Functionality
Parameter
Value
LED displays
For signal states, errors and supply voltages
Internal power supply
Via I/O bus
External power supply
Via the terminals ZP, ZP3, ZP4, UP, UP3 and UP4
(process voltage 24 V DC)
Required terminal unit
TU542
Chapter 1.5.2 “TU515, TU516, TU541 and
TU542 for I/O modules” on page 126
The output module is plugged on the terminal unit TU542. Properly position 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
Chapter 1.8.2.6 “TA526 - Wall mounting
).
Connections
For a detailed description of the mounting, disassembly and connection of the
module, please refer to the System Assembly, Construction and Connection
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 2.8 and 1.9 to 2.9 are electrically interconnected within the I/O terminal unit
and always have the same assignment, irrespective of the inserted module:
Terminals 1.8 to 2.8:
Process voltage UP = +24 V DC
Terminals 1.9 to 2.9:
Process voltage ZP = 0 V
Terminal 3.8:
Process voltage UP3 = +24 V DC
Terminal 3.9:
Process voltage ZP3 = 0 V
Terminal 4.8:
Process voltage UP4 = +24 V DC
Terminal 4.9:
Process voltage ZP4 = 0 V
Terminals
Signal
Description
3.0, 3.1, 3.4, 3.5
O0 to O3
4 digital outputs
4.0, 4.1, 4.4, 4.5
O4 to O7
4 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 DO526.
The external power supply connection is carried out via the UP, UP3, UP4 (+24 V DC) and the
ZP, ZP3, ZP4 (0 V DC) terminals.
Device specifications
I/O modules > Digital I/O modules
2022/01/31
3ADR010278, 3, en_US
320