Mitsubishi Electric FR-F820-00046, Instruction Manual

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Parameters (H) Protective function parameter
FR-F800 5 - 173
MC operation
 : MC-ON
×: MC-OFF
—: During inverter operation, MC2-OFF, MC3-ON
During commercial power supply operation, MC2-ON, MC3-OFF
Invariance: The status before changing the signal ON or OFF is held.
PID control during emergency drive operation
●
During emergency drive operation in the PID control mode, the operation is performed under PID
control using the Pr. 524 setting as a set point. Input the measured values in the method set in
Pr. 128 or Pr. 753.
●
When the PID control mode is selected for emergency drive, the PID action during emergency
drive operation is as follows depending on the PID control setting.
●
While the "retry" (Pr. 523 = "22 , 32 ") is selected in the PID control mode, if a retry occurs at an
occurrence of E.CPU, E.1 to E.3, E.5 to E.7 during emergency drive operation, the operation is
performed not under PID control but with the fixed frequency. Use Pr. 1013 "Running speed after
emergency drive retry reset" to set the fixed frequency.
NOTE During electronic bypass operation while the electronic bypass sequence is enabled (Pr. 135 = "1"),
the emergency drive function is not available.
Item
PID control action
Set point / measured value
input setting
Deviation input setting Without PID control setting
Measured value input
selection
Held Terminal 4 input Terminal 4 input
Forward action /
reverse action selection
Held Held Reverse action (initial setting)
Proportional band Held Held 100% (initial setting)
Integral time Held Held 1 s (initial setting)
Differential time Held Held Not used (initial setting)
Applied to the frequency /
calculation only
Applied to the frequency Applied to the frequency Applied to the frequency
Other PID-related settings Held Held Held
Tab. 5-74: Emergency drive operation depending on PID control setting
NOTE For details of the PID control, refer to page 5-353.