0018 = 0 or
6) a switch−over to a lower chopper frequency is carried out, so that the
unit will not be switched off.
Limitation of the output
current