ABB AC31 Assembly And Operation Manual page 114

AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AC91-AD
Fig. 72: DIP switch for 07AC91-AD
Please observe the following:
● All channels must be configured as outputs.
The function of the address DIP switch 8 (channel No. £ 7 or channel No. > 7) is no longer
●
supported. This DIP switch must be switched off. The outputs on connector X3 and X7
cannot be configured as current outputs.
● The operating mode (address DIP switch 1) must be set to "8 bit".
● The DIP switches are read by the device only once after the supply voltage has been con-
nected.
1.5.4.2.4 Measuring ranges of the analog channels
For the replacement device 07AC91-AD, only the operating mode "8 bit" is relevant.
The outputs of the S500 module AO523 have a 12 bit resolution. The values that are to be
transmitted via the CS31 bus bus and output by the replacement device have only a 8 bit reso-
lution. For this reason, the overall resolution achieved is only 8 bits.
114
For further information, please refer to the existing documentation
System description Advant Controller 31.
3ADR010122, 8, en_US 2018/09/24