ABB AC31 Assembly And Operation Manual page 11

Possible CS31 slaves:
● 07AC91-AD, 07AC91
● 07AC91-AD2
● 07AI91-AD, 07AI91
● 07DC91-AD, 07DC91
● 07DC92-AD, 07DC92
● DC501-CS31-AD, DC501-CS31
The following diagram shows the bus topology without shielding and earthing treatment:
Fig. 4: Bus topology with CS31 bus master on the side
The following diagram shows the bus topology without shielding and earthing treatment:
Fig. 5: Bus topology with CS31 bus master in the middle
CS31 cable Correct cable laying:
laying
2018/09/24
The CS31 slave DC501-CS31-AD has an internal 120 Ω terminating resistor
which can be connected by using a DIP switch. On the other CS31 slaves and
the CS31 bus master, the terminating resistor must be installed externally by the
user.
CAUTION!
Risk of malfunctions!
Spur lines are not allowed within the CS31 bus. Loop the bus line from module
to module.
3ADR010122, 8, en_US
System data and CS31 bus system data > CS31 bus system data
AC31 Adapters
11