Mitsubishi Electric FR-F700PJ Series Manual page 58

Function Name
External thermal relay
operation
 
PTC thermistor
operation

Parameter storage
device fault
PU disconnection
Retry count excess
CPU fault
Output current
detection value
exceeded

Inrush current limit
circuit fault
Analog input fault
Overspeed
occurrence

PID signal fault
E.SAF
 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.
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Appears when the external thermal relay connected to the terminal OH operated.
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.
Appears when operation of the element where parameters are stored became abnormal. (control circuit
board)
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.
Appears when the operation was not restarted within the set number of retries.

Appears during the CPU and peripheral circuit errors.
Appears when output current exceeded the output current detection level set by the parameter.
Appears when the resistor of the inrush current limit circuit overheated.
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.
Stops the inverter outputs when the motor speed exceeds the Pr. 374 Overspeed detection level under IPM
motor control.
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.
 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.
Description Indication
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