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Camera shuts down due to insufficient PoE power
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Camera shuts down due to insufficient PoE power

A camera that works in daylight but then fails later may have a power supply problem. The moment of failure is a clue, not a proven cause. Record which functions are active and which other devices share the same power supply.

Camera shuts down due to insufficient PoE power

Note the exact pattern of outages

Does only the image disappear or does the camera restart? Does this happen around the time of turning on night lighting, heating, or motion detection of a PTZ camera? Create a log with timestamps and compare it with other cameras. This will clearly indicate whether the malfunction affects one port or the shared power supply.

Compare maximum consumption with the power budget

Use the camera and switch specifications to assess the possible consumption. Normal daytime consumption may be lower than when additional features are active. Not only count ports, but also check both the port limit and the total budget.

Include the cable route in the investigation

The connection between the power supply and the camera is also part of the assessment. Note the length, interconnections, and any repairs. Purchasing another switch without investigating the wiring path can result in the same complaint. Have the connections checked when the pattern points to a single camera.

Test one change at a time

A technician can use a suitable other power outlet or a controlled test setup to pinpoint the cause. Record what has changed during the test. Do not turn off functions randomly and consider a stable daily pattern afterward as a complete solution to nighttime outages.

Repeat the load where it failed

Check the camera when the original functions are active again. Then check whether the recording continues and whether other cameras remain stable. When proposing to record, ask which power has been assessed and which reserve space for the present setup has been taken into account.

Frequently asked questions

Does the failure during night vision prove that the PoE switch is too weak?

No. It is a useful indication, but the power supply, cable and camera must be examined in detail.

Why does maximum consumption count?

Extra features may require more power than a quiet day image. The power supply setup should match the relevant use.

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