Engineering Documentation

Table Of Contents

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Table of Contents

How to Use This Manual ..................................................................................... 11

Chapter 1 – Wiring Regulations and Specifications ........................................ 13

Regulatory Subjects .............................................................................................. 13

Circuit Classes ....................................................................................... 14

Radio Frequency Transmitter Limitations .............................................. 14

Conduit Sharing—Class 1/Class 2 Separations .................................................... 14

Network Wiring Location Restrictions ................................................................... 15

Parallel Wire Runs ................................................................................. 15

Grounding .............................................................................................................. 16

National Electrical Code Grounding Guidelines Compliance ................ 16

Earth Ground Current Loops .................................................................. 16

Single Earth Ground for AI, DI, and AO Circuits .................................... 17

Equipment Grounding System Requirements ....................................... 17

NEC Article 250 Specifications ......................................................... 17

National Electric Code (NEC) Communications Requirements ............................ 18

Smoke and Flame Characteristics ......................................................... 18

Common Grounding for Communication Circuits .................................. 18

Conduit Fill ............................................................................................................. 20

Cables per Conduit Size – Siemens Industry Recommendation ........... 20

Cables per Conduit Size—NEC Requirements ..................................... 20

General Wiring Guidelines .................................................................................... 22

Controlling Transients ........................................................................................... 23

Network Terminators ............................................................................................. 23

Wire Specification Tables ...................................................................................... 24

Chapter 2 – Network Electrical Systems ........................................................... 27

Dual Port Ethernet Controller Topology Basics ..................................................... 27

Ethernet Communications Wiring .......................................................................... 30

MLN—Workstation to Ethernet Wiring ................................................... 31

ALN—Workstation to Field Panel Ethernet Wiring ................................ 31

Ethernet/IP ALN ..................................................................................... 31

BACnet/IP ALN ...................................................................................... 31

APOGEE Ethernet Microserver (AEM)—Remote ALN .......................... 32

Using Existing Wiring ........................................................................ 32

RS-485 MS/TP Communications .......................................................................... 33

Using Cimetrics Routers on an APOGEE BACnet MS/TP Network ...... 34

Network Wiring Requirements Decision Tree ........................................ 35

3-Wire Interface Nodes .......................................................................... 36

1.5-Pair Network Cable .......................................................................... 36

1.5-pair Cable Specifications ............................................................ 37