Toshiba TOSVERT VF-S11 Instruction Manual page 144

[Parameter setting]
If
excitation control) to increase the amount of energy consumed by the motor when the voltage reaches the
overvoltage protection level, and therefore the motor can be decelerated more quickly than normal decel-
eration.
If
(over-excitation control) to increase the amount of energy consumed by the motor as soon as the motor
begins to slow down, and therefore the motor can be decelerated still more quickly than quick decelera-
tion.
6.13.6 Output voltage adjustment/Supply voltage correction
6
• Function
Maintains a constant V/F ratio, even when the input voltage fluctuates.
Output voltage adjustment ............. Limits the voltage at frequencies exceeding the base frequency. Applied
[Parameter setting]
Title Function
Overvoltage limit operation
(Slowdown stop mode selection)
Overvoltage limit operation level
is set to (quick deceleration), the inverter will increase the voltage to the motor (over-
is set to (dynamic quick deceleration), the inverter will increase the voltage to the motor
: Base frequency voltage 1
: Supply voltage correction (output voltage adjustment)
Base frequency voltage1
The parameter adjusts the voltage corresponding to the base frequency 1
voltage exceeding the
to either "0" or "1".)
Supply voltage correction
The parameter maintains a constant V/F ratio, even when the input voltage decreases. The
torque during low-speed operation is prevented from decreasing.
Title Function
Base frequency voltage1
Supply voltage correction
(output voltage limited)
Adjustment range
0: Enabled
1: Prohibited
2: Enabled (forced quick
deceleration)
3: Enabled (dynamic quick
deceleration)
100-150%
set value is put out. (This function is enabled only when
when operating a special motor with low induced voltage.
Adjustment range
200V models: 50 - 330 (V)
400V models: 50 - 660 (V)
0: Supply voltage uncorrected,
output voltage limited
1: Supply voltage corrected,
output voltage limited
2: Supply voltage uncorrected,
output voltage unlimited
3: Supply voltage corrected,
output voltage unlimited
F-42
E6581158
Default setting
2
200V models: 134%
400V models: 140%
so that no
is set
Default setting
200V models:
200V
400V models:
400V
2 (WP, WN)
3 (AN)