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Changes for page 08 Troubleshooting

Last modified by Mora Zhou on 2023/12/22 11:04
From version 3.1
edited by Leo Wei
on 2022/06/11 14:50
Change comment: There is no comment for this version
To version 2.1
edited by Leo Wei
on 2022/06/11 14:46
Change comment: There is no comment for this version

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5 5  The power board supplies power to the above CORE board and light board. When there is a problem with the power board, some signals transmitted to the above board will have problems. Common PLC power failures are as follows:
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7 7  (% class="table-bordered" %)
8 -|=**Number**|=**Failure**|=**Troubleshooting**|=**Solution**
8 +|**Number**|**Failure**|**Troubleshooting**|**Solution**
9 9  |1|The light does not light up when the power is turned on, and the PLC does not respond.|1. It is possible that the 220V connection of the host is wrong, the power supply between the motherboards is not properly connected, or the pin header is damaged and soldered.
10 10  2. Use a multimeter to measure whether there is voltage between the 24V+ of the PLC and COM, if there is no voltage, the power board is faulty;
11 11  3. Use a multimeter to measure whether there are voltages of 24V and 5V at the BD interface on the PLC. If there is voltage, the LED or core board may be damaged; if 24V is normal, but 5V is not, there may be a problem with the DC conversion circuit of the power board；|When it is suspected to be the problem of the power board, user can replace the power board for confirmation.