COSMOS DRIVER SERIES 3000 - USE AND MAINTENANCE MANUAL
1.3.8
KPP [rpm/G]
2
Position proportional gain.
The driver continuously detects the rotor position
and compares it to the reference position. The
difference between the two values is multiplied by
the proportional gain, in order to determine the
proportional speed.
The higher the position difference is, the higher the
speed rate applied to the motor will be. Through this
process, if it is continuous, the motor tends to
assume the reference position, even when the load
conditions applied to the motor change.
The proportional gain must be usually determined
for each specific case, according to the motor
application. This value is strongly influenced by the
inertial mass applied to the motor shaft. The more
the mass is, the lower the gain will be.
In the practical tests, it is necessary to find out the
gain empirically, by progressively increasing the
value, until the motor begins to be unsteady,
depending on the motor noise and vibrations. Once
you reached the limit, decrease the gain by 10–
20%, as a safety margin.
Min=0.0rpm/Gr, Max=+2500.4rpm/Gr
1.3.9
KDP []
2
Reserved.
1.3.10
VRMS NOMINAL[V]
3
Driver rated voltage.
This value indicates the driver power supply.
If the rated voltage of the selected motor is not
included in the value range set for the driver, the
error “Motor voltage different from driver voltage”
will be displayed.
Min=230V, Max=+480V.
1.3.11
USE EXT BRAKE
3
Use of the external brake resistance.
It enables you to determine whether to use the
internal resistance or the external one.
Options=No, Yes
1.3.12
CHECK 3PH LINE
3
It enables the control of absence of one or more
phases of input line voltage.
Options=No, Yes
1.3.13
PWM FREQ [KHz]
3
It sets the switching frequency of the motor output;
the higher the frequency is, the more the energy
losses are, causing the motor heating; the higher
the frequency is, the lower is the noise generated by
the switching.
Options=4, 8, 12, 16 kHz
1.3.14
CONTROL MODE
-
It displays whether the control is in position, in
speed or in torque.
Ver. 1.07
Pag. 64