Mitsubishi Electric FR-F820-00046 Instruction Manual page 268

 Emergency drive operation selection (Pr.523, Pr.524)
• Use Pr.523 Emergency drive mode selection to select the emergency drive operation. Set a value in the hundreds place
to select the operation when a valid protective function is activated (critical fault) during emergency drive. Set values in the
ones and tens places to select the operation method.
Pr.523 setting
1[][] Output shutoff mode
2[][] Retry / output shutoff mode
*1
Retry / commercial mode
3[][]
*1
Commercial mode
4[][]
[]00 Normal operation
[]11
Fixed frequency mode
[]12
[]21
[]22
[]23
PID control mode
[]24
9999 Emergency drive disabled.
*1 Under PM motor control, the operation is not switched over to the commercial power supply operation the output is shut off.
 Retry operation during emergency drive (Pr.515, Pr.514)
• Set the retry operation during emergency drive operation. Use Pr.515 Emergency drive dedicated retry count to set the
retry count, and use Pr514 Emergency drive dedicated waiting time to set the retry waiting time.
• The ALM signal output conditions depend on the Pr.67 Number of retries at fault occurrence setting. (Refer to
261.)
• For the protective functions (critical faults) for which a retry is performed during emergency drive operation, refer to
269.
NOTE
• During emergency drive operation, Pr.65 Retry selection is not available.
 Electronic bypass during emergency drive (Pr.136, Pr.139, Pr.57)
• For selecting the commercial mode (Pr.523 = "3[][], 4[][]"), setting is required as follows.
Set Pr.136 MC switchover interlock time and Pr.139 Automatic switchover frequency from inverter to bypass
operation and assign MC2 and MC3 signals to output terminals.
When CS signal is assigned to an input terminal, set Pr.57 Restart coasting time ≠ "9999" and turn ON the CS signal. (In
the initial setting, the CS signal is assigned to the terminal CS.)
V/F control or Advanced magnetic flux vector control (Under PM motor control, the operation is not switched over to the
commercial power supply operation the output is shut off.)
Emergency drive operation mode
Forward rotation
Reverse rotation
Forward rotation
Reverse rotation
Forward rotation
(Second PID measured
value input)
Reverse rotation
(Second PID measured
value input)
Description
Output shutoff at a critical fault occurrence.
Retry operation at a critical fault occurrence. (Output shutoff at
the occurrence of a fault for which retry is not permitted.)
The output is shut off when a critical fault for which retry is not
permitted occurs, or the retry count is exceeded.
Retry operation at a critical fault occurrence. (Electronic bypass
at the occurrence of a critical fault for which retry is not
permitted.)
The operation is switched over to the commercial power supply
operation when a critical fault for which retry is not permitted
occurs, or the retry count is exceeded. While Pr.515 = "9999",
the operation is switched over to the commercial power supply
operation when the retry count reaches 200.
The operation is switched over to the commercial power supply
operation when a critical fault occurs.
The operation is performed with the same set frequency and by
the same starting command as those in the normal operation.
Use this mode to avoid output shutoff due to a fault.
The operation is forcibly performed with the frequency set in
Pr.524.
Even when the motor is stopped, the operation is started by the
emergency drive operation.
The operation is performed under PID control using the Pr.524
setting as a set point. The measured values are input in the
method set in Pr.128.
The operation is performed under PID control using the Pr.524
setting as a set point. The measured values are input in the
method set in Pr.753.
5.7 (H) Protective function parameter
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page
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267
5. PARAMETERS