INDUSTRIAL MONITORING INSTRUMENTATION DIVISION
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If the box did not ship from factory with factory-installed connections ports, drill/punch the necessary holes in the
bottom of box for the input and output cabling. Be very careful when drilling/punching holes in the box as to not
damage the internal metal, terminal strips and printed circuit boards. Also, take every possible precaution to
prevent water entrainment into the box.
Grounding the Enclosure
To ground the internal shielding system (ground planes on PC Board, mounting panel and switch enclosure), an
external earth ground wire must be connected. To do this, the bottom, right, inner-mounting hole has a double
nut included. Unscrew the nut and insert ground wire between the washers and screw nut tightly down again.
This will earth ground all the shields and the inner metal pieces. This will not ground the (-) input of the vibration
sensors, since they are isolated from the shield.
Input Wiring
Sensor cables should be routed through connection ports
and then connected to their respective channel’s
terminal strip per the diagram below. If connection ports are cord grips, cord grips should then be tightened to
maintain the enclosure’s ingress protection rating.
