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6QBI User’s Guide
UG-1091
18
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Earth Grounding
Copyright © 2021 QEI
10 Earth Grounding
10.1 Earth Grounding Method
WARNING:
The 6QBI should be connected to earth ground through quick-connect
tab J20, or by connecting the top left swage-on PCB mounting hole to a suitable
chassis ground. Failure to do so will render the transient protection circuits on the
6QBI RS-422 ports inoperative, and may result in damage to the board. The J20
grounding tab is also located near the top left swage-on mounting hole.
11 Mechanical
Dimensions are 11.675” L x 4.25” W x 1.5”D. Mounting holes are for 6-32 screws at the four corners of the
board. Top left mounting hole is also chassis earth ground, or use Tab J20 for earth ground.
RS-422
SERIAL
FIBER
OPTION SW.
MAINT.
6AIP1
6SIP1
6COP1
6-32 Clearance