pls how can I use npn sensor as a zero speed monitor on a rotary machine
pls how can I use npn sensor as a zero speed monitor on a rotary machine
(OP)
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
pls how can I use npn sensor as a zero speed monitor on a rotary machine
|
RE: pls how can I use npn sensor as a zero speed monitor on a rotary machine
Explain to us why you cannot buy an already-engineered speed-monitoring switch and use that instead. There is one type that uses a trigger-wheel (a sprocket often works) and a couple of sensors, there is another type that measures back-EMF at an induction motor. If there is anything remotely safety-related to what you are doing with the outcome of this switch (e.g. using it to hold a guard-locked door closed) you had better be really careful about this.
RE: pls how can I use npn sensor as a zero speed monitor on a rotary machine