NIetz Electric Co.,Ltd
Soft starter SSN/SSA serie User Manual
14
starting is concerned to the parameter of the current limit multiples. The more this value is,
the shorter the time of starting is. Vice versa. For detail see chapter 8 and chapter 9.
6.3 Jogging
At this start mode, the output voltage reaches the initial voltage U1 quickly, and remains
unchanged. Changing the U1, the output voltage and torque of the motor will change corresponding.
(See figure 6-3). It is convenient to judge the director of the motor.
6.4 Stop Mode
There are two stop mode, user can set this parameter according to load and working condition.
●
Free stop
When receiving the stop signal, the terminals K22,K24 is open, the bypass contactor is disconnect.
The trigger signal of the SCR module is close at the same time. Motor inertia stop according the load.
●
soft stop
At this stop mode, when receiving the stop signal, the bypass contactor is disconnected. At the
same time, motor is controlled through SCR. The output voltage decreases gradually. At last motor
stop completely. The stop time is related to the parameter of load and factor of soft stop time.
To gain the smooth stop effect, the “soft stop time”should be set carefully.
I
I e
t
I
m1
I
m2
I
m3
图 6-2
Figure 6-2
图 6-3
U
U
1
＇
t
U
1
U
1
＇＇
Figure 6-3
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