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-25-
No.EX##-OMP0025
Fault No.12
Problem
Possible cause
Investigation method
Countermeasures
Defective connection
between the SI unit
and input block
Check that the screws which connect the SI
unit and input block are not loose.
Tighten the screws while
holding the SI unit and the
input block so that there is
no gap between them.
The screws should be
tightened with the specified
tightening torque. (0.6 Nm)
Liquid such as water
has entered the
product
Confirm that all unused connectors of the
input block have a waterproof cap fitted.
If liquid has entered the
product, replace the input
block.
Input block
PWR LED is
OFF
Input block fault
Check that the input block is operating
correctly.
Replace the input block.
Fault No.13
Problem
Possible cause
Investigation method
Countermeasures
Defective connection
between the SI unit
and input block
Check that the screws which connect the SI
unit and input block are not loose.
Tighten the screws while
holding the SI unit and the
input block so that there is
no gap between them.
The screws should be
tightened with the specified
tightening torque. (0.6 Nm)
Polarity of the input
block and input device
are not compatible
Check that the polarity of the input block and
the input device are compatible.
Use an input device
compatible with the polarity
of the input block.
Tighten the cable
connection. (Replace the
cable if it is broken.)
Defective connection
between the input
block and input device
Check the input device connection and wiring
(pin layout) and check for broken wires.
Rectify the wiring of the
input device cable.
Input block
LED does
not turn ON
Input block fault
Check that the input block is operating
correctly.
Replace the input block and
check the operation.
Fault No.14
Problem
Possible cause
Investigation method
Countermeasures
Defective connection
between the SI unit
and input block
Check that the screws which connect the SI
unit and input block are not loose.
Tighten the screws while
holding the SI unit and the
input block so that there is
no gap between them.
The screws should be
tightened with the specified
tightening torque. (0.6 Nm)
Input block
LED and the
input data do
not match
Fault of the SI unit or
input block
Check that the SI unit and input block are
operating correctly. Replace the SI unit or
input block and check the operation.
Replace the SI unit or input
block and check the
operation.