ABB AC500 PLC - 1.7.3.1.2 Functionality; 1.7.3.1.3 Electrical Connection

The inputs/outputs are electrically isolated from the Ethernet network. There is no potential sep-
aration between the channels. The configuration of the analog inputs/outputs is performed by
software.
1.7.3.1.2 Functionality
Parameter Value
Interface Ethernet
Protocol EtherCAT
Power supply From the process supply voltage UP
Supply of the electronic circuitry of the I/O
expansion modules attached
Through the expansion bus interface (I/O bus)
Rotary switches Not used; reserved for future extensions
Analog inputs 4 (configurable via software)
Analog outputs 2 (configurable via software)
Digital inputs 8 (24 VDC; delay time configurable via soft-
ware)
Digital outputs 8 (24 VDC, 0.5 A max.)
LED displays For system displays, signal states, errors and
power supply
External supply voltage Via terminals ZP, UP and UP3 (process supply
voltage 24 VDC)
Effect of incorrect input terminal connection Wrong or no signal detected, no damage up to
35 V
Required terminal unit
TU507 or TU508 Ä Chapter 1.4.1 “TU507-ETH
and TU508-ETH for Ethernet Communication
Interface Modules” on page 145
1.7.3.1.3 Electrical Connection
The Ethernet bus module CI511-ETHCAT is plugged on the I/O terminal unit TU507-ETH or
TU508-ETH. Properly seat the module and press until it locks in place. The terminal unit is
mounted on a DIN rail or with 2 screws plus the additional accessory for wall mounting (TA526).
For a detailed description of the mounting, disassembly and electrical connec-
tion of the module, please refer to the System Assembly, Construction and Con-
nection chapter Ä Chapter 2.6 “AC500 (Standard)” on page 1248.
The electrical connection of the I/O channels is carried out using the 30 terminals of the I/O ter-
minal unit. I/O modules can be replaced without re-wiring the terminal units.
The terminals 1.8 and 2.8 as well as 1.9, 2.9 and 3.9 are electrically interconnected within the
terminal unit and have always the same assignment, independent of the inserted module:
Terminals 1.8 and 2.8: Process supply voltage UP = +24 VDC
Terminal 3.8: Process supply voltage UP3 = +24 VDC
Terminals 1.9, 2.9 and 3.9: Process supply voltage ZP = 0 V
Device Specifications
Communication Interface Modules (S500) > EtherCAT
2019/04/17 3ADR010121, 13, en_US 829