LS ELECTRIC XGL-PSEA, Руководство пользователя

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Chapter 7 Maintenance and Repair
7-1
Chapter 7 Maintenance and Repair
To maintain the PLC in optimal status, please carry out daily check and regular check.
7.1 Repair and Check
I/O module is usually composed of semiconductor microelectronic device and the life is semi- permanent. As the microelectronic
device may occur the error caused by the ambient environment, it is required to check it periodically. The following are items to be
checked 1~2 times every 6 months.
Check items Judgment basis Action
Ambient
environ-ment
Temperature 0 ~ +55

C
Control the use temperature and the use humidity.
Humidity 5 ~ 95%RH
Vibration No vibration Use the dust-proof rubber or take the vibration protection policy.
Shaking of each unit and
module
No shake Make all unit and module not to be shaker
Terminal screw loosened. No loosening Tighten the loosened screw.
Input voltage change rate Within

15%/+10% Maintain the change rate within the allowable range.
Spare parts
Check if the quantity
of spare part and the
preservation status is
good.
Make up insufficient and improve the preservation status.
7.2 Daily Check
Daily check point for Pnet remote I/F module is as follows.
1)
Daily check for Profibus-DP module
Checking items Description Judgment basis Action
Cable connection status Cable loosening No loosening Tighten the cable
Module connection status Screw loosening No loosening Tighten the module screw.
Indication LED
RUN LED Check
‘ON’
Module operates normally
(normal operation of system OS)
Refer to Chapter 3.
P-N LED Check
‘ON’
Power and communication normal Refer to Chapter 3.
STATUS LED Check
‘ON’
Expansion I/O module information
match
Refer to Chapter 3.
ERR LED Check
‘ON’
Module detached, invalid module
installed, Out of I/O data range,
I/O parameter error
Refer to Chapter 3.