Pilz PSS SB CPU - Determining the Bus Cable Runs and Transmission Rate

8 Operating Manual: PSS SB ACTIVE JUNCTION BASIS
Determining the bus cable runs and transmission rate
NOTICE
Please read the information in chapter "Designing a SafetyBUS p network" of the
"SafetyBUS p Installation Manual".
If you are using Active Junction please also note:
• Examine every connection combination between the first and last bus
subscriber across all branches (see Fig. 3)
• If the line under examination contains Active Junctions, account for them with
the virtual cable runs as shown in Table 2:
Number of
Active Junctions
1
2
Virtual cable runs
(total)
50 m
100 m
90 m
Cable runs l
Distance
between
adjacent Active Junctions
in the main branch
---
l
Distance
< 10 m
l
Distance
≥ 10 m
MD
LD
I/OD
I/OD
I/OD I/OD
main line
l
Distance
Active Junctions
I/OD I/OD
main branch
l
Distance
l
Distance
Fig. 3: Active Junction arrangement (example)
Table 2
INFORMATION
If possible place all Active Junctions on the main branch (see Fig. 4). This will
guarantee that a maximum of 2 Active Junctions with virtual cable runs will impact
on the main line.