ABB AC31 - 1.5.4.2.8 Technical data

● The LEDs of the S-ERR bus and I/O bus flash rapidly: A checksum error occurred in an
internal Flash memory.
● The LED of the I/O bus flashes rapidly: An error occurred in an internal RAM.
Table 68: S500 module AO523 LEDs
LED Status Color LED off LED on LED flashes
O0+…O7+
O8+…O15+
(see No. 1 + 2
in the fol-
lowing figure)
Analog out-
puts
Yellow Output is not
activated
Output is acti-
vated (bright-
ness depends
on value of
analog
signal).
-
Error indica-
tion left (see
No. 3 in the
following
figure)
Error indica-
tion
Red No error Internal error -
Error indica-
tion right (see
No. 3 in the
following
figure)
Error indica-
tion
Red No error Internal error -
Indication
supply voltage
(see No. 4 in
the following
figure)
Process
voltage
Green Process
voltage not
available
Process
voltage OK
-
Fig. 73: AO523
1.5.4.2.8 Technical data
This section provides additional information on section Ä Chapter 1.3 “System data and CS31
bus system data” on page 4. In case of doubt, the following information applies.
For the device 07AC91-AD, only the operating mode "8 bit" is relevant.
AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AC91-AD
2018/09/24 3ADR010122, 8, en_US 117