Rockwell-automation 1440-TB-H XM-947 Dynamic Vibration Terminal Base Instrukcja Użytkownika Pobierz pdf (Strona 10)

10 XM-947 Dynamic Vibration Terminal Base

Publication GMSI10-IN027A-EN-P - May 2010

DIN Rail Grounding Block

24V Common Grounding

24V to the XM module must be grounded. When two or more power supplies

power the XM system, ground the 24 V Commons at a single point, such as

the ground bus bar.

IMPORTANT

If it is not possible or practical to ground the -24Vdc supply, then it is

possible for the system to be installed and operate ungrounded. However, if

installed ungrounded then the system must not be connected to a ground

through any other circuit unless that circuit is isolated externally.

Connecting a floating system to a non-isolated ground could result in

damage to the XM module(s) and/or any connected device. Also, operating

the system without a ground may result in the system not performing to the

published specifications regards measurement accuracy and

communications speed, distance or reliability.

IMPORTANT

The 24V Common and Signal Common terminals are internally connected.

They are isolated from the Chassis terminals unless they are connected to

ground as described in this manual. See Wiring on

page 14 for terminal

assignments.

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Rockwell-automation 1440-TB-H XM-947 Dynamic Vibration Terminal Base Instrukcja Użytkownika Strona 10