ABB AC500 PLC Hardware Manual page 299

Digital configurable input/output unit.
● 2 sensor supply voltages 24 VDC, 0.5 A, with short-circuit and overload protection
● 16 digital configurable inputs/outputs 24 VDC (C0 to C15) in 1 group (2.0...2.7 and
4.0...4.7), each of which can be used
–
–
–
● Optional with fast counter
The configuration is performed by software. The modules are supplied with a process voltage of
24 VDC.
All available inputs/outputs are electrically isolated from all other circuitry of the module. There
is no potential separation between the channels within the same group.
For use in extreme ambient conditions (e.g. wider temperature and humidity range), a special
XC version of the device is available.
Functionality
Parameter
Fast counter
LED displays
Internal power supply
External power supply
Required terminal unit
Effect of incorrect input terminal connection
The device is plugged on a terminal unit
for I/O Modules" on page 153. Position the module properly and press until it locks in place. The
terminal unit is either mounted on a DIN rail or to the wall using 2 screws plus the additional
accessory for wall mounting (TA526
on page 1152).
Electrical Connection
The electrical connection of the I/O channels is carried out using the 40 terminals of the I/O ter-
minal unit. I/O modules can be replaced without re-wiring the terminal units.
The terminals 1.8 to 4.8 and 1.9 to 4.9 are electrically interconnected within the I/O terminal unit
and always have the same assignment, irrespective of the inserted module:
Terminals 1.8 to 4.8: process voltage UP = +24 VDC
Terminals 1.9 to 4.9: process voltage ZP = 0 VDC
2019/04/17
as an input,
as a transistor output with short-circuit and overload protection, 0.5 A rated current or
as a re-readable output (combined input/output) with the technical data of the digital
inputs and outputs.
3ADR010121, 13, en_US
Value
Integrated, many configurable operating
modes (only with AC500)
For signal states, errors and supply voltage
Through the expansion bus interface (I/O bus)
Via the terminals ZP and UP (process voltage
24 VDC)
TU515 or TU516
TU516, TU516-H and TU542 for I/O Modules"
on page 153
Wrong or no signal detected, no damage up to
35 V
Ä Chapter 1.4.3 "TU515, TU516, TU516-H and TU542
Ä Chapter 1.8.2.4 "TA526 - Wall Mounting Accessory"
Device Specifications
I/O Modules > Digital I/O Modules
Ä Chapter 1.4.3 "TU515,
299