Rockwell Automation Chassis Models - Manual (Page 15)

Chassis Models October 2005 – Issue 4 15
Triguard SC300E Chassis Models
• A ‘rear plug up’ expansion connector for each bus
• A rear mounted diagnostic port for each processor
• Polarised power input connectors
• PSU status output connectors
• Spade terminal earth connectors for optional chassis earthing
• Spade terminal earths for optional Field I/O cable earthing
Many of the above functions are allocated specific areas with alphabetic references on the
backplane as shown in Table 2-2.
Table 2-2. Backplane areas and their function
Area Function
a System bus
b I/O Field Connectors
c I/O Field Connectors
d System bus
e Expansion bus connectors
f Watchdog timer connectors (not active)
g Diagnostic connectors
h Power supply units
i PSU status connectors
k Power input connectors
Rear plug up technique
In the ‘rear plug up’ technique, connectors fitted to the front of the backplane have wire wrap
tails protruding from the back of the board and are fitted with shrouds to form rear connectors.
The technique is used on the three expansion buses in area ‘e’ and on all the Field I/O
connectors in areas ‘b’ and ‘c’. The connectors are all DIN41612 types.
CONNECTOR DETAILS
The following pages contain details and pinouts of the backplane connectors viewed from the
rear.
Area ‘a’ - System bus
Area ‘a’ contains the system bus connections to connector J1 on each I/O module.