System Manual – MOVIDRIVE® compact Drive Inverters
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Explanation of the parameters
Parameters
P321 / P331 Boost
1 / 2
Setting range: 0 ... 100 %
With VFC & GROUP: Manual setting to increase the starting torque by increasing the
output voltage in the range below the transition speed.
With VFC: Manual setting is usually not required. In exceptional cases, manual setting
may be necessary to increase the breakaway torque. In this case set to max. 10 %.
P322 / P332 IxR
compensation 1/2
Setting range: 0 ... 100 %
The I
×
R value of the matching motor is set as the factory setting.
In VFC operating mode, this parameter acts on the parameters of the calculated motor
model that create the torque. When P320 Automatic adjustment 1 / P330 Automatic
adjustment 2 = ON the setting is made automatically. If set to 100 %, the output voltage
of the inverter is increased by 50 V when the rated current of the motor flows. Manual
alterations to individual controller parameters are reserved for optimization by special-
ists.
P323 / P333 Pre-
magnetization time
1 / 2
Setting range: 0 ... 0.1 ... 2 s
Pre-magnetization serves to establish a high motor torque and starts when the inverter
is enabled.
Pre-magnetization is in effect in VFC with encoder feedback operating mode with:
•
P730 Brake function 1 / P733 Brake function 2 active
•
P710 Standstill current 1 / P711 Standstill current 2 Switched off
P324 / P334 Slip
compensation 1 / 2
Setting range: 0 ... 500 1/min
Only effective in VFC, VFC-n control and U/f operating modes. Slip compensation
increases the speed accuracy of the motor. If values are entered manually, you will have
to enter the rated slip of the connected motor. A setting range of +/– 20 % of the rated
slip is permitted if a value other than the rated slip is entered to compensate for fluctua-
tions between various motors.
1
2
58443AEN
Figure 39: How the boost works (figure not to scale)
0
0
n
100% boost
100% boost
0% boost
0% boost
50V
50V
n
Eck
n
Eck
n
Eck
/10
U [V]
A
U [V]
A
U
Amax
U
Amax
Setting range h
boost
Setting range h
boost
VFC & GROUP
VFC
P6..
P60.
P600
Summary of Contents for MOVIDRIVE compact MCH41A
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