Daily Inspections - Mitsubishi Electric A173UHCPU User Manual

5. INSPECTION AND MAINTENANCE

5.2 Daily Inspections

No. Item
1 Base unit installation
2 I/O(and other) module mounting
3 Connections
POWER
indicator
RUN indicator
ERROR
indicator
4 Indicators
INPUT indicator
OUTPUT
indicator
The inspections listed in the table below should be conducted every day.
Table 5.2 Daily Inspections
Description
All screws tight and covers in
position.
Modules correctly mounted in
base unit.
Terminal screws tight
No loose screws
Tighten loose screws
Check that indicator lights
Lights in RUN status
Lights when an error occurs.
Check the indicator lighting
status.
Check the indicator lighting
status.
Evaluation Standard
Must be firmly installed.
Fully mounted and screws
tightened.
Spacing between solderless
terminals.
Correct spacing is maintained.
Adjust spacing.
Indicator lights
(otherwise abnormal)
Indicator lights
(otherwise abnormal)
Indicator not lit
(otherwise error)
Indicator lights when input is ON
and goes out when input is OFF
(otherwise abnormal).
Indicator lights when output is ON
and goes out when output is OFF
(otherwise abnormal).
5 − 3
Remedy
Tighten loose
screws.
Tighten loose
screws.
Extension cable
connectors
Connectors fully
tightened
Tighten connector
screws
See Section
5.4.1 (2)
See Section
5.4.1 (3) (4)
See Section
5.4.1 (5) (6)
See Section
5.4.1 (7)
See Section
5.4.1 (7)