246
Causes and corrective actions
Operation Panel
Indication
E.SER
FR-PU04 Fault 14
FR-PU07 VFD Comm error
Name
Communication error (inverter)
Description
This function stops the inverter output when communication error occurs consecutively for more than
permissible retry count when a value other than "9999" is set in Pr. 335 RS-485 communication retry count
during RS-485 communication from the RS-485 terminals. This function also stops the inverter output if
communication is broken for the period of time set in Pr. 336 RS-485 communication check time interval.
Check point
Check the RS-485 terminal wiring.
Corrective action
Perform wiring of the RS-485 terminals properly.
Operation Panel
Indication
E.AIE
FR-PU04 Fault 14
FR-PU07 Analog in error
Name
Analog input error
Description
Appears when 30mA or more is input or a voltage (7.5V or more) is input with the terminal 2/4 set to
current input.
Check point
Check the setting of Pr. 73 Analog input selection and Pr. 267 Terminal 4 input selection. (Refer to page
143.)
Corrective action
Either give a frequency command by current input or set Pr. 73 Analog input selection or Pr. 267 Terminal
4 input selection to voltage input.
Operation Panel
Indication
E.13
FR-PU04
FR-PU07
Fault 13
Name
Internal circuit error
Description
Appears when an internal circuit error occurred.
Corrective action
Please contact your sales representative.
CAUTION
• If protective functions of E.ILF, E.PTC, E.PE2, E.CDO, E.IOH, E.SER, E.AIE are activated when using the FR-PU04, "Fault 14"
appears.
Also when the alarm history is checked on the FR-PU04, the display is "E.14".
• If alarms other than the above appear, contact your sales representative.
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