User Manual

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Siemens TX-I/O Engineering and installation guide CM110562en_13
Building Technologies TX-I/O™ module system and accessories 2019-05-15
3.3.3 Electrical characteristics
• Please also note the safety guidelines in Section 2
• For detailed electrical data, please refer to the module data sheets
• The following points are of particular note:
The bus cables are described below in Section 3.4 "TXS1.12F10 power supply module
and TXS1.EF10 bus connection module".
The modules can be removed from or plugged into the terminal base without switching
off the power (but not suitable for frequent action – risk of burnt contacts between the
terminal base and the plug-in module, if large loads are connected to the terminals).
See "Wiring safety notes", page 15.
See "Wiring safety notes", page 15.
• The modules support volt-free contacts or electronic switches such as transistors
and optocouplers.
Both N/O and N/C logic is supported.
• The interrogation voltage is derived from the module
• Voltage sensing is not supported.
All signal neutral terminals are interconnected, not in the terminal base but in the plug-
in module. Hence, when the plug-in module is removed from the base, there is no
connection.
For applications involving frequent switching operations, it is important to be aware of
the service life of the relay contacts. Please refer to the technical data in the data
sheets or on page 115.
3.3.4 Indicators and operator controls
See Section 9 "Display, operation, and diagnostics".
Bus connectors
Removing and inserting
plug
-in modules without
disconnecting the supply
Electrical isolation
Protection against
incorrect wiring
Digital inputs
Signal neutral terminals
Relay contacts