Chapter 10. Maintenance
10-2
10.3 Periodic Inspection
Check the following items once or twice every six months, and perform the needed corrective actions.
Check Items Checking Methods Judgment
Ambient
environment
temperature
-
. Measure with thermometer
and hygrometer
-. measure corrosive gas
0 ~ 55 °C
Adjust to general
standard
(Internal environmental
standard of control
section)
Ambient Humidity 5 ~ 95%RH
Ambient pollution
level
corrosive gases
PLC
Conditions
Ingress
The module should be move
the unit
mounted securely.
Retighten screws
material
Visual check No dust or foreign material
Connecting
conditions
screws
Re-tighten screws Screws should not be loose Retighten
terminals
Visual check Proper clearance Correct
Loose connectors Visual check
Connectors should not be
loose.
mounting
screws
Line voltage check
input terminals
AC100~240V:AC85~ 264V
DC12/24V:DC9.5 ~ 30V
Change supply power