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9.2 Daily Checks
CAUTION
1. Pay special attention during the maintenance work to minimize the risk of electrical
shock.
2. Turn off power immediately if the V200 CPU or related equipment is emitting smoke
or burning. Operation under such situation can cause fire or electrical shock.
To maintain the system and to prevent troubles, check the following items on daily basis.
Item
Check
Corrective measures
Status LEDs
PWR
(power)
Lit when internal 3.3 V
is normal.
If the LEDs are not normal, see
Troubleshooting.
RUN Lit when operating
normally.
F
L
T
(fault)
Not lit when operating
normally.
Mode control
switch
Check that the mode control switch is
in
R (RUN) side. Normal operation is
performed when this switch is in R
(RUN) side.
Turn this switch to R (RUN) side.
Input LEDs
Lit when the corresponding input is ON.
•
Check that the input terminal screw
is not loose.
•
Check that the input terminal block is
not loose.
•
Check that the input voltage is within
the specified range.
Output LEDs
Lit when the output is ON and the
corresponding load should operate.
•
Check that the output terminal
screw is not loose.
•
Check that the output terminal
block is not loose.
•
Check that the output voltage is
within the specified range.