User Manual

10.4
Adjustment of the Io setpoint
It is important that the Io current of the connected asynchronous
machine is set according to the description under chapter 3.7.2
under code CO20.
Code Name Parameter (Factory setting is printed in bold) Acceptance
CO06 Control mode -O- V/f-characteristic control [SH + PRG]
-l- Io -control (only for Single drives)
CO20
Io-setpoint
Rated setpoint (PN,,,~,~~ = PNunit)
ON-LINE
0.0 A (0.1 A} 100.0 A
as from 100 A
(1 Al
INFO: Adjustable from 0.0 to 0.5 Im,,,,
10.5 Adjustment of the Imax limit
The torque controller has the same functions as the Imax limit
controller. The Imax current entered under code CO22 corresponds
to the maximum torque which the motor is able to perform.
Example:
If Imax is set to the rated current of the connected motor, the motor
tan only be loaded with the rated torque.
If a voltage of 1 OV is applied across terminals 3 and 4, the torque
setpoint is the same as the torque which the motor is able to
provide with the set Imax current.
Code
Name
Parameter (Factory setting is printed in bold) Acceptance
CO22
Imax-limit f
maxunlt
ON-LINE
upto100A
(0.1 A}
as from 100 A
11 Al
INFO: Adjustable from 0.06 to 1.0 Im,,
10.6
Adjustment of the torque controller
The torque controller must be set when the drive is under load,
provided that there is a rising torque characteristic of the load over
the Speed.
Set the field frequency setpoint for the torque setting.
When entering the torque setpoint, a torque reserve must be
provided which depends on the acceleration time and the inertia.
For this, a torque balance must be established.
After the drive has accelerated to the frequency setpoint the Speed
and thus the output torque tan be reduced until the desired
operating Point is reached. This is done by reducing the torque
setpoint at terminals 3 and 4.
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