Toshiba VF-AS1 Welding System User Manual


 
E6581301
F-50
6
6.27 Current and speed control adjustment
6.27.1 Current and speed control gain
H
HH
H
~ H
HH
H
: Current and speed control gain
For details, refer to Instruction Manual (E6581333) specified in Section 6.42.
6.27.2 Prevention of motor current oscillation at light load
H
HH
H
: Motor oscillation control
[Parameter setting]
Title Function Adjustment range Default setting
H Motor oscillation control
0:Disabled
1:Enabled(Low gain)
2:Enabled(Middle gain)
3:Enabled(High gain)
6.27.3 Max output voltage modulation rate
H
HH
H
: Max output voltage modulation rate
[Parameter setting]
Title Function Adjustment range Default setting
H Max output voltage modulation rate
0:
Standar
d
1:100%
2:102.5%
3:105%
• Function
When a motor is in unstable with light load, this parameter can change the motor gain to make motor
condition stable. First set H =and check the motor condition. Please set to in case motor
needs more stable condition. This parameter is effective only in V/F control mode (RV =,,)
• Function
In the case that Inverter output voltage drops and output current exceeds motor rating current at the frequency
higher than base frequency, Change this parameter setting and check whether the output current is reduced.