Rockwell Automation TBT Bus Terminator - Manual (Page 4)

4 TBT October 2005 – Issue 2
Triguard SC300E
TECHNICAL DESCRIPTION
PHYSICAL
The TBT bus terminator consists of a DIN41612 connector with two fixing screws to fit to the
bus expansion adaptors (TBA) fitted to the SC300E chassis.
THEORY OF OPERATION
If the SC300E chassis are arranged with the MPPs at one end of the bus then the TBTs must
be fitted at at the other end of the bus as shown in Figure 2-1 .
If the bus is arranged with the MPPs in the middle of the bus then TBTs will be required at both
ends of the bus as shown in Figure 2-2 .
Figure 2-1 TBT termination diagram - Main chassis at one end of the bus