ABB AC31 Assembly And Operation Manual page 67

The S-ERR LED remains on even if the error no longer occurs. The error must be confirmed by
the control system (PLC/central unit), e.g. by means of a function block
data and CS31 bus system data" on page 4.
Special cases with rapidly flashing LEDs (approx. 5 Hz):
● All 4 LEDs flash rapidly: An incorrect S500 module is connected to the device. The device
fails to initialize.
● The LEDs of the CS31 bus, S-ERR bus and I/O bus flash rapidly: Invalid position of DIP
switches. The device fails to initialize.
● 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 36: LEDs of the S500 module DC532
LED
I0...I7 (see
No. 1 in the
following
figure)
- I8...I15 (see
No. 2 in the
following
figure)
C16...C23
(see No. 3 in
the following
figure)
C24...C31
(see No. 4 in
the following
figure)
Error indica-
tions left (see
No. 5 in the
following
figure)
Error indica-
tions right
(see No. 5 in
the following
figure)
Indication
supply
voltage (see
No. 6 in the
following
figure)
2018/09/24
Replacement devices: I/O modules > Replacement device 07DC91-AD
Status Color LED off
Digital inputs Yellow Input is not acti-
Digital inputs Yellow Input is not acti-
Digital outputs Yellow Output is not
Digital inputs Yellow Input or output
or digital out-
puts
Error indica- Red
tion
Error indica- Red
tion
Process Green Process voltage
voltage
3ADR010122, 8, en_US
LED on
Input is activated
vated (input voltage is
indicated even if
supply is switched
off)
Input is activated
vated (input voltage is
indicated even if
supply is switched
off)
Output is activated
activated
Input is activated
is not activated (input voltage is
indicated even if
supply is switched
off)
No error Internal error
No error Internal error
Process voltage OK -
not available
AC31 Adapters
Ä Chapter 1.3 "System
LED flashes
-
-
-
-
-
Overload or
short circuit on
a channel of
the corre-
sponding
group
67