Rockwell Automation 57C570 AutoMax PC3000 User Manual - Manual (Page 46)

3Ć8
Drop Cable and Communications
Passive Tap
The drop cable and the
Communications Passive Tap (tap) are
used to connect the AutoMax PC3000
to the coaxial cable. The drop cable
(M/N 57C381) is a threeĆfoot long
multiconductor cable with two 9Ćpin
DĆshell connectors at either end. It
connects the PC3000 to the tap.
The tap (M/N 57C380) provides two
BNCĆjack connectors for connection
to the coaxial cables and terminating
loads. A 9Ćpin DĆshell connector is
provided for connection to the drop
cable. The tap has two fault isolation
resistors in series with the
transmission line to prevent a
malfunctioning PC3000 from affecting
other drops on the network.
PASSIVE TAP
COMMUNICATIONS CARD
NETWORK BNCĆ2 BNCĆ1
9ĆPIN DĆSHELL
CONNECTOR
.218" DIAMETER
MOUNTING HOLE
4.56" CENTER MOUNTING
HOLE TO CENTER
MOUNTING HOLE
Coaxial Cable
The DCSĆNET network uses two types
of coaxial cable, RGĆ59/U or RGĆ11/U.
Cable specifications are provided in
Appendix C. Refer to section 3.3.2 for
information about selecting the
appropriate cable.
INSULATION
CONDUCTOR
SHIELD
OUTER JACKET
BNC Plug Connector
Cable segments are terminated with
BNC plug connectors for attachment
to the taps. Reliance Electric
recommends the dualĆcrimp, BNC
plug connectors manufactured by
AMP, Inc., or an equivalent.
CONTACT FERRULE