Omron G9SX Series Manual page 34

Fault Detection
When the G9SX-GS@ detects a fault, the ERR indicator and/or other indicators light or blink to inform the user about the fault.
Check and take necessary measures referring to the following table, and then re-supply power to the G9SX-GS@.
Safety Guard Switching Unit
ERR Other
indicator indicator
Fault due to electro-
--- magnetic disturbance or of
Blinks
internal circuits.
Fault involved with safety
input A, channel 1
T1 blinks
Fault involved with safety
input A, channel 2
T2 blinks
Fault involved with safety
input B, channel 1
T6 blinks
Fault involved with safety
input B, channel 2
T7 blinks
Faults involved with
feedback/reset input
Lights
FB blinks
Fault in Expansion Unit
Fault involved with
instantaneous safety
outputs or logical AND
EI blinks
connection outputs
Fault involved with OFF-
delayed safety outputs
ED blinks
Fault Expected causes of the fault
1) Excessive electromagnetic disturbance
2) Failure of the internal circuit
1) Failure involving the wiring of safety
input A channel 1
2) Incorrect setting of cross fault detection
input
3) Failure of the circuit of safety input A
channel 1
1) Failure involving the wiring of safety
input A channel 2
2) Incorrect setting of cross fault detection
input
3) Failure of the circuit of safety input A
channel 2
1) Failure involving the wiring of safety
input B channel 1
2) Incorrect setting of cross fault detection
input
3) Failure of the circuit of safety input B
channel 1
1) Failure involving the wiring of safety
input B channel 2
2) Incorrect setting of cross fault detection
input
3) Failure of the circuit of safety input B
channel 2
1) Failures involving the wiring of
feedback/reset input.
2) Failures of the circuit of feedback/reset
input
1) Improper feedback signals from
Expansion Unit
2) Abnormal supply voltage to Expansion
Unit
3) Failure of the circuit of safety relay
contact outputs
1) Failure involving the wiring of
instantaneous safety outputs
2) Failure of the circuit of Instantaneous
safety outputs
3) Failure involving the wiring of the logical
AND connection output
4) Failure of the circuit of the logical AND
connection output
5) Impermissible high ambient
temperature
1) Failure involving the wiring of OFF-
delayed safety relay contact outputs
2) Incorrect set values for OFF-delay time
3) Failure of the circuit of OFF-delayed
safety relay contact outputs
4) Impermissible high ambient
temperature
G9SX-GS
Check points and measures to take
1) Check the disturbance level around the
G9SX-GS@ and the related system.
2) Replace with a new product.
1) Check the wiring to T11 and T12.
2) Check the wiring to Y1.
3) Replace with a new product.
1) Check the wiring to T21 and T22.
2) Check the wiring to Y1.
3) Replace with a new product.
1) Check the wiring to T61 and T62.
2) Check the wiring to Y2.
3) Replace with a new product.
1) Check the wiring to T71 and T72.
2) Check the wiring to Y2.
3) Replace with a new product.
1) Check the wiring to T31, T32 and T33.
2) Replace with a new product.
1) Check the connecting cable of Expansion Unit
and the connection of the terminating
connector
2) Check the supply voltage to Expansion Unit.
Note: Make sure that all Expansion units' PWR
indicators are lit.
3) Replace the Expansion Unit with a new one.
1) Check the wiring to S14 and S24.
2) Replace with a new product.
3) Check the wiring to L1.
4) Replace with a new product.
5) Check the ambient temperature and spacing
around the G9SX-GS@.
1) Check the wiring to S44 and S54.
2) Confirm the set values of the OFF-delay time
preset switches on the front and back of the
Unit.
3) Replace with a new product.
4) Check the ambient temperature and spacing
around the G9SX-GS@.
34