ABB AC31 Assembly And Operation Manual page 150

AC31 Adapters
Replacement devices: I/O modules > Replacement unit DC501-CS31-AD
Fig. 96: Formula: Voltage
1.5.6.2.4 Behavior during normal operation
Interpretation of the LEDs:
● The device initializes automatically after the supply voltage is switched on. During this time,
the S-ERR LED flashes.
● The PWR LED lights up as soon as the internal supply voltage of the device is present.
● After successful initialization of the I/O bus communication to the S500 module, the I/O bus
LED lights up.
● After successful initialization of the CS31 bus communication, the CS31 bus LED lights up.
The S-ERR LED goes out.
● During operation, the yellow LEDs indicate the signal statuses of the channels.
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 are switched off.
The inputs remain active. The outputs are also switched off in case of a malfunction of the CS31
bus.
1.5.6.2.5 Diagnosis and display
The replacement device transmits diagnosis information also via the CS31 bus.
Table 94: Diagnosis information CS31 bus
Error description
Device error
Device error
Channel error
150
Documentation change
The replacement device does not have an expansion bus. Expansion modules
cannot be connected. For this reason, chapter "1.1.3 Addressing" of the tech-
nical description of DC501-CS31 concerning the expansion modules (e.g.
DX511, DI511, DO511, AX511, AI511, AI512) is not valid for the replacement
device. Possible data structures for the replacement device are indicated in the
following table.
Chann Error code
el (CODESYS)
0 43
1 45
0...15 46
3ADR010122, 8, en_US
Error code Description
(CS31 bus)
1 Internal error
2 No supply voltage V+ avail-
able
4 Overload or short circuit on
a digital output
2018/09/24