Jump Frequencies; Continuing Operation By Automatic Fault Reset - YASKAWA VS mini J7 Series Instruction Manual

Jump frequencies (n49 to n51)
This function allows the prohibition or "jumping" of critical frequencies so
that the motor can operate without resonance caused by machine systems.
This function is also used for dead band control. Setting the value to 0.00Hz
disables this function.
Set prohibited frequency 1 or 2 as follows :
OUTPUT FREQUENCY
Operation is prohibited within jump frequency range.
However, motor operates without jumping during accel/decel.
Continuing operation by automatic fault reset (n48)
Sets the inverter to restart and reset fault detection after a fault occurs.
The number of self-diagnosis and retry attempts can be set at n48 up to 10.
The inverter automatically restarts after the following faults occur :
OC (overcurrent)
GF (ground fault)
OV (overvoltage)
The number of retry attempts are cleared to 0 in the following cases :
(1) If no other fault occurs within 10 minutes after retry
(2) When the fault reset signal is ON after the fault is detected
(3) Power supply is turned OFF
n49
n50
n51
n51
FREQUENCY REFERENCE
n49 Ä n50
If this condition is not satisfied
the inverter displays EMM for
one second and restores the
data to original settings.
53