You say a CMR can not be used to detect a stalled motor. Both flameport and I are telling you that you are wrong.
I will stop telling you that you are wrong when you stop posting wrong information.
LED to monitor motor
- Thread starter Marnhullman
- Start date
You say a CMR can not be used to detect a stalled motor. Both flameport and I are telling you that you are wrong.
I will stop telling you that you are wrong when you stop posting wrong information.
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I did NOT say that at all. I said that a stalled motor would still draw current.
I did not say that at all. I said a stalled motor would still draw current. Flameport agreed with me. Only you said I was wrong.
I said you can use a CMR to see if the pump is running. You said no you can’t.
Once I have proved you wrong yet again, you revert to lying yet again.
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NO I DID NOT SAY THAT. YOU ARE LYING.
I said a stalled motor will still draw current.
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Yes you did in post 3
I quoted you saying exactly that in the post above where you now deny it.
Hm, so I did. The argument though seem to relate about my statement a stalled motor still draws current.
No, you didn't "just state that". That statement of yours came after you responded to RF's statement:
... with
... which, as you've now been told many times, simply is not correct.
... however, as I've recently written, I would personally favour monitoring water flow (or, at least pressure), since satisfactory electrical behaviour of the pump's motor does not guarantee that satisfactory pumping of water [to the right place(s)] is happening.
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When you stop being wrong we will stop telling you you are wrong.
It's quite simple really, just offer advice you actually know something about. Then there will be no arguements, no criticism, no 'snide comments' and above all no confusion for the OP and they will not be frightened off.
Well, you were wrong again.
As I see it, the problem was probably that you didn't know what a CMR was (when Flameport referred to it implicitly, and RF explicitly) but, from that position of lack of knowledge, you for some reason made a completely incorrect assertion about the use of a CMR. You might at least have looked up what such a device was before making (incorrect) assertions about them.
Calm down
Determining the thresholds for normal running current and for stalled current can be difficult. for some types of motor it is near impossible as stalled current can be very similar to running current.
If monitoring the supply current is the only access to the system then phase angle detection ( current angle against voltage angle ) could be more reliable.
As others have said flow switches and similar ways of monitoring the motor's
Been there, one bodge ( sorry quick fix ) was a microphone and a sound level alarm.
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