Mitsubishi Electric 800 Series Instruction Manual page 153

• The following diagram shows the operation of the emergency drive function (in the retry / output shutoff mode or
in the fixed frequency mode (Pr.523 = "211")).
Continuous operation except in case of critical faults
(such as E.PUE)
RES
X84
STF
ALM3
ALM
Frequency
Pr.524
Y65
• The following diagram shows the operation of switching over to the commercial power supply operation during
emergency drive operation by using the CS signal (when the electronic bypass during emergency drive operation
is enabled) (in the commercial mode or in the fixed frequency mode (Pr.523 = "411")).
Power supply
X84
STF
*1
CS
MC3
MC2
MC3
MC2
Frequency
Y65
*1 Input the CS signal via an external terminal.
NOTE
• The emergency drive function is not available for the FR-A800-CRN and FR-B, B3 series inverters.
Retry in case of critical faults
ON
ON
3s
Motor rotations per minute
Retry waiting time
Emergency drive in operation
ON
ON
3s
ON
ON
ON
ON
MC delay
Motor rotations per minute
Normal operation
Emergency drive continued
ON
ON
Coasting
Pr.514
ON
Emergency drive continued
ON
MC delay
Pr.136
Emergency drive commercial power supply operation
Emergency drive in operation
ON
4
Emergency drive finished
ON
ON
Time
Normal operation
ON
ON
Coasting
BCN-C22005-959
Time