ABB AC31 Assembly And Operation Manual page 66

AC31 Adapters
Replacement devices: I/O modules > Replacement device 07DC91-AD
The RAM is checked during the initialization of the device. In addition, the firmware in the Flash
memory is checked by means of a checksum during initialization. When the control system
(PLC/central unit) is stopped during normal operation, the outputs of the device 07DC91-AD are
switched off. The inputs remain active. The outputs are also switched off in case of a malfunc-
tion of the CS31 bus.
1.5.1.7 Diagnosis and Displays
LEDs are used for diagnosis and display purposes. In addition, some diagnosis information can
be transmitted via the CS31 bus.
Table 34: Diagnosis information of the CS31 bus
Error description
Device error
Channel error
*) The channel numbers are grouped as follows:
0 - for X5/3.0, X5/3.1, X5/3.2, X5/3.3
4 - for X5/3.4, X5/3.5, X5/3.6, X5/3.7
8 - for X6/4.0, X6/4.1, X6/4.2, X6/4.3
12 - for X6/4.4, X6/4.5, X6/4.6, X6/4.7
Table 35: Device LEDs
LED
PWR
CS31
bus
S-ERR
I/O bus
66
The replacement device does not provide a test button to measure functionality.
Channel
0
0, 4, 8, 12 *)
The error codes that are transferred by the replacement device via the CS31
bus bus are newly displayed in CODESYS. Each error code of the CS31 bus
(table column 3) produces the error code in CODESYS (table column 2). As a
result, it is possible to operate the replacement device with a new control
system (PLC/control unit), e.g. 07KT98-ARC-AD, as well as with an old control
system (PLC/central unit), e.g. 07KT98.
Status Color LED off
Voltage supply Gree
n
CS31 bus com- Gree
munication n
Error Red
I/O bus commu- Gree
nication n
3ADR010122, 8, en_US
Error code Error code
(CODESYS) (CS31 bus)
43 1
46 4
LED on
No internal supply Internal supply
voltage voltage
No CS31 bus com- CS31 bus bus
munication communication
No error Static error
(must be con-
firmed by the
control system)
No I/O bus commu- I/O bus com-
nication munication
Description
Internal error
Overload or short
circuit on a digital
output
LED flashes
-
Only diagnosis, no
data transfer. Trans-
mission is disturbed.
No CS31 bus con-
nection or activity
Error I/O bus com-
munication
2018/09/24