Poe injector for ptz issues?

[Mark1982]

DS-2DE7A432IW-AEB(T5) can any body help I’m trying to power this ptz camera with a 90w injector but camera randomly re-starts I’m trying to avoid power supply route as there is no mains power available, can anyone recommend a switch or injector that will do the job?

 

[Phil]

90 Watts should be more than enough.
The camera's datasheet says it only needs 42W: