Emc Grounding, Shielding, And Noise Protection; Emc Grounding Method - Ametek AMEVision User Manual

EMC Grounding, Shielding, and Noise Protection

You must use twisted-pair cable in rigid metal conduit or use twisted pair cable
with an overall braided shield. All cable shields or conduits connecting to the
control unit must be chassis grounded.

EMC Grounding Method

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Figure 1-2.
Direct shield grounding
methods.
1-4 | Thermox ® AMEVision Display User Interface
For EMC purposes, under no circumstances should you leave cable
shields disconnected at one end or both ends of the cable (sensor or
control unit or other device).
Shield Ring Method
Connect all shields for that conduit entry (other than power) to a supplied
shield terminal ring (see Figure 1-2). This shield ring is a stainless steel ring
with a metal tab. Place the shield ring under the conduit nut. Crimp the
shields from all cables for that conduit entry to a 1/4" female quick discon-
nect, then push it onto the tab that sticks out of the conduit shield ring.
Keep shields as short as possible.
Ground Stud Method
Connect all cable shields for that conduit entry to the grounding stud
closest to that conduit entry hole.
SHIELD RING METHOD
Conduit Housing
GROUND STUD METHOD
Conduit Housing
Shield Terminal Ring
Quick Disconnet (1/4")
Cable Shield(s)
Max. Length 1 inch
Capacitor
Conduit Nut
Cable Shield(s)
Max. Length 2 inches
Capacitor
Conduit Nut
Nut
Washer
Ring Terminal
PN 9000-165-VE, Rev P