Can anyone help me indentify the function of each input wire for the EPM-3D3100VB and EPM-3D100AG DC voltage and current meters?
Red
Black
Green
Blue
Is there a data sheet to which I can refer?
Jim
DC voltage and current panel Meter wiring
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Jim Hicks
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Tech_Marco
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Re: DC voltage and current panel Meter wiring
Red: +5V
Black: Ground
Green: +Input
Blue: Ground
(note: please do not count on the color shows on the picture. Always double check the print mark on the pcb)
For a current meter, an isolated power module is required as it need an independent power sources to work with. Volt meter is ok but it may need a 7805 power module(stepping down from 12V to 5V) if you plan to use in a car. Common ground (7805) is ok for the volt meter but not good for the current meter.
See the digital meter connection diagram from the manual where we did include this mini 3 digit meter
Black: Ground
Green: +Input
Blue: Ground
(note: please do not count on the color shows on the picture. Always double check the print mark on the pcb)
For a current meter, an isolated power module is required as it need an independent power sources to work with. Volt meter is ok but it may need a 7805 power module(stepping down from 12V to 5V) if you plan to use in a car. Common ground (7805) is ok for the volt meter but not good for the current meter.
See the digital meter connection diagram from the manual where we did include this mini 3 digit meter
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