4. Controller specifications
1. Power supply:
● Overvoltage and reverse polarity protection (suppressor)
● Overload protection (resettable fuse)
● Independent overload protection for all reader power
supply chains (resettable fuses)
2. Communication line (Ethernet):
● Full galvanic isolation
3. Communication line (RS485):
● Full galvanic isolation (voltage up to 2500V)
● Built-in four-level lightning protection
● Gas-filled surge arrester (single release suppressing
current 15.000A, periodic noise suppressing current
10A)
● Suppressors (voltage limitation at +12... -7V)
● Resettable fuses for protection against overloads and
short circuits in the communication line
● Resettable fuses for interface circuit supply