Omron G9SX Series, User Manual

Page: 88 / 104

Ap
pe
nd
ix
1. Troubleshooting
88
G9SX
USER'S GUIDE
G9SX-GS226- @
ERR
indicator
Other
indicator
Fault Expected causes of the fault Check points and measures to take Page
Blinks
---
Fault due to electro-
magnetic disturbance
or of internal circuits
(1) Affected by excessive electromagnetic
disturbance.
(1) Check the disturbance level around the
G9SX and the related system.
---
(2) Failure of the G9SX internal circuit. (2) Replace the G9SX. ---
Lights
T1 blinks
Fault involved with
safety input A,
channel 1
(1) Incorrect wiring of safety input A
channel 1. (For example, cross fault
detection mode settings and safety
input wiring do not match.) (1) Check the wiring to T11, T12, T21, T22
and Y1.
63
(2) Wiring to safety input A channel 1 and
24 V or another I/O terminal short
circuited. (2) Check the wiring to T11 and T12. ---
(3) Short circuit between safety inputs
(when cross fault detection mode is
ON).
(3) Check the wiring to T11, T12, T21 and
T22.
63
(4) Failure in internal circuit for T11 and T12. (4) Replace the G9SX. ---
T2 blinks
Fault involved with
safety input A,
channel 2
(1) Incorrect wiring of safety input A
channel 2. (For example, cross fault
detection mode settings and safety
input wiring do not match.) (1) Check the wiring to T11, T12, T21, T22
and Y1.
63
(2) Wiring to safety input A channel 2 and
24 V or another I/O terminal short
circuited. (2) Check the wiring to T21 and T22. ---
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(3) Check the wiring to T11, T12, T21 and
T22.
63
(4) Failure in internal circuit for T21 and T22. (4) Replace the G9SX. ---
T6 blinks
Fault involved with
safety input B,
channel 1
(1) Incorrect wiring of safety input B
channel 1. (For example, cross fault
detection mode settings and safety
input wiring do not match.) (1) Check the wiring to T61, T62, T71, T72
and Y2.
63
(2) Wiring to safety input B channel 1 and
24 V or another I/O terminal short
circuited. (2) Check the wiring to T61 and T62. ---
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(3) Check the wiring to T61, T62, T71 and
T72.
63
(4) Failure in internal circuit for T61 and T62. (4) Replace the G9SX. ---
T7 blinks
Fault involved with
safety input B,
channel 1
(1) Incorrect wiring of safety input B
channel 2. (For example, cross fault
detection mode settings and safety
input wiring do not match.) (1) Check the wiring to T61, T62, T71, T72
and Y2.
63
(2) Wiring to safety input B channel 2 and
24 V or another I/O terminal short
circuited. (2) Check the wiring to T71 and T72. ---
(3) Short circuit between safety inputs
(when cross fault detection mode is ON).
(3) Check the wiring to T61, T16, T71 and
T72.
63
(4) Failure in internal circuit for T71 and T72. (4) Replace the G9SX. ---
FB blinks
Fault involved with
feedback/reset
inputs
(1) Incorrect feedback/reset input wiring. (1) Check the wiring to T31, T32, and T33. 62
Fault in Expansion
Unit (2) Connecting cable to Expansion Unit or
terminating connector disconnected.
(2) Check the connecting cable to the
Expansion Unit and the connection of
the terminating connector. 69
Abnormal supply
voltage to
Expansion Unit
(3) Voltage fluctuation caused by
insufficient supply voltage current
capacity.
(3) Change to a power supply with a
greater current capacity.
---
(4) Supply voltage outside the rated value.
(4) Connect to a supply voltage of 24 VDC
-15% to +10%.
---
Failure in internal
circuit
(5) Failure in internal circuit for T31, T32
and T33.
(5) Replace the G9SX. ---
(6) Expansion Unit relay contact or internal
circuit failed.
(6) Replace the Expansion Unit. ---