8 Parameter list
8.4 Parameter groups for RASP5
190
Rapid Link 5 · RAMO5 · RASP5
05/20 MN034004EN
www.eaton.com
P6-12
Overvoltage Current-
limit
Current limitation to prevent over voltage trips
This parameter is only active at Speed Control with Torque
Limit (P6-01 = 1) and becomes effective in case the DC link
voltage exceeds a threshold. This value, set internally, is just
below the one for a trip because of over voltage. P6-04 limits
the torque producing current at the output, to prevent energy
feedback which may lead to an over voltage trip. A small
value of P6-12 limits the torque of the motor, when the DC
link voltage exceeds the threshoild. A high value can lead to
current distorsions and to a rough behavior of the motor.
%
0
100
5
P6-13
LoadInertiaFactor
Ratio of the inertia of a complete system to the one of a
motor only (J
tot
/J
mot
)
The default value (10) can mostly be kept. It is used as feed
forward, to provide the optimal torque during the accelera-
tion phase. By using the exact value, a better reaction and
dynamics of the complete system will be achieved. If the
ratio of the inertias is not known, the default setting should
not be changed.
0
600
10
P6-14
t-Excitation-V/f
Magnetizing period
Induction motors (P6
‐
01 = 0, 1, 6):
This parameter defines a delay time for the control of the
magnetizing current after a Start signal for the drive.
Too low values can cause an over current trip, if the accele-
ration ramp is very short.
PM
‐
motors (P6
‐
01 = 2, 3):
This value is used to align the rotor flux on enable.
ms
0
5000
Mod Dep
P6-15
Torque Boost
Torque Boost at low speeds
Set in % of the motor rated current (P1-08). At lower speeds
a current is injected into the motor, to achieve an effective
operation. Parameter P6-16 determines, up to which speed
P6-15 is effective.
Setting of P6-15:
• Run the motor at the lowest speed, which is required by
the application
• Increase value of P6-15, until the reuired torque is
present as well as a smooth opreation of the motor.
Remark
:
This function is not active with Speed Control (V/f, P6-01 = 6).
%
0
100
0
P6-16
f-Torque Boost Limit
Torque Boost Range
Determines the frequency in % of P1-09 up to which the
torque boost set with P6-15 is active.
Above this frequency the torque boost is not active.
%
0
50
0
P6-17
PM-MotorSignalIn-
Level
Selection of voltage and duration of the signal to identify the
rotor position at PM motors
The default setting is 10. Setting this value too low can cause
the rotor position not to be detected, whereas too high values
can cause a trip due to over current.
–
0
200
10
P6-18
Overmodulation
Enabling overmodulation increases the maximum available
output voltage to the motor, thereby reducing the motor
current for a given power. This can reduce thermal losses in
the motor and drive, but will result in a less sinusoidal motor
current waveform.
–
0
1
0
Parameter
Designation
Description
Unit
Min
Max
DS