Learning Advanced Features
5 Learning Advanced Features
This chapter describes the advanced features of the S100 inverter. Check the reference page in the
table to see the detailed description for each of the advanced features.
Auxiliary frequency
operation
Use the main and auxiliary frequencies in the predefined formulas
to create various operating conditions. Auxiliary frequency
operation is ideal for Draw Operation* as this feature enables fine-
tuning of operation speeds.
p.122
Jog operation
Jog operation is a kind of a manual operation. The inverter operates
to a set of parameter settings predefined for Jog operation, while
the Jog command button is pressed.
p.126
Up-down operation
Uses the upper and lower limit value switch output signals (i.e.
signals from a flow meter) as Acc/Dec commands to motors.
p.129
3-wire operation
3-wire operation is used to latch an input signal. This configuration is
used to operate the inverter by a push button.
p.130
Safety operation
mode
This safety feature allows the inverter’s operation only after a signal
is input to the multi-function terminal designated for the safety
operation mode. This feature is useful when extra care is needed in
operating the inverter using the multi-purpose terminals.
p.131
Dwell operation
Use this feature for the lift-type loads such as elevators, when the
torque needs to be maintained while the brakes are applied or
p.133
Slip compensation
This feature ensures that the motor rotates at a constant speed, by
compensating for the motor slip as a load increases.
p.134
PID control
PID control provides constant automated control of flow, pressure,
and temperature by adjusting the output frequency of the inverter.
p.136
Auto-tuning
Used to automatically measure the motor control parameters to
optimize the inverter’s control mode performance.
p.144
Sensorless vector
control
An efficient mode to control magnetic flux and torque without
special sensors. Efficiency is achieved through the high torque
characteristics at low current when compared with the V/F control
p.147
Energy buffering
operation
Used to maintain the DC link voltage for as long as possible by
controlling the inverter output frequency during power
interruptions, thus to delay a low voltage fault trip.
p.154
Used to save energy by reducing the voltage supplied to motors
during low-load and no-load conditions.
p.166
Used to prevent fault trips when the inverter voltage is output while
the motor is idling or free-running.
p.170
Auto restart operation
Auto restart configuration is used to automatically restart the
inverter when a trip condition is released, after the inverter stops
operating due to activation of protective devices (fault trips).
p.174
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