Mitsubishi Electric FR - F700 Programming Manual page 32

(3) Fault clear signal (X51 signal)
The X51 signal cancels a fault without resetting the inverter when an inverter fault
occurs.
The X51 signal cancels an inverter fault while the PLC function operation continues.
Enable the X51 signal by setting "51" in any of Pr.178 to Pr.189 (Input terminal function
selection) in advance.
Fault occurs
Fault status
(terminal ABC)
X51 signal
• Fault clear from the X51 signal is invalid during the retry operation (including the
waiting time for a retry).
(The X51 signal is available when the retry count excess (E.RET) occurs.
• If a fault clear is performed, start commands from PU and communication are also
cleared. (The statuses other than start command from communication remain the
same at a fault clear.)
REMARKS
•E.CPU, E.P24, E.1, E.2, E.6, E.7, E.13, E.PE2 cannot be cleared by the X51 signal.
CAUTION
•The cumulative heat values of the electronic thermal relay and the
regenerative brake are not cleared at a fault clear. A fault like E.THM, E.THT,
E.BE may occur again.
•The inverter is in stop status immediately after a fault clear. However, the
inverter restarts its operation after the fault is cleared when a start command
has been ON.
•Pressing the STOP/RESET key on the operation panel or parameter unit
activates a normal reset at a fault occurrence. Take caution not to press it by
accident.
•Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function
selection) may affect the other functions. Set parameters after confirming the
function of each terminal.
OFF ON OFF
Fault is cleared by turn
ON of X51 signal.
Inverter status monitoring, special registers
If a fault occurs while the X51 signal has
been ON, the fault is not cleared.
ON
If a fault occurs while the X51
signal has been ON, turn OFF
the X51 signal once, then turn it
ON again.
for control
OFF ON
Fault is cleared by
turn ON of X51 signal.
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