35
User’s manual
2.2.5.2 WAIT FOR MOTOR DEMAGNETIZING
When the drive is switched off it is dangerous to switch on immediately, due to the unknown magnetic
flux position that could produce a motor over–current. The only chance it’s to wait the time needed for
the magnetic flux to reduce itself with its time constant that depend on the motor type and can vary
from few milliseconds to hundreds of milliseconds.
For this reason has been introduced the parameter P28 that set the wait time after power switch off
after that, it’s possible to switch on the power another time: also if the user gives the RUN command
during this wait time, the drive waits to complete it before enabling another time the power.
Parameter P28 is defined in time units of 100us so the default value 10000 correspond to 1 second.
2.3 PROTECTION
2.3.1 VOLTAGE LIMITS
Name Description Min Max Default UM Scale
MAIN_SUPPLY P87 - Main Supply voltage 180.0 780.0 400 V rms 10
DCBUS_MIN_MAIN_LOST
P97 - Minimum voltage level for
forced mains off
100.0 1200.0 425 V 10
DCBUS_REF_MAIN_LOST
P98 - Voltage reference value in
Support 1
220.0 1200.0 600 V 10
DCBUS_REG_KP
P86 - Kp3 Bus control
proportional gain
0.05 10.00 3.5 100
KP_DCBUS
P105 - Corrective factor for Bus
voltage
80.0 200.0 100 % 10
DCBUS_MIN
P106 - Minimum voltage of DC
Bus
220.0 1200.0 400 V 10
DCBUS_MAX
P107 - Maximum voltage of DC
Bus
350.0 1200.0 800 V 10
DCBUS_BRAKE_ON
P108 - Bus voltage threshold for
brake ON
350.0 1200.0 770 V 10
DCBUS_BRAKE_OFF
P109 - Bus voltage threshold for
brake OFF
350.0 1200.0 760 V 10
DCBUS_REF
P123 - Smart brake voltage cut-
in level
300.0 1200.0 750 V 10
RECT_BRIDGE_SEL
C45 - Rectification bridge 0 =
diodes, 1 = semicontrolled
Range
0 1
0 Diods
1
Half controller
bridge
PW_SOFT_START_TIME P154 - Soft start enabling time 150 19999 500 ms 1
MAIN_LOST_SEL C34 - Managing mains failure
Range
0 1
0
Trying to
work
1 Recovery
2 Free
3
Emergency
brake
ALL_RST_ON_MAIN
C35 - Automatic alarm reset
when mains back on
0 1 0 1
EN_DCBUS_MAX_CTRL C47 - Enable smart brake 0 1 0 1
EN_PW_SOFT_START C37 - Enable soft start 0 1 1 1
DC_BUS D24 - Bus voltage 0 V 16
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