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P8.7
Motor voltage at frequency zero.
Note: motor identification automatically sets this parameter.
P8.8
PWM frequency. Values above default can cause thermic overload of the drive.
P8.9
0 = Chopper disabled
1 = Chopper enabled in Run state
2 = Chopper enabled in Ready state
P8.10
DC link voltage above which chopper is activated.
P8.11
DC current injected at start or stop.
P8.12
Time for DC current injection at stop.
P8.13
DC current injection starts below this frequency.
P8.14
Time for DC current injection at start.
P8.15
Voltage drop on stator windings, at motor nominal current, defined as % of nominal voltage.
Value affects motor torque estimation, slip compensation and voltage boost.
Note: it is suggested not to program manually the value, but to perform motor identification
procedure that automatically sets the value.
P8.16
This procedure measures motor stator resistance and automatically sets U/f characteristic, to
obtain good torque also at low speed.
0 = not active
1 = standstill identification
Run command must be given and hold high within 20s after programming the value 1. The mo-
tor does not rotate and the drive will automatically exit run state at the end of the measure-
ments.
Note: the drive exits run state only, if the measured current exceeds 55% of the motor nominal
current. Procedure sets the following parameters: P8.4, P8.5, P8.6, P8.7, P8.15.
3
O
UTPUT VOLTAGE AT ZERO FREQUENCY
S
WITCHING FREQUENCY
B
RAKE CHOPPER
B
RAKE CHOPPER THRESHOLD
DC
BRAKING CURRENT
DC
BRAKING TIME AT STOP
F
REQUENCY TO START
DC
BRAKING TIME AT START
M
OTOR STATOR VOLTAGE DROP
M
OTOR IDENTIFICATION
DC
BRAKING IN RAMP STOP
Parameter description
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