58
Resetting the inverter initializes the internal accumulated heat value of the electronic thermal relay function.
The error message shows an operational error. The inverter output is not shut off.
Warnings are messages given before faults occur. The inverter output is not shut off.
Alarm warn the operator of failures with output signals. The inverter output is not shut off.
When faults occur, the protective functions are activated to shut off the inverter output and output the alarms.
The external thermal operates only when the OH signal is set in
Pr. 178
to
Pr. 182
(input terminal function selection).
This protective function is not available in the initial status.
This protective function is available when
Pr.872 Input phase loss protection selection
="1".
This function is available only under IPM motor control.
Fa
u
lt
External thermal relay
operation
Appears when the external thermal relay connected to the terminal OH operated.
PTC thermistor
operation
Appears when the resistance of the PTC thermistor, which is connected across terminals 2 and 10, reaches
the
Pr.561 PTC thermistor protection level
setting or higher.
Parameter storage
device fault
Appears when operation of the element where parameters are stored became abnormal. (control circuit
board)
PU disconnection
Appears when a communication error between the PU and inverter occurred, the communication interval
exceeded the permissible time during the RS-485 communication with the PU connecter, or communication
errors exceeded the number of retries during the RS-485 communication.
Retry count excess
Appears when the operation was not restarted within the set number of retries.
CPU fault
Appears during the CPU and peripheral circuit errors.
/
Output current
detection value
exceeded
Appears when output current exceeded the output current detection level set by the parameter.
Inrush current limit
circuit fault
Appears when the resistor of the inrush current limit circuit overheated.
Analog input fault
Appears if voltage (current) is input to terminal 4 when the setting in
Pr.267 Terminal 4 input selection
and the
setting of voltage/current input switch are different.
Overspeed
occurrence
Stops the inverter outputs when the motor speed exceeds the
Pr. 374 Overspeed detection level
under IPM
motor control.
PID signal fault
Appears when any of during PID control, PID upper limit (FUP), PID lower limit (FDN), and PID deviation
limit (Y48) turns ON during PID control.
E.SAF
Appears when an internal circuit error occurred.
Appears when either contact between the terminals S1 and SC or the terminals S2 and SC is open.
Function Name
Description
Indication
Summary of Contents for F720PJ-11KF
Page 88: ...88 MEMO ...
