5.4.6 ADV-20 Dwell Operation
The dwell operation is used to maintain speed (torque) at programmed frequencies during the
acceleration and deceleration process. This function is used in the application and release of the
mechanical brakes on lift-type loads (elevators). Inverter dwell operation is based on the Acc/Dec
dwell frequency (ADV-20, ADV-22) and the dwell time (ADV-21, ADV-23) set by the user. The
following points also affect dwell operation:
Acceleration Dwell Operation
When a run command is applied, acceleration continues up to the acceleration dwell frequency
(ADV-20) and constant speed is maintained for the acceleration dwell time (ADV-21, Acc Dwell
Time). After the Acc Dwell Time has passed, acceleration is carried out based on the acceleration
time and the operating speed that was originally set.
Deceleration Dwell Operation
When a stop command is applied, deceleration continues down to the deceleration dwell
frequency (ADV-22) and constant speed is maintained for the deceleration dwell time (ADV-23,
Dec Dwell Time). After the Dec Dwell Time has passed, deceleration is carried out based on the
deceleration time that was originally set, then the operation stops.
When DRV-09 (Control Mode) is set to 0 (V/F), the inverter can be used for applications requiring
the use of dwell frequencies. An example is applying and releasing mechanical brakes on lift-type
loads (elevators).
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