Max Machinery 276-5XX SERIES 4-20MA TRANSMITTERS - Manual (Page 6)

( 6 ) 276-515-350 © 2006 Max Machinery, Inc.
INSTALLATION
—Grounding / Typical Wiring Schematics
Grounding Jumpers: Two options are available for connecting the minus output to the case
ground. These are shown schematically, below, in a typical wiring diagram.
As supplied by the factory, a jumper is installed in the “filter” position, which capacitively
couples minus and ground. This arrangement reduces possible electrical noise problems.
The “ground” jumper would connect minus and case ground directly together, and is supplied
in an open condition. Some readout instruments do not have zero volts at the minus terminal,
and a direct ground connection would not be advisable.
In a typical installation, the Transmitter case is grounded through the plumbing. An alternative
is to make the ground connection at the “case” terminal on the printed circuit board.
Discontinued