The connection of the I/O channels is carried out using the 30 terminals of the I/O terminal unit.
I/O modules can be replaced without re-wiring the terminal units.
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 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 V DC
Terminal 3.8: Process supply voltage UP3 = +24 V DC
Terminals 1.9, 2.9 and 3.9: Process supply voltage ZP = 0 V
With a separate UP3 power supply, the digital outputs can be switched off
externally. This way, an emergency-off functionality can be realized.
Do not connect any voltages externally to digital outputs!
Reason: External voltages at an output or several outputs may cause that
other outputs are supplied through that voltage instead of voltage UP3 (reverse
voltage). This is unintended usage.
CAUTION!
Risk of malfunction by unintended usage!
If the function cut-off of the digital outputs is to be used by deactivation of the
supply voltage UP3, be sure that no external voltage is connected at the outputs
DO0...DO7.
The assignment of the other terminals:
Terminal
Signal
Description
1.0
AI0+
Positive pole of analog input signal 0
1.1
AI1+
Positive pole of analog input signal 1
1.2
AI2+
Positive pole of analog input signal 2
1.3
AI3+
Positive pole of analog input signal 3
1.4
AI-
Negative pole of analog input signals 0 to 3
1.5
AO0+
Positive pole of analog output signal 0
1.6
AO1+
Positive pole of analog output signal 1
1.7
AI-
Negative pole of analog output signals 0 and 1
1.8
UP
Process voltage UP (24 V DC)
1.9
ZP
Process voltage ZP (0 V DC)
2.0
DI0
Signal of the digital input DI0
2.1
DI1
Signal of the digital input DI1
2.2
DI2
Signal of the digital input DI2
2.3
DI3
Signal of the digital input DI3
Device specifications
Communication interface modules (S500) > PROFINET
2022/01/31
3ADR010278, 3, en_US
799