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Advant
®
Controller 450 User’s Guide
Chapter 2 Installation
2-8
3BSE 002 415R701 Rev A
2.1.5 Grounding
Grounding in General
The signal processing electronics in Advant OCS, as well as all interference suppression for
external signals, are normally directly grounded to chassis and plant earth.
The plant earth potential must be stable and well defined, even in the event of ground fault in
low- and high-voltage equipment or lightning stroke. This claim for a grounding system is
common to the high-voltage equipment. The earth line joining the grounding systems should be
≥
35 mm
2
Cu.
Protective Earth
Always provide Advant OCS cabinets supplied with 230 V a.c. with a protective earth.
Grounding of Signals and Voltage Supply
For minimum interference and maximum accuracy, it is normally most effective to ground the
signals from transducers directly in the grounding bar in the Advant Controller. For freedom
from interference, it is also advantageous to ground supply voltages for transducers, sensing
voltage for contacts, load supply voltage, and so on.
You may have to deviate from these two basic rules in order to adapt to other requirements such
as measurement techniques or safety regulations. In such cases, you must ensure that,
for example, differential inputs for analog input signals are used or that digital inputs and
outputs are divided into groups in the connection unit, with the possibility of supply voltage
distribution and earthing in other equipment.
A consequence of requiring local grounding of a signal at the transducer location may be a
requirement for a completely individual voltage supply to each transducer. This normally
Figure 2-4. Grounding of Electronic Equipment
M
Earth line
≥
35 mm
2
Cabinetry
or equal
Protective
earth
Summary of Contents for Advant Controller 450
Page 1: ...Advant OCS with Master software GYDQW RQWUROOHU User s Guide 3BSE 002 415R701 Rev A ...
Page 26: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xvi ...
Page 30: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xx ...
Page 488: ... GYDQW RQWUROOHU 8VHU V XLGH SSHQGL DUGZDUH 0RGXOHV A 48 3BSE 002 415R701 Rev A ...
Page 508: ...Advant Controller 450 User s Guide Appendix D Item Designations D 12 3BSE 002 415R701 Rev A ...
Page 518: ...Advant Controller 450 User s Guide Appendix F Load Calculation F 4 3BSE 002 415R701 Rev A ...
Page 522: ...Advant Controller 450 User s Guide Appendix G Memory Calculation G 4 3BSE 002 415R701 Rev A ...
Page 528: ...Advant Controller 450 User s Guide Appendix H Halt Codes H 6 3BSE 002 415R701 Rev A ...
Page 562: ...Advant Controller 450 User s Guide Index iv 3BSE 002 415R701 Rev A ...
Page 563: ......
Page 564: ...3BSE 002 415R701 Rev A March 2000 ...