Weidmüller EM122-RTU-2P - Table of Contents

Contents
General ................................................................................................................................................................................................... 5
Copyright ..................................................................................................................................................................................... 5
Trademarks .................................................................................................................................................................................. 5
Disclaimer .................................................................................................................................................................................... 5
Meaning of the symbols ......................................................................................................................................................... 5
Application notes ...................................................................................................................................................................... 6
About these operating instructions .................................................................................................................................... 7
Incoming goods inspection ............................................................................................................................................................ 8
Scope of delivery ....................................................................................................................................................................... 8
Product description ........................................................................................................................................................................... 9
Intended use ............................................................................................................................................................................... 9
Specifications ............................................................................................................................................................................ 10
Operating concept.................................................................................................................................................................. 12
EM configuration tools .......................................................................................................................................................... 13
Connection options ................................................................................................................................................................ 13
Assembly ............................................................................................................................................................................................. 14
Installation location ................................................................................................................................................................ 14
Power supply ............................................................................................................................................................................ 14
Voltage and current measurement inputs ..................................................................................................................... 15
Direction of the current......................................................................................................................................................... 16
RS485 interface ........................................................................................................................................................................ 16
Terminating resistors .................................................................................................................................................... 17
Shielding ........................................................................................................................................................................... 17
Cable type ........................................................................................................................................................................ 18
Maximum cable length ................................................................................................................................................ 18
Bus structure .................................................................................................................................................................... 18
Pulse Output ............................................................................................................................................................................. 20
Examples of electrical connections ................................................................................................................................... 21
Configuration and display ............................................................................................................................................................. 22
Self-check after power on.................................................................................................................................................... 22
Button functions ...................................................................................................................................................................... 23
Overview of measured value displays .............................................................................................................................. 24
Voltage and Current ..................................................................................................................................................... 24
Frequency and Power Factor and Demand .......................................................................................................... 25
Power ................................................................................................................................................................................. 26
Energy Measurement ................................................................................................................................................... 27
Configuration menu ............................................................................................................................................................... 28
Set-up Mode ............................................................................................................................................................................ 28
Set-up Entry Methods ........................................................................................................................................................... 29
Menu Option Selection ................................................................................................................................................ 29