Mitsubishi Electric FR-V500 Series Instruction Manual page 82

Control Panel
E.LF
Indication
Name
Output phase failure
This function stops the inverter output if one of the three phases (U, V, W) on the inverter's output
Description
side (load side) opens.
• Check the wiring (Check the motor for a fault.)
Check point
• Check that the capacity of the motor used is not smaller than that of the inverter.
• Wire the cables properly.
Corrective action
• Check the Pr. 251 "output phase failure protection selection" setting.
Control Panel
E.CPU
Indication
Name CPU error
Description
Stops the inverter output if the communication error of the built-in CPU occurs.
Check point
—
Corrective action Please contact your sales representative.
E. 6
Control Panel
Indication
E. 7
Name
CPU error
If the arithmetic operation of the peripheral circuit of the built-in CPU does not end within the
Description
predetermined period or if an error exists in the receive data of the built-in CPU, the inverter self-
determines it as an alarm and stops the output.
Check point
Check for devices producing excess electrical noises around the inverter.
• Connect devices securely.
• Take measures against noises if there are devices producing excess electrical noises around the
Corrective action
inverter.
• Please contact your sales representative.
Control Panel
E.P24
Indication
Name
24VDC power output short circuit
When the 24VDC power output from the PC terminal is shorted, this function shuts off the power
output.
Description
At this time, all external contact inputs switch off. The inverter cannot be reset by entering the RES
signal. To reset it, use the control panel or switch power off, then on again.
When the 24VDC power for encoder is shorted, this function shuts off the power output.
• Check for a short circuit in the PC terminal output.
Check point
• Check for wrong wiring.
• Check for a loose connector. Check that the cables are short-circuited.
• Remedy the short circuit portion.
Corrective action
• Connect the cables securely. Change the cables.
Control Panel
E.P12
Indication
Name
12VDC power output short circuit
Description When the 12VDC power for encoder is shorted, this function shuts off the power output.
• Check for wrong wiring.
Check point
• Check for a loose connector. Check for a break in the cable.
Corrective action Connect the cables securely. Change the cables.
Control Panel
E.CTE
Indication
Name Control panel power supply short circuit
When the control panel power supply (P5S of the PU connector) is shorted, this function shuts off
the power output. At this time, the control panel (parameter unit) cannot be used and RS-485
Description communication from the PU connector cannot be made. To reset, enter the RES signal or switch
power off, then on again.
When the 5VDC power for encoder is shorted, this function shuts off the power output.
• Check for a short circuit in the PU connector cable. Check for a loose connector.
Check point • Check that cables are not short-circuited.
• Check for wrong wiring.
• Check the PU and cable.
Corrective action
• Connect the cable securely. Change the cable.
FR-PU04V ELF
FR-PU04V CPU Fault
Fault 6
FR-PU04V
Fault 7
FR-PU04V E.P24
FR-PU04V E.P12
FR-PU04V
79
Errors (Alarms)
—
6