Mitsubishi Electric FATEC FR-A800 Manual page 102

7
REVIEW OF INSTALLATION ENVIRONMENT
(c) Power failure for 100 ms or more
The protective function is reset automatically at the power restoration and the inverter can be
restarted.
Power
supply
f
N
N
Fig. 7.8 Instantaneous power failure for 100
7.1 Power supply of inverter (harmonics and instantaneous power failure)
100 ms
or more
15 ms
f
Output
shutoff
Motor coasts
to a stop.
Fault output/display is not performed.
ms or more
[Note]
When the start signal (STF, STR) is ON, the
inverter restarts at the power restoration. If
the motor is coasting at this time, the
overvoltage or overcurrent protection may be
t
activated and thus the inverter may trip. To
restart automatically at power restoration,
use the automatic restart after instantaneous
power failure function.
(The FR-A800 series inverters have this
function as standard. However, the function
is not selected at the factory shipment. Thus,
set the parameter A702 (Pr.57) to "0".)
For details on the operation of the automatic
restart after instantaneous power failure,
refer to (3).
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