Inovance AC700 Series - Maintenance and Troubleshooting; Periodical Maintenance and Inspection

Maintenance and Troubleshooting
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7 Maintenance and Troubleshooting
7.1 Periodical Maintenance and Inspection
Periodical inspection is required because the parts of the controller may deteriorate due to
environmental conditions. The interval is recommended to be 6 to 12 months, and can be shortened
according to the environment conditions. Take measures if any item fails the inspection.
No. Item
Description Criteria
Measure
1
Power supply
Measure the power
terminal block and check
that the voltage change is
within the allowed range.
24 VDC (−15% to
+20%)
Use a multimeter to measure
the terminals, and control
the supply voltage within the
allowable range.
2 Environment
Check that the ambient
temperature is suitable
(when the controller is in
a cabinet, the
temperature in the
cabinet is the ambient
temperature).
−5°C to 55°C
Use a thermometer to
measure the ambient
temperature and control the
ambient temperature within
0°C to 55°C.
Check that the ambient
humidity is suitable (when
the controller is in a
cabinet, the humidity in
the cabinet is the ambient
humidity).
10% to 90% RH (no
condensation)
Use a hygrometer to measure
the ambient humidity control
the ambient humidity within
10% to 90% RH. The
temperature changes
drastically, so check for
condensation.
Direct sunlight
Not allowed Provide a shelter.
Dust, dirt, salt, and iron
filings
Not allowed
Remove them and provide a
shelter.
Droplets of water, oil, and
chemicals
Not allowed
Remove them and provide a
shelter.
Corrosive gas or
flammable gas
Not allowed
Use an odor or gas sensor for
detection.
Vibration or shock to the
controller
The vibration and
shock resistance
should meet relevant
requirements.
Install cushioning materials
for vibration and shock
resistance.
Interference sources Not allowed
Keep the controller away
from any interference
sources or take shielding
measures.