Rockwell Automation 1797-RPFM ControlNet Ex Modular Repeater Adapter Fiber Repeater Module - Manual (Page 17)

ControlNet Ex Modular Repeater Adapter & Fiber Repeater Module 17
Publication 1797-5.15 - June 2010
Certified Equivalent ControlNet Ex System Diagram Items
You may use these items as equivalents for the items shown on the system
diagram.
Certification Specific ControlNet Ex System Diagrams
The following pages include certification specific ControlNet Ex system
diagrams and notes pertaining to these diagrams. Select either CENELEC,
UL, C-UL, or FM and follow the requirements of that diagram as you
configure and install your system.
System Diagram Name Catalog Number Source
1797-RPA 1797-RPA Allen-Bradley
1797-RPFM 1797-RPFM Allen-Bradley
1797-ACNR15 1797-ACNR15 Allen-Bradley
Coax Trunk Cable (1) 1786-RG6 Allen-Bradley
3092A (2) Belden Wire & Cable Co.
3092A with blue jacket Belden Wire & Cable Co.
ControlNet Ex Tap 1797-TPx Allen-Bradley
CNet Ex Trk Trm 1797-XT Allen-Bradley
CNet Ex Tap Trm 1797-TCAP Allen-Bradley
1 In addition to these cable types, the following specification can be followed to allow additional
types:

Cable Impedance = 75  + 3 
Cable Capacitance = <5.94 nF per 100 m 
Cable Resistance = >9.08  per 100 m
Cable Attenuation 0.2 MHz > 0.93 dB/100 m 5 MHz > 1.39 dB/100 m 
(-20…70 °C) 0.5 MHz > 0.95 dB/100 m 10 MHz > 1.86 dB/100 m 
1 MHz > 1.07 dB/100 m 20 MHz > 2.73 dB/100 m

2 MHz > 1.16 dB/100 m 50 MHz > 4.33 dB/100 m
2 Belden Wire & Cable 1189A may be used, but with functional loss of communication distance,
nodes, or both.