Mitsubishi Electric 800 Series Instruction Manual page 32

 PID signal fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 Option fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 Inverter output fault
Operation panel
indication
Description
Check point
Corrective action
 Opposite rotation deceleration fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 Internal circuit fault
Operation panel
indication
Description
Check point
Corrective action
31
2. Protective Functions
2.5 Causes and corrective actions
E.PID
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. 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.
FR-E800 Instruction Manual (Function)
E.1
• 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.
• Check for excessive noise around the inverter.
• 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.
• Set the switch on the plug-in option, which is for manufacturer setting, back to the initial setting.
• FR-E800 Instruction Manual (Function)
• Instruction Manual of each option
E.10
The inverter output is shut off if the inverter detects an output current fault such as an earth (ground) fault that
occurred on the inverter's output side (load side).
Check for an earth (ground) fault in the motor and connection cable.
Remedy the earth (ground) fault or other fault.
E.11
Sensorless Sensorless Sensorless
The speed may not decelerate during low speed operation if the rotation direction of the speed command and
the estimated speed differ when the rotation is changing from forward to reverse or from reverse to forward during
torque control under Real sensorless vector control. The inverter output is shut off when overload occurs due to
the un-switched rotation direction. This protective function is not available in the initial status (V/F control). (This
function is only available under Real sensorless vector control.)
• Check that the rotation direction is not switched from forward to reverse rotation (or from reverse to forward)
during torque control under Real sensorless vector control.
• Prevent the motor from switching the rotation direction from forward to reverse (or from reverse to forward)
during torque control under Real sensorless vector control.
• Contact your sales representative.
FR-E800 Instruction Manual (Function)
E.13
Appears when the internal circuit is faulty.
――――
Contact your sales representative.