Mitsubishi Electric FR-F800 Series Instruction Manual page 611

Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
 Others
Indicate the status of the inverter. It is not a fault.
Operation panel
indication
Name
Description
610
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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E.PCH
Pre-charge fault
The inverter output is shut off when the pre-charge time exceeds Pr.764 Pre-charge time limit. The inverter
output is shut off when the measured value exceeds Pr.763 Pre-charge upper detection level during pre-
charging. This function is available when Pr.764 and Pr.763 are set (refer to
is not available in the initial status.
• Check that the Pr.764 setting is not too short.
• Check that the Pr.763 setting is not too small.
• Check that the Pr.127 PID control automatic switchover frequency setting is not too low.
• Check for a break in the connection to the pump.
• Set the Pr.764 setting longer.
• Set the Pr.763 setting larger.
• Set the Pr.127 setting higher.
• Check the connection to the pump.
E.PID
PID signal fault
The inverter output is shut off if the measured value exceeds the PID upper limit or PID lower limit parameter
setting, or the absolute deviation value exceeds the PID deviation parameter setting during PID control. Set this
function in Pr.131 PID upper limit, Pr.132 PID lower limit, Pr.553 PID deviation limit, and Pr.554 PID signal
operation selection. (Refer to
The inverter output is shut off when the input pressure reaches the fault level under PID input pressure control.
Set this function in Pr.1370 Detection time for PID limiting operation and Pr.1379 PID input pressure fault
level. (Refer to page 459.) This protective function is not available in the initial status.
• Check the meter for a failure or break.
• Check that the parameter settings are correct.
• Check that the meter has no failure or break.
• Set the parameters correctly.
E. 1 to E. 3
Option fault
• The inverter output is shut off when a contact fault is found between the inverter and the plug-in option, or when
the communication option is not connected to the connector 1.
• Appears when the switch for manufacturer setting of the plug-in option is changed.
• Check that the plug-in option is plugged into the connector securely. (1 to 3 indicate connector numbers for
connection of options.)
• Check for excessive noise around the inverter.
• Check if the communication option is connected to the connector 2 or 3.
• Connect the plug-in option securely.
• Take measures against noises if there are devices producing excessive electrical noises around the inverter.
If the problem still persists after taking the above measure, contact your sales representative.
• Connect the communication option to the connector 1.
• Set the switch on the plug-in option, which is for manufacturer setting, back to the initial setting. (Refer to the
Instruction Manual of each option.)
E.0
No fault history
Appears when no fault records are stored. (Appears when the fault history is cleared after the protective function
has been activated.)
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FR-LU08 indication Pre-charge fault
FR-LU08 indication PID signal fault
page 419.) This protective function is not available in the initial status.
to
FR-LU08 indication Fault 1 to Fault 3
FR-LU08 indication No faults
page 445). This protective function