Cs31 Bus System Data - ABB AC31 Assembly And Operation Manual

AC31 Adapters
System data and CS31 bus system data > CS31 bus system data
● Install the lines in groups (power lines, power supply lines, signal lines, data lines).
● Use lines with braided cable shield for analog signals. Earth the shield on both sides and
make sure that no compensation currents flow through the cable shield. For this purpose,
use a potential equalization line with current carrying capacity, for instance on systems con-
sisting of several switchgear cabinets.
Further information concerning CS31 bus earthing:

1.3.2 CS31 bus system data

1.3.2.1 Wiring
Table 6: Bus line
Data
Configuration
Cross section
Twisting rate
Core insulation
Resistance per core
Characteristic impedance
Capacitance between the cores
Terminating resistors
Notes
1.3.2.2 Bus topology
A CS31 system bus always contains only one CS31 bus master to control the bus. Up to 31
CS31 slaves can be controlled by one bus. The CS31 bus master has no address, whereas the
CS31 slaves can accept addresses in the range from 0 - 61, depending on CS31 slave type.
Possible CS31 bus masters:
● 07KT94-ARC-AD, 07KT94
● 07KT98-ARC-AD, 07KT98
● 07KT98-ARC-DP-AD
● 07KT98-ARC-ETH-AD
● 07KT98-ETH-DP-AD
● 07KT98-ARC-ETH-DP-AD
10
The baud rate used on the CS31 bus is 187.5 kBaud.
3ADR010122, 8, en_US
Value
2 cores, twisted, with common shield
> 0.22 mm² (24 AWG)
Recommendation: 0.5 mm² corresponds to Ø
0.8 mm
> 10/m (symmetrically twisted)
Polyethylene (PE)
< 100 Ω/km
approx. 120 Ω (100 ... 150 Ω)
< 55 nF/km (in case of higher capacitance
values, the maximum possible bus length is
reduced)
120 Ω ¼ W at both ends
Cables with PVC core insulation and core
diameter of 0.8 mm can be used up to a
length of approx. 250 m. In this case, the ter-
minating resistor is 100 Ω. Cables with PE
core insulation can be used up to a length of
approx. 500 m.
2018/09/24