-22-
No.EX##-OMK0004-A
Trouble No.3
Trouble
Possible cause
Investigation method of cause
Remedy
Check that the output load cable is not
broken, and that the connection between
the output load and connector has not
loosened.
Review the connecting
condition of the output load.
(If the cable is broken,
replace it with a new one.)
Incorrect connection
of the load with the
Output block
Check if the specifications of the SI unit
match those of the output load (+ common,
- common).
Use - common with the
output load for the PNP
output.
Inconsistent polarity
between the solenoid
valve
(VQC1000/2000) and
output block
Check if the specifications of the SI unit
match those of the solenoid valve and
output block (+ common, - common).
Use - common with the
solenoid valve and Output
block suitable for the PNP
output of the SI unit.
Check the troubleshooting for the solenoid
valve.
Correct the trouble of the
solenoid valve.
Only the
solenoid
valve/Output
block LEDs do
not light up
Failure of the solenoid
valve and/or Output
block
Replace the SI unit with new one and
operate to check the normal operation
recovers.
Replace the SI unit with new
one.
Trouble No.4
Trouble
Possible cause
Investigation method of cause
Remedy
The inputs that
are beyond the
maximum
point number
do not operate.
Inadequate total
number of inputs from
the Input block
connected with the SI
unit
Check if the total number of inputs is 32 or
less.
Eliminate extra unused
inputs from the manifold to
ensure the number of inputs
is 32 or less.