need EE help - again
trying to test a pump but am confused as to how to connect it
http://www.thermal-management-testin...r%20pinout.gif pin 1 is +12VDC pin 2 is the tach output which is the -12VDC leg, pin 6 "+12V DC RETURN" ? what is pin 4 ? the text is Hungarian pins 3 and 5 are open (none) = "semmi" ? |
Pin 6 looks to be the ground pin, no idea what pin 4 is. :p
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A quick translator check on pin 4 reveals it says motor (variable) feed, I'm not entirely sure what that means for a pump - maybe it has some sort of speed varying circuitry on-board?
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"semmi" translates to english as "zero" |
nice link, Thanks
guess I need to avoid the variable feed lead |
Hmmm...hun--ga--ri--an pump :D
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The return is indeed the ground. Semmi is not connected.
Comair-Rotron fans have similar connections, FWIW. |
tach AND speed control ?
link ? |
Maybe #4 is a lower speed start winding. My AC tablesaw motor has that, with a capacitor, but the "tacho" is just a centrifugal DP switch. You could google pump control circuits - see what they can do. You're missing the controller.
For sure the best use of speed control in a pump is at startup torque. |
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Digging... |
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Thanks Ben, good info
lots of experimenting to do |
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