6-15
Programming Your Application
650G AC Drive
Auto Restart
Parameters
S
to
S
provide the facility to automatically reset a choice of trip events and
restart the drive with a programmed number of attempts. If the drive is not successfully started,
a manual or remote trip reset is required.
The number of attempted restarts are recorded. This count is cleared after a trip-free period of
operation (5 minutes or 4 x AUTO RESTART DELAY, whichever is the longer); or after a
successful manual or remote trip reset; or by removing the Run signal (Terminal 7, DIN1).
Refer to Chapter 7: "Trips and Fault Finding" - Hexadecimal Representation of Trips.
Skip Frequencies
Parameters
S
ST11 to
S
ST14 control two programmable skip frequencies that can prevent the
drive from operating at frequencies that cause mechanical resonance in the load.
•
Enter the value of the frequency that causes the resonance into the SKIP FREQUENCY
parameter.
•
Enter a width for the skip band into the SKIP FREQUENCY BAND parameter.
The drive will then avoid sustained operation within the forbidden band as shown in the
diagram. The skip frequencies are symmetrical and thus work in forward and reverse.
Setting SKIP FREQUENCY or SKIP FREQUENCY BAND to 0 disables the corresponding
band.
Setpoint
Drive
Frequency
Frequency 1
Frequency 2
Skip band
Skip Frequency
Setpoint
Drive
Frequency
Setpoint
Drive
Frequency
Frequency 1
Frequency 2
