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NRS 1-50 For TWO electrodes - USA - Installation & Operating Manual -
850694-00
Contents
Content of this Manual ......................................................................................................................... 4
Scope of supply, product package ....................................................................................................... 4
How to use this Manual ........................................................................................................................ 5
Illustrations and symbols used ............................................................................................................ 5
Hazard symbols in this Manual ............................................................................................................ 5
Types of warning .................................................................................................................................. 6
Specialist terms, abbreviations ........................................................................................................... 7
Usage for the intended purpose ........................................................................................................... 8
Applicable directives and standards
.............................................................................................. 8
Improper use ........................................................................................................................................ 8
Basic safety information ...................................................................................................................... 9
Required personnel qualifications ..................................................................................................... 10
Notes on product liability ................................................................................................................... 10
Function .............................................................................................................................................. 11
Technical data .................................................................................................................................... 12
Rating plate, identification ................................................................................................................. 13
Factory default settings ..................................................................................................................... 14
Dimensions of the NRS 1-50 .............................................................................................................. 15
Important notes .................................................................................................................................. 16
Safety information ......................................................................................................................... 16
Preparing for installation ................................................................................................................... 17
Installation .......................................................................................................................................... 18
Electrical connection .......................................................................................................................... 19
Supply voltage ............................................................................................................................... 19
Connecting the level electrode ....................................................................................................... 19
Connecting the safety circuit .......................................................................................................... 19
Connecting the signal output ......................................................................................................... 20
Wiring diagram of level switch NRS 1-50 ....................................................................................... 21
Wiring diagram for Class C protection against second faults with automatic prevention of
interlock deactivation in the event of malfunction........................................................................... 22
Example switching combinations ................................................................................................... 23
Key to example switching combinations......................................................................................... 24
