Omron G9SX User Manual page 88

1. Troubleshooting
G9SX-GS226-@
ERR Other
indicator indicator
Fault due to electro-
--- magnetic disturbance
Blinks or of internal circuits
Fault involved with
safety input A,
T1 blinks channel 1
Fault involved with
safety input A,
T2 blinks channel 2
Fault involved with
safety input B,
T6 blinks channel 1
Lights
Fault involved with
safety input B,
T7 blinks channel 1
Fault involved with
feedback/reset
inputs
Fault in Expansion
Unit
Abnormal supply
FB blinks voltage to
Expansion Unit
Failure in internal
circuit
G9SX
88
USER'S GUIDE
Fault Expected causes of the fault
(1) Affected by excessive electromagnetic
disturbance.
(2) Failure of the G9SX internal circuit.
(1) Incorrect wiring of safety input A
channel 1. (For example, cross fault
detection mode settings and safety
input wiring do not match.)
(2) Wiring to safety input A channel 1 and
24 V or another I/O terminal short
circuited.
(3) Short circuit between safety inputs
(when cross fault detection mode is
ON).
(4) Failure in internal circuit for T11 and T12. (4) Replace the G9SX.
(1) Incorrect wiring of safety input A
channel 2. (For example, cross fault
detection mode settings and safety
input wiring do not match.)
(2) Wiring to safety input A channel 2 and
24 V or another I/O terminal short
circuited.
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(4) Failure in internal circuit for T21 and T22. (4) Replace the G9SX.
(1) Incorrect wiring of safety input B
channel 1. (For example, cross fault
detection mode settings and safety
input wiring do not match.)
(2) Wiring to safety input B channel 1 and
24 V or another I/O terminal short
circuited.
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(4) Failure in internal circuit for T61 and T62. (4) Replace the G9SX.
(1) Incorrect wiring of safety input B
channel 2. (For example, cross fault
detection mode settings and safety
input wiring do not match.)
(2) Wiring to safety input B channel 2 and
24 V or another I/O terminal short
circuited.
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(4) Failure in internal circuit for T71 and T72. (4) Replace the G9SX.
(1) Incorrect feedback/reset input wiring.
(2) Connecting cable to Expansion Unit or
terminating connector disconnected.
(3) Voltage fluctuation caused by
insufficient supply voltage current
capacity.
(4) Supply voltage outside the rated value.
(5) Failure in internal circuit for T31, T32
and T33.
(6) Expansion Unit relay contact or internal
circuit failed.
Check points and measures to take
(1) Check the disturbance level around the
G9SX and the related system.
(2) Replace the G9SX.
(1) Check the wiring to T11, T12, T21, T22
and Y1.
(2) Check the wiring to T11 and T12.
(3) Check the wiring to T11, T12, T21 and
T22.
(1) Check the wiring to T11, T12, T21, T22
and Y1.
(2) Check the wiring to T21 and T22.
(3) Check the wiring to T11, T12, T21 and
T22.
(1) Check the wiring to T61, T62, T71, T72
and Y2.
(2) Check the wiring to T61 and T62.
(3) Check the wiring to T61, T62, T71 and
T72.
(1) Check the wiring to T61, T62, T71, T72
and Y2.
(2) Check the wiring to T71 and T72.
(3) Check the wiring to T61, T16, T71 and
T72.
(1) Check the wiring to T31, T32, and T33.
(2) Check the connecting cable to the
Expansion Unit and the connection of
the terminating connector.
(3) Change to a power supply with a
greater current capacity.
(4) Connect to a supply voltage of 24 VDC
-15% to +10%.
(5) Replace the G9SX.
(6) Replace the Expansion Unit.
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