V&T Technologies Co., Ltd.
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Chapter 6 Parameter Description
104
Display of operation panel
Unit place:
Over-voltage adjustment:
0: No action; 1: Action
Tens place
Under-voltage adjustment:
0: No action; 1: Action
Hundreds
place
Overmodulation:
0: No action; 1: Action
By setting PA07, ensure that output voltage will decrease automatically as the loads decrease under
proper operation. The inverter maximally decreases reactive power to offer further energy savings.
Adjust the parameter according to real load conditions. The larger the parameter is, more visible the
energy saving effect achieves, and the longer the response time lasts for the inverter converting from
energy saving condition to proper operation status.
Note:
This function is only applied to Vector control 1.
The function applies to valiable torque loads such as fan and pump. If used in applications of
constant torque loads and rapidly changing loads, the function will result delayed control
response.
This function is disabled during acceleration/deceleration process.
0: Magnetic flux braking disable
1: Magnetic flux braking enable
When the motor decreases, the inverter can rapidly slow down if magnetic flux braking action is selected.
Then the electric energy can be transformed to heat energy during the braking process.
Rapid deceleration can be realized by selecting magnetic flux braking action, but the output current will
be larger. Selecting no action, the deceleration will last longer, but the output current will be smaller.
Determine whether to use energy consumption braking using braking unit selection PA.09.
0: Energy consumption braking disable
1: Energy consumption braking enable
For large rotating inertia applications and when rapid stop by braking is required, select matched braking
unit and braking resistance and set braking parameter for the motor stop rapidly by braking.
Braking unit operating time PA.10 and braking unit action voltage PA.11 are only applied to inverter with
built-in braking unit.
Braking unit action cycle is fixed to be 100s. If PA.09 is set as 1, the use rate of the braking unit is fixed to
PA.07
Energy-saving coefficient
0 ~ 50 %(0%)
PA.08
Magnetic flux braking selection
0 ~ 1(1)
PA.09
Energy consumption braking selection
0 ~ 1(0)
PA.10
Braking unit operating time
100.0 s(100.0s)
PA.11
Braking unit action voltage
650 ~ 750 V(720V)
