1. Troubleshooting
G9SX
USER'S GUIDE
87
Ap
pe
nd
ix
When indicators other than the ERR indicator blink, check and take necessary actions referring to the following table.
ERR
indicator
Other
indicator
Fault
Expected causes of the fault
Check points and measures to take
Page
Lights
ED blinks
Fault involved with
OFF-delayed safety
outputs
(1) Safety OFF-delayed outputs short
circuited.
(1) Check the wiring to S44 and S54.
---
(2) Wiring to the OFF-delayed safety
contact outputs and 24 V, 0 V, or
another I/O terminal short circuited.
(2) Check the wiring to S44 and S54.
---
Incorrect set values
for OFF-delay time
(3) Settings of two OFF-delay time preset
switches are not the same.
(3) Confirm the set values of the OFF-
delay time preset switches on the front
and back of the Unit.
65
Abnormal ambient
temperature
(4) The environment exceeds the
permissible ambient operating
temperature.
(4) Check the ambient temperature and
spacing around the G9SX.
77
Failure in internal
circuit
(5) Failure in internal circuit for S44 and
S54.
(5) Replace the G9SX.
---
(6) OFF-delay time preset switch failed.
(6) Replace the G9SX.
---
AND blinks
Fault involved with
logical AND
connection input
(1) Logical AND connection input and 24 V,
0 V, or another I/O terminal short
circuited.
(1) Check the wiring to T41.
---
(2) Maximum cable length exceeded.
(2) Make sure that the wiring length for the
T41 and T42 terminals is less than 100 m.
---
(3) Maximum number of connected Units
exceeded.
(3) Check the logical AND connection for
the G9SX.
59
Incorrect setting for
logical AND
connection setting
switch
(4) The logical AND connection preset
switch is set to OFF.
(4) When using a logical AND connection,
set the logical AND connection preset
switch to AND.
57
Fault in internal
circuit
(5) Failure in internal circuit for T41 and
T42.
(5) Replace the G9SX.
---
(6) The logical AND connection preset
switch failed.
(6) Replace the G9SX.
---
All indicators
except PWR
blink
Supply voltage
outside the rated
value
(1) Supply voltage outside the rated value.
(1) Connect to a supply voltage of 24 VDC
-15% to +10%.
---
(2) Voltage fluctuation caused by
insufficient supply voltage current
capacity.
(2) Change to a power supply with a
greater current capacity.
---
ERR
indicator
Other
indicator
Fault
Expected causes of the fault
Check points and measures to take
Page
Off
T1
Blinks
Mismatch between
input 1 and input 2
The input status between safety input 1
and safety input 2 is different due to a
contact failure or short circuit of a safety
input device or a wiring fault.
Check the wiring from safety input devices
to the G9SX. Or check the input sequence
of safety input devices.
After removing the fault, turn both safety
input 1 and 2 to the OFF state.
---
T2
Summary of Contents for G9SX Series
Page 50: ...MEMO 50 G9SX USER S GUIDE ...
Page 95: ...G9SX USER S GUIDE 95 Precautions Precautions ...
Page 101: ...MEMO G9SX USER S GUIDE 101 ...
Page 102: ...MEMO 102 G9SX USER S GUIDE ...
