IQ 100 Series ((130/140/150) Meter
Communication Installation
User and Installation Manual IM02601003E - September 2011 www.eaton.com 43
Incorrect Topologies
Twisted pair, shielded (SH) cable
+ - SH
+ - SH
+ - SH
Slave device 1
Slave device 2
Last Slave device N Master device
Earth Connection, preferably at
sin
le location
Twisted pair, shielded (SH) cable Twisted pair, shielded (SH) cable
Twisted pair, shielded (SH) cable
+ -SH
Twisted pair, shielded (SH) cable
Twisted pair, shielded (SH) cable
Twisted pair, shielded (SH) cable
+ - SH
+- SH
+ - SH + -SH
Master device
Slave device 1 Slave device 2
Slave device 3 Slave device 4
R
+ - SH
Long stub results “T” connection that can cause
interference
roblem!
“STAR” connection can cause interference
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