Chapter 4 Maintenance
4.1 Daily Inspection
The following items should be inspected daily in order to maintain normal system operation and prevent unnecessary trouble from occurring.
Item |
| Inspection Description |
|
| Action |
|
Check the LED in |
| POWER (green): On when 5V |
|
| Inspect the power supply |
|
front of the power |
| power supply is normal |
|
| related items under "Periodic |
|
module. |
|
|
|
| Inspection" below. |
|
Check the LED at the |
| RUN (green): ON when |
|
| See below |
|
front of the C2 |
| program is running normally. |
|
|
|
|
module. |
|
|
|
|
|
|
Check the LED of the |
| When external input signal is |
|
| • Check that the input voltage |
|
input module. |
| ON, the corresponding LED is |
|
| is within specification. |
|
(Digital input) |
| ON. |
|
| • Check that the input |
|
|
|
|
|
| terminal is secure. |
|
|
|
|
|
| • Check that the module is |
|
|
|
|
|
| secured. |
|
Check the LED of the |
| When output is ON, |
|
| • Check that the external load |
|
output module. |
| corresponding LED is ON and |
|
| voltage is within |
|
(Digital output) |
| corresponding external load is |
|
| specification. |
|
|
| active. |
|
| • Check the internal fuse. |
|
|
| LEDs indicating blown fuse |
|
| • Check that the output |
|
|
|
|
| terminal is secure. |
| |
|
| and external power failure |
|
|
| |
|
|
|
| • Check that the module is |
| |
|
| (FL, FH, or F) are OFF. |
|
|
| |
|
|
|
| secured. |
| |
|
|
|
|
|
|
Action
• When the C3 module LED status is abnormal
The application program may be at fault if the error is not corrected after performing the following. Check the application program once more.
(1)Restarting the C2 module.
(2)Replacing the C2 module.
6F8C1111 | 31 |
