Inverter Faults; Detecting Inverter Faults; Confirming Inverter Fault Status - Omron 3G3MV-PDRT2 User Manual

Communications Errors
8-4

Inverter Faults

Detecting Inverter Faults

■
When a fault is detected in the Inverter itself, the status will change as shown in the following table.
Function
Unit status
Remote I/O
Explicit messages
Special remote I/O

Confirming Inverter Fault Status

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The fault information for the Inverter can be checked by using the following methods. Identify the fault
using the fault code table on page 8-10 and the troubleshooting information in the Inverter user's
manual and take the necessary corrective actions.
Function
Operation indicators
on Inverter
Unit status
Explicit messages
Special remote I/O
8-8
When an fault is detected, bit 15 of the Unit Status (Error flag) is turned ON and the
fault code is stored in bits 8 to 14.
For details on the fault, check the fault code in the fault code table on page 10.
When COS communications are used, the remote I/O error flag may be turned ON
first.
The fault output allocated in the remote I/O will turn ON.
If the fault output is ON, turn OFF all related inputs controlling the Inverter, and pro-
gram a sequence to stop the program.
Read the fault output for Class 29, Instance 1, Attribute 0A using message communi-
cations. If there is a fault in the Inverter, the fault output will be ON, so turn OFF all
related inputs controlling the Inverter, and program a sequence to stop the program.
3G3MV/3G3RV:
Read register 002C, and check whether bit 14 (fault output) is ON (serious fault). If
bit 14 is ON, turn OFF all related inputs controlling the Inverter, and program a
sequence to stop the program.
3G3FV:
Read register 0010, and check whether bit 7 (fault output) is ON (serious fault). If bit
7 is ON, turn OFF all related inputs controlling the Inverter, and program a sequence
to stop the program.
When there is an Inverter fault, the details will be displayed on the Digital Operator of
the Inverter. The fault log can be checked using the monitor function.
3G3MV: U-09
3G3RV/3G3FV: U3
The fault code is stored in bits 8 to 14. Bit 15 (Error flag) is turned ON when a fault is
detected.
When COS communications are used, the remote I/O error flag may be turned ON
first.
An explicit message can be used to read the fault code of a detected fault.
Fault codes conforming to DeviceNet: Class 29/Instance 1/ Attribute 0D
Fault codes unique to this Unit: Class 2A/Instance 1/Attribute 70
3G3MV/3G3RV:
Read registers 0021. Check the fault status from the bit signals that are output for an
Inverter fault.
3G3FV:
Read registers 0014 to 0018. Check the fault status from the bit signals that are out-
put for an Inverter fault. The fault log can be checked using the monitor function (U3)
in registers 0090 to 0093.
Meaning
Meaning
Chapter 8