During a constant speed operation, the operating frequency is saved
automatically in the following conditions: the operation command (Fx
or Rx) is off, a fault trip occurs, or the power is off.
When the operation command is turned on again, or when the
inverter regains the power source or resumes to a normal operation
from a fault trip, it resumes operation at the saved frequency. To
delete the saved frequency, use the multi-function terminal block. Set
one of the multi-function terminals to 20 (U/D Clear) and apply
signals to it during constant speed operation. The saved frequency
and the up-down operation configuration will be deleted.
5.4 3-Wire Operation
The 3-wire operation latches the signal input (the signal stays on after the button is
released), and is used when operating the inverter with a push button.
Px terminal setting
options
To enable the 3-wire operation, the following circuit sequence is necessary. The
minimum input time (t) for 3-wire operation is 1ms, and the operation stops when both
forward and reverse operation commands are entered at the same time.
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