CHAPTER 7 - PROGRAMMING INFORMATION AND SUGGESTIONS
145
7.1.1 Starting by Voltage Ramp
(P202=0)
1) Set initial voltage, P101. Set initially to a low value;
2) When load is applied to the motor, set P101 to a value that allows
motor running smoothly from enable command;
3) SetP102tothetimerequiredforthemotorstart.Atrstsetshort
times,10to15seconds,afterwardstrytondthemostsuitable
starting condition for your load.
Figure 7.3 - Starting by Voltage Ramp
NOTES!
1) Vibrations can occur during the motor start, when long starting
times have been set, or motor is starting without load. In this case,
decrease the starting time;
2) If errors are detected during the motor start, check all connections
of the Soft-Starter to the power line, the motor connections, the
voltage levels of the power line, the fuses, circuit-breakers and
disconnecting switches.
U(V)
Start
100%Un
P101
P102
0
Enable
Voltage Ramp
t(s)
P102
P101
Voltage
Ramp
P640
P406
P401
P400
Disable
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