12
OPERATION
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13
OPERATION
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User ManualUser Manual User ManualUser Manual
6.2 Current Limit6.2 Current Limit
At the Current Limiting mode, the output voltage increases quickly until
the output current reaches the limited current value Im. See figure 6-2.
And then the output current maintains below this limited value. Then the
output voltage is increased gradually, and the motor accelerate gradually;
when the motor's speed is close to the rate speed the output current
decreases quickly to the rate value Ie, the starting process finish . The
limited value can be set according to the load instance. The range of this
parameter is 0.2-4Ie.
This mode is used in the state in which the current is very important.
Special in the state in which the grid capacity is small. The parameter of
the Current Limit Multiples should be set 2.5-3. If this value is small, the
starting will be abnormal. At this mode, the time of 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.
At the Current Limiting mode, the output voltage increases quickly until
the output current reaches the limited current value Im. See figure 6-2.
And then the output current maintains below this limited value. Then the
output voltage is increased gradually, and the motor accelerate gradually;
when the motor's speed is close to the rate speed the output current
decreases quickly to the rate value Ie, the starting process finish . The
limited value can be set according to the load instance. The range of this
parameter is 0.2-4Ie.
This mode is used in the state in which the current is very important.
Special in the state in which the grid capacity is small. The parameter of
the Current Limit Multiples should be set 2.5-3. If this value is small, the
starting will be abnormal. At this mode, the time of 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.
ÏÞÁ÷Æð¶¯
II
Ie Ie
tt
Im1Im1
Im2 Im2
Im3Im3
Figure 6-2
Current Limiting startCurrent Limiting start
6.3 Jogging6.3 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.
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.
UU
U1U1
tt
U1U1
U1U1
Figure 6-2
6.4 Stop Mode6.4 Stop Mode
There are two stop mode, user can set this parameter according to load and
working condition.
There are two stop mode, user can set this parameter according to load and
working condition.
When receiving the stop signal, the terminals K22,K24 is open, the bypass
contactor is disconnect. The trigger signal of the SCR module is blocked
at the same time. Motor inertia stop according the load.
When receiving the stop signal, the terminals K22,K24 is open, the bypass
contactor is disconnect. The trigger signal of the SCR module is blocked
at the same time. Motor inertia stop according the load.
Free StopFree 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 soft stop time factor.
To gain the smooth stop effect, the oft top ime should be set
carefully.
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 soft stop time factor.
To gain the smooth stop effect, the oft top ime should be set
carefully.
Soft StopSoft Stop
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