Chapter 10. Maintenance
10-1
Chapter 10. Maintenance
Be sure to perform daily and periodic maintenance and inspection in order to maintain the PLC in the best conditions.
10.1 Maintenance and Inspection
The internal circuit of the XGT Panel mainly consist of semiconductor devices and its service life is semi-permanent. However,
periodic inspection is requested for ambient environment may cause damage to the devices. When inspecting one or two times
per six months, check the following items.
Check Items Judgment Countermeasure
Temperature
-20 ~ 60°C
Humidity 5 ~ 85%RH
Adjust the operating temperature and humidity with the
defined range.
Ambient
environment
Vibration No vibration
Use vibration resisting rubber or the vibration prevention
method.
Shaking of the XGT Panel No shaking allowed Fix the XGT Panel
Screws connecting conditions No loose allowed Retighten terminal screws.
Change rate of input voltage
− 15% to 10%
Hold it with the allowable range.
Spare parts
Check the number of
Spare parts and their
Store conditions
Cover the shortage and improve the conditions.
10.2 Daily Inspection
The following table shows the inspection and items which are to be checked daily.
Check Items Check Points Judgment Countermeasure
Terminal block
connecting conditions
Check for loose mounting screws Screws should not be loose Retighten Screws
Communication
connector connecting
conditions
Check the connector falling Connectors should be fixed
Retighten Screws
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