Mitsubishi Electric FR-A820-00046 Instruction Manual page 763

Parameters
Power failure stop function (Pr. 261 = "1, 11, 21")
● Even if power is restored during deceleration triggered by a power failure, deceleration stop is
continued after which the inverter stays stopped. To restart operation, turn the start signal OFF
then ON again.
Power
supply
NOTES If the automatic restart after instantaneous power failure is selected (Pr. 57 "Restart coasting time"
≠ "9999") while the power failure time deceleration stop function is set enabled (Pr. 261 = "1, 11, or
21"), the power failure time deceleration stop function is disabled.
Power supply
When the power failure time deceleration stop function is enabled (Pr. 261 = "1, 11, 21"), the
inverter will not start even if the power is turned ON or inverter reset is performed with the start
signal (STR/STF) ON. Turn OFF the start signal once and then ON again to make a start.
FR-A800
Pr. 261 = "1"
During deceleration at
occurrence of power failure
During stop at
occurrence of
power failure
Turn OFF STF once to make acceleration again
ON
Not started as inverter
is stopped due to power
failure
ON OFF
ON
Fig. 5-292:
Power restoration
Time
Output
frequency
Time
ON
(A) Application parameters
I001174E
5 - 583