ABB AC31 Assembly And Operation Manual page 65

Fig. 42: DIP switch for 07DC91-AD
1.5.1.6 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.
2018/09/24
The DIP switches are read by the device only once after the supply voltage has
been connected.
For further information, please refer to the existing documentation
System description Advant Controller 31.
3ADR010122, 8, en_US
Replacement devices: I/O modules > Replacement device 07DC91-AD
AC31 Adapters
65