User guide

Hardware Planning
104
890 USE 108 00 August 2001
Choosing DTA Backplanes
Overview of DTA
Backplanes
A Compact Controller and its associated A120 I/O modules are installed in DTA
backplanes which mount on the DIN rail. Three backplanes are available: the
primary DTA 200, and two optional secondary DTA 201 and DTA 202 backplanes.
The DTA 200
Primary
Backplane
At a minimum, your drop must have a DTA 200 primary backplane. The Compact
Controller will reside in the two leftmost slots in the DTA 200 backplane, it plugs into
a 30-pin power supply connector and two 30-receptacle connectors. Three
additional 30-receptacle slots available for A120 I/O modules or option modules
such as the P120 ac-to-dc Power Supply or A120 simulator modules. Only one DTA
200 backplane is used in a drop.
This shows the DTA 200 primary backplane.
The DTA 200 is 213.4 mm wide x 142 mm high x 31 mm deep, and drops onto a DIN
EN 50 022 carrier rail, two clips at the bottom of the backplane secure the unit to the
DIN rail. On the right side of the DTA 200 backplane is a 30-pin I/O bus extension
connector that allows you to connect a secondary (DTA 201 or DTA 202) backplane.
Six through-holes provide spaces through which mounted units may make contact
with functional ground on the DIN rail.
Power Supply
Connector
Securing
Clips
Additional
Fastening Screws
Ground-Contact
Through-Holes
30-Receptacle
I/O Bus
Connectors
Bus Extension
Connector
Optional plastic
spacer strip
provided with DTA
housing for 15 mm
DIN rail mounting