Toshiba TOSVERT VF-S11 User Manual

E6581158
F-48
6
H (I-gain adjustment parameter)
This parameter adjusts the integral gain level during PID control. Any deviations remaining unremoved
during proportional action are cleared to zero (residual deviation offset function).
A larger I-gain adjustment value reduces residual deviations. Too large an adjustment value, however,
results in an unstable event such as hunting.
Residual deviation
Process quantity setting value
Time
Feedback amount
(H = Large gain)
(H = Small gain)
H (D-gain adjustment parameter)
This parameter adjusts the differential gain level during PID control. This gain increases the speed of
response to a rapid change in deviation (difference between the frequency setting and the amount of
feedback).
Note that setting the gain more than necessary may cause great fluctuations in output frequency, and
thus operation to become unstable.
Previous deviation - current deviation
Large differential gain
Small differential gain
Time
Feedback amount

Toshiba TOSVERT VF-S11 Specifications

General

Model	TOSVERT VF-S11
Category	Inverter
Output Frequency	0.1-400Hz
Frequency Range	0.1-400Hz
Control Method	V/f Control, Sensorless Vector Control
Power Rating	0.2kW to 15kW
Cooling Method	Forced air cooling
Overload Capacity	150% for 60 seconds
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Communication	Modbus RTU
Input Voltage	200-240V, 380-480V
Braking Unit	Built-in (optional external braking resistor)