Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 696

• Operation example at the time of power failure occurrence 1
Control power
AC power supply
• Operation example at the time of power failure occurrence 2 (when the AC power supply is restored)
Control power supply
AC power supply
• Operation example at the time of power failure occurrence 3 (when continuing the operation)
Control power
AC power supply
AC power supply
supply
ON
Y85(MC)
X70
X71
ON
STF(STR)
Output
frequency
(Hz)
AC
ON
Y85(MC)
X70
OFF
X71
ON
STF(STR)
Output
frequency
(Hz)
AC
supply
ON
Y85(MC)
ON
X70
OFF
X71
ON
STF(STR)
Output
frequency
(Hz)
DC power supply
ON
ON
ON
ON
Motor
coasting
Approx.
200ms
Back up operation
DC AC
Power restoration
Turns off after stop
ON
while running
ON
ON
Motor
coasting
Approx.200ms
Back up operation
DC
AC
Power restoration
ON Remains on while running
Time
Back up operation
Time
Time
5. PARAMETERS
5.16 (G) Control parameters
1
2
3
4
5
6
7
8
9
10
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