Mitsubishi Electric FR-F820-04750 Instruction Manual page 332

(H) Protective function parameter
Emergency drive status monitor
● Set "68" in Pr. 52, Pr. 774 to Pr. 776, Pr. 992 to monitor the status of the emergency drive on the
operation panel.
● Description of the status monitor
Operation
panel
indication
0
1
2
3
4
5
11
12
13
14
15
2
3
4
Tab. 5-78:
The first digit remains the same as the previous numerical value (fault condition).
NOTES When the "retry" (Pr. 523 = "2
restart after instantaneous power failure function at the same time.
Parameter setting is not available during emergency drive operation.
To return to the normal operation during emergency drive operation, do the following:
(The operation will not be returned to normal only by turning OFF the X84 signal.)
● Reset the inverter, or turn the power supply OFF.
● Clear a fault by turning ON the X51 signal while the sequence function is enabled (when the
protective function is activated).
The operation is switched over to the commercial power supply operation in case of the following
during emergency drive operation:
● 24 V external power supply operation
● Power failure status or operation with the power supplied through R1/S1
● Undervoltage
While the electronic bypass sequence is set or when the operation is performed with the power
supplied through R1/S1, when Pr. 30 = "2", the emergency drive function is disabled.
5 - 170
Emergency drive setting
Emergency drive function
setting is not available.
Electronic bypass during
emergency drive operation
is disabled.
Electronic bypass during
emergency drive operation
is enabled.
Emergency drive status monitor description
, 3
Description
Emergency drive operating status
—
During normal operation
Operating properly
A certain alarm is occurring.
During emergency
A critical fault is occurring. The operation is being
drive operation
continued by the retry.
A critical fault is occurring. The continuous operation
is not allowed due to output shutoff.
During normal operation
Operating properly
A certain alarm is occurring.
During emergency
A critical fault is occurring. The operation is being
drive operation
continued by the retry.
A critical fault is occurring. The continuous operation
is not allowed due to output shutoff.
Electronic bypass is started during emergency drive (during acceleration/
deceleration to the switchover frequency).
During electronic bypass during emergency drive (waiting during the
interlock time).
During commercial power supply operation during emergency drive
") is selected, it is recommended to use the automatic
Parameters