Omron 3G3JV-A2015 User Manual page 117

Maintenance Operations
Fault Fault name and meaning
display
efj External fault j (EFj)
An external fault has been
input from a multi-function
input.
A multi-function input 1, 2, 3,
or 4 set to 3 or 4 has
operated. The EF number
indicates the number of the
corresponding input (S2 to
S5).
f00
Digital Operator
transmission fault 1 (F00)
An initial memory fault has
been detected
f01
Digital Operator
transmission fault 2 (F01)
A ROM fault has been
detected.
f04
Initial memory fault (F04)
An error in the built-in
EEPROM of the Inverter has
been detected.
f05
Analog-to-digital converter
fault (F05)
An analog-to-digital converter
fault has been detected.
f07
Digital Operator fault (F07)
An error in the built-in control
circuit of the Digital Operator
has been detected.
Emergency stop (STP)
An emergency stop alarm is
input to a multi-function input.
(A multi-function input 1, 2, 3,
or 4 set to 19 or 21 has
operated.)
OFF Power supply error
• Insufficient power supply
voltage
• Control power supply fault
• Hardware fault
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Probable cause and remedy
• An external fault was input from a multi-function input.
→ Remove the cause of the external fault.
• The sequence is incorrect.
→ Check and change the external fault input sequence
including the input timing and NO or NC contact.
• The internal circuitry of the Inverter has a fault.
→ Turn the Inverter off and on.
→ Replace the Inverter if the same fault occurs again.
• The internal circuitry of the Inverter has a fault.
→ Turn the Inverter off and on.
→ Replace the Inverter if the same fault occurs again.
• The internal circuitry of the Inverter has a fault.
→ Initialize the Inverter with n01 set to 8 or 9 and turn the
Inverter off and on.
→ Replace the Inverter if the same fault occurs again.
• The internal circuitry of the Inverter has a fault.
→ Turn the Inverter off and on.
→ Replace the Inverter if the same fault occurs again.
• The internal circuitry of the Digital Operator has a fault.
→ Turn the Digital Operator off and on.
→ Replace the Digital Operator if the same fault occurs
again.
• An emergency stop alarm is input to a multi-function input.
→ Remove the cause of the fault.
• The sequence is incorrect.
→ Check and change the external fault input sequence
including the input timing and NO or NC contact.
• No power supply is provided.
→ Check and correct the power supply wire and voltage.
• Terminal screws are loosened.
→ Check and tighten the terminal screws.
• The Inverter is damaged.
→ Replace the Inverter.
Chapter 7
7-5