AEG DUA2.1 Technical Manual And User Manual page 27

BURDENS
Voltage circuits
REFERENCE VOLTAGE (VN)
VN = 57 – 20 0V
VN = 220 – 480V
Auxiliary supply
Nominal* : 3W
* Nominal is with 50% of the optos energised and one relay
per card energised
Optically-isolated inputs
Reference voltage
<0,25 VA
<0,36 VA
Current (per logic input)