Functionality
Parameter Value
LED displays For signal states, errors and supply voltage
Internal power supply Via the I/O bus interface (I/O bus)
External power supply Via the terminals ZP and UP (process voltage
24 V DC)
Required terminal unit
TU515 or TU516
Ä
Chapter 1.5.2 “TU515, TU516,
TU541 and TU542 for I/O modules” on page 126
The device is plugged on a terminal unit
Ä
Chapter 1.5.2 “TU515, TU516, TU541 and TU542
for I/O modules” on page 126. 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
Ä
Chapter 1.8.2.6 “TA526 - Wall mounting accessory”
on page 902).
Multiple overloads
No effects of multiple overloads on isolated multi-channel modules occur, as
every channel is protected individually by an internal smart high-side switch.
Connections
For a detailed description of the mounting, disassembly and connection of the
module, please refer to the System Assembly, Construction and Connection
chapter
Ä
Chapter 2.6 “AC500 (Standard)” on page 971.
The connection of the I/O channels is carried out using the 40 terminals of the I/O terminal 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 have always the same assignment, independent of the inserted module:
Terminals 1.8 to 4.8: process voltage UP = +24 V DC
Terminals 1.9 to 4.9: process voltage ZP = 0 V DC
The assignment of the other terminals:
Terminals Signal Description
1.0 to 1.7 O0 to O7 8 digital outputs
2.0 to 2.7 O8 to O15 8 digital outputs
3.0 to 3.7 O16 to O23 8 digital outputs
4.0 to 4.7 O24 to O31 8 digital outputs
The internal power supply voltage for the module's circuitry is carried out via the I/O bus
(provided by a communication interface module or a CPU). Thus, the current consumption from
24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/communication interface
module increases by 2 mA per DO524.
The external power supply connection is carried out via the UP (+24 V DC) and the ZP (0 V DC)
terminals.
I/O modules > Digital I/O modules
2022/01/313ADR010278, 3, en_US312
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