Input Signal Operation; Emergency Drive Status Monitor - Mitsubishi Electric FR-F800 Instruction Manual

(H) Protective function parameter
Input signal operation
• During emergency drive operation in the fixed frequency mode or in the PID control mode, input signals unrelated to the
emergency drive become invalid with some exceptions.
• The table below shows functions of the signals that do not become invalid during emergency drive operation in the fixed
frequency mode or in the PID control mode.
Input signal status
Valid
Held
Always-ON
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
Emergency drive setting
indication
Emergency drive function setting
0
is not available.
1
2
3 Electronic bypass during
emergency drive operation is
4
disabled.
5
11
12
13
14
Electronic bypass during
emergency drive operation is
15
enabled.
2[]

3[]

4[]


The first digit remains the same as the previous numerical value (fault condition).
NOTE
• When the "retry" (Pr.523 = "2[][], 3[][]") is selected, it is recommended to use the automatic 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.
Caution
 When the emergency drive operation is performed, the operation is continued or the retry is
repeated even when a fault occurs, which may damage or burn the inverter and motor. Before
restarting the normal operation after using this function, make sure that the inverter and motor have
no fault. Any damage of the inverter or the motor caused by using the emergency drive function is
not covered by the warranty even within the free guarantee period.
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PARAMETERS
Fixed frequency mode
OH, TRG, TRC, X51, RES, X70, X71
RT, X18, SQ, X84
—
—
During normal operation
During emergency drive
operation
During normal operation
During emergency drive
operation
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
PID control mode
OH, TRG, TRC, X51, RES, X70, X71
RT, X18, SQ, X64, X65, X66, X67, X79, X84
X14, X77, X78, X80
Description
Emergency drive operating status
Operating properly
A certain alarm is occurring.
A critical fault is occurring. The operation is being
continued by the retry.
A critical fault is occurring. The continuous operation is
not allowed due to output shutoff.
Operating properly
A certain alarm is occurring.
A critical fault is occurring. The operation is being
continued by the retry.
A critical fault is occurring. The continuous operation is
not allowed due to output shutoff.