Omron NX-SID Series - Troubleshooting the Main Errors in the Safety I;O Units

9 - 5
9 Troubleshooting
NX-series Safety Control Unit User’s Manual (Z930)
9-2 Checking for Errors with the Indicators
9
9-2-2 Troubleshooting the Main Errors in the Safety I/O Units
9-2-2 Troubleshooting the Main Errors in the Safety I/O Units
TS indicator FS indicator
Cause Corrective action
Green Red Green Red
Lit Not Lit Lit Not Lit - Status is normal.
Lit Not Lit Not Lit FLS (1 s) Safety Process Data Communica-
tions Not Established - Incorrect
Unit Parameter Error
Refer to Safety Process Data Commu-
nications Not Established - Incorrect
Unit Parameter Error on page 9-36.
Lit Not Lit Not Lit FLS (1 s) Safety Process Data Communica-
tions Not Established, Incorrect
FSoE Slave Address Error
Refer to Safety Process Data Commu-
nications Not Established, Incorrect
FSoE Slave Address Error on page
9-37.
Lit Not Lit Not Lit FLS (1 s) Safety Process Data Communica-
tions Not Established, Incorrect
Frame Error
Refer to Safety Process Data Commu-
nications Not Established, Incorrect
Frame Error on page 9-37.
Lit Not Lit Not Lit FLS (1 s) I/O Power Supply Voltage Error Refer to I/O Power Supply Voltage
Error on page 9-41.
Lit Not Lit Not Lit FLS (1 s) Output Power Interrupt Circuit Error Refer to Output Power Interrupt Circuit
Error on page 9-42.
Lit Not Lit Not Lit FLS (1 s) External Test Signal Failure at
Safety Input
Refer to External Test Signal Failure at
Safety Input on page 9-43.
Lit Not Lit Not Lit FLS (1 s) Internal Circuit Error at Safety Input Refer to Internal Circuit Error at Safety
Input on page 9-40.
Lit Not Lit Not Lit FLS (1 s) Discrepancy Error at Safety Input Refer to Discrepancy Error at Safety
Input on page 9-43.
Lit Not Lit Not Lit FLS (1 s) Overload Detected at Test Output Refer to Overload Detected at Test
Output on page 9-44.
Lit Not Lit Not Lit FLS (1 s) Stuck-at-high Detected at Test Out-
put
Refer to Stuck-at-high Detected at Test
Output on page 9-44.
Lit Not Lit Not Lit FLS (1 s) Internal Circuit Error at Test Output Refer to Internal Circuit Error at Test
Output on page 9-40.
Lit Not Lit Not Lit FLS (1 s) Short Circuit Detected at Safety
Output
Refer to Short Circuit Detected at
Safety Output on page 9-45.
Lit Not Lit Not Lit FLS (1 s) Stuck-at-high Detected at Safety
Output
Refer to Stuck-at-high Detected at
Safety Output on page 9-45.
Lit Not Lit Not Lit FLS (1 s) Internal Circuit Error at Safety Out-
put
Refer to Internal Circuit Error at Safety
Output on page 9-41.
FLS (2 s) Not Lit - - Initializing Status is normal. Wait until processing
is completed.
Not Lit Lit Not Lit Not Lit System Error Refer to System Error on page 9-36.
No
t Lit L
it Not Lit FLS (1 s) NX Bus I/O Communications
Stopped
Refer to NX Bus I/O Communications
Stopped on page 9-39.
Not Lit FLS (1 s) Not Lit FLS (1 s) NX Unit I/O Communications Error Refer to NX Unit I/O Communications
Error on page 9-38.