Maintenance and Troubleshooting
-45-
No. Item
Description Criteria
Measure
3
Installation and
wiring
Check that cable
connectors are fully
inserted and locked.
Looseness is not
allowed.
Fully insert the connector
and lock it with screws.
Check that external wiring
screws are securely
fastened.
Looseness is not
allowed.
Use a Phillips screwdriver to
tighten the screws.
Check that external wiring
terminals are properly
distanced.
Ensure a proper
distance between
terminals.
Check the distance visually
and correct any improper
distance.
Check for broken external
cables.
Broken external cables
are not allowed.
Check cables visually and
replace broken cables (if
any).
4
Real-time clock
battery (button
battery)
Check that the shelf life or
service life does not
expire.
No "battery voltage
low" alarm is displayed
on the controller.
The shelf life of the battery at
25°C is 5 years, and its service
life is generally 0.75 to 5
years, depending on the
model and ambient
temperature. If the service
life expires, replace the
battery whether it can run
normally or not. For the
replacement method, see
“
7.2 Installation and
Removal of the Battery
”
on page 45
7.2 Installation and Removal of the Battery
Precautions
● After replacing the battery, you need to manually start the controller.
● Before installing or removing the battery, power off the controller. Live working is prohibited.
● When installing the battery, check the label at the bottom of the battery to identify the battery's
positive and negative poles. Make sure that the battery is located on the right of the battery handle
to facilitate the next removal.
● After replacing the battery, power on the controller and check if the controller reports a battery
error. If such an error is reported, check whether the battery is installed correctly.
● If the controller is powered on without reporting any error, recalibrate the system clock.
● Dispose of the replaced battery properly to avoid environmental pollution and physical injury.
Installation and removal of the battery
1. Open the battery cover clockwise.
2. Pull the battery handle outward, and slowly pull out the battery in the direction perpendicular to the
controller.
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