35
G9SX-GS
When indicators other than the ERR indicator blink, check and take necessary actions referring to the following table.
(Expansion Unit)
Lights
AND blinks
Fault involved with logical
AND connection input
1) Failure involving the wiring of the logical
AND connection input
2) Incorrect setting for the logical AND
connection input
3) Failure of the circuit of the logical AND
connection input
1) Check the wiring to T41 and T42.
Note: Make sure that the wiring length for the
T41, T42 terminal is less than 100 meters.
Note:
Make sure that the logical AND connection
signal is branched for less than 4 units.
2) Confirm the set value of the logical AND
connection preset switch.
3) Replace with a new product.
UA blinks
Fault involved with the
external indicator output
(UA)
1) Failure involving the wiring of the
external indicator output
2) Failure involving the wiring of the
external indicator diagnosis switching
input
3) Failure of the circuit of the external
indicator output
4) Failure of the external indicator
1) Check the wiring to UA.
2) Check the wiring to Y3.
Note:
When no indicator is connected, or an LED
indicator is connected, connect Y3 to 24 V.
3) Replace with a new product.
4) Replace the connected external indicator.
UB blinks
Fault involved with the
external indicator output
(UB)
1) Failure involving the wiring of the
external indicator output
2) Failure involving the wiring of the
external indicator diagnosis switching
input
3) Failure of the circuit of the external
indicator output
4) Failure of the external indicator
1) Check the wiring to UB.
2) Check the wiring to Y4.
Note: When no indicator is connected, or an
LED indicator is connected, connect Y4 to
24 V.
3) Replace with a new product.
4) Replace the connected external indicator.
UA and UB
alternately
blink
Fault involved with the
Switching Function
1) Failure involving the setting of the
Switching Function setting switch
2) Failure involving the wiring of the mode
selector input
3) Failure involving the circuit of the mode
selector input
4) Failure involving the mode selector
switching time
1) Check the setting of the Switching Function
setting switch.
2) Check the wiring to M1 and M2.
3) Replace with a new product.
4) Check the signal switching time of the mode
selector input (M1, M2).
All
indicators
except
PWR blink
Supply voltage outside the
rated value
1) Supply voltage outside the rated value 1) Check the supply voltage to the Units.
ERR
indicator
Other
indicators
Fault Expected cause of the fault Check points and measures to take
Off
T1
Blink
Safety input A mismatch
The input status between safety input A
channel 1 and safety input A channel 2 is
different, due to contact failure or a short
circuit of safety input device(s) or a wiring
fault.
Check the wiring from safety input devices to the
G9SX-GS@. Or check the input sequence of
safety input devices. After removing the fault,
turn both safety input A channels 1 and 2 to the
OFF state.
T2
T6
Blink
Safety input B mismatch
The input status between safety input B
channel 1 and safety input B channel 2 is
different, due to contact failure or a short
circuit of safety input device(s) or a wiring
fault.
Check the wiring from safety input devices to the
G9SX-GS@. Or check the input sequence of
safety input devices. After removing the fault,
turn both safety input B channels 1 and 2 to the
OFF state.
T7
ERR
indicator
Other
indicators
Fault Expected cause of the faults Check points and measures to take
Lights
---
Fault involved with safety
relay outputs of Expansion
Units
1) Welding of relay contacts
2) Failure of the internal circuit
Replace with a new product.
ERR
indicator
Other
indicator
Fault Expected causes of the fault Check points and measures to take
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