Eaton Rapid Link RAMO5, Manual

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10 Parameter list
10.4 Parameter groups for RASP
Rapid Link 5 · RAMO5 · RASP5 10/19 MN034004EN www.eaton.com
187
P6-12 Overvoltage Currentlimit Current limitation to prevent over voltage trips
This parameter is only active at Speed Control with Torque
Limit (P4-01 = 0) 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 (Jtot / Jmot)
The default value (10) can mostly be kept. It is used as feed
forward, to provide the optimal torque during the acceler-
ation 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 factory setting should
not be changed. 0 600 10
P6-14 t-Excitation-V/f Magnetizing period in V/f and PM Mode
Induction motors (P6-01 = 6): This parameter defines a
delay time for the control of the magnetizing current after
a Start signal for the drive in V/f mode. Too low values can
cause an over current trip, if the acceleration 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.
Note:
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-MotorSignalInLevel Selection of voltage and duration of the signal to identify
the rotor position at PM motors
Factory setting is 10. Setting this value too low can cause
that the rotor position is not detected, whereas too high
values can cause a trip due to over current. – 0 200 10
P6-18 Overmodulation Enabling over-modulation increases the maximum avail-
able 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 sinu-
soidal motor current waveform. – 0 1 0
Para-
meter Designation Description Unit Min Max DS