Mitsubishi Electric FR-F740 EC Instruction Manual page 258

Motor brake and stop operation
Fig. 6-56:
When Pr. 522 ≠ "9999", output stop function disables DC injection brake operation, so the
NOTES
motor coasts to a stop when the output frequency falls to Pr. 522 or lower.
Output stop function is disabled during PID control, JOG control, power failure stop, and
traverse function.
Output stop function does not operate during reverse rotation deceleration. However, when
the frequency setting signal and output frequency falls to Pr.522 or lower, the inverter coasts
to a stop.
During the output stop due to the output stop function (when forward/reverse command is
given, but frequency command is not given), FWD/REV LED indication on the operation
panel flickers fast.
6 - 108
Example: Target frequency = analog input command,
start signal always ON
Analog input command
Pr. 522 + 2Hz
Pr. 522
Output frequency
Pr. 522 + 2Hz
Pr. 522
Pr. 13
Inverter output
shutoff
STF
RUN
After a stop, inverter re-starts accelerating at Pr.13 Starting frequency.
The output frequency before the slip compensation is compared with the Pr. 522 setting.
Steepness of the slope depends on the acceleration/deceleration time settings such as Pr. 7.
Example 2: Target frequency = analog input command, start signal always ON
Inverter output shutoff
Parameter
Time
Time
I002098E