Siemens SIMATIC ET 200SP System Manual page 103

Wiring
6.7 Wiring BaseUnits for I/O modules
Note
Special terminal designations in the wiring and block diagrams of the I/O
modules/BaseUnits
• RES: Reserve, these terminals must remain unconnected so that they can be used for
• n.c.: Not connected, these terminals have no function. However, they can be
Requirements
● The supply voltages are turned off.
● Follow the wiring rules.
● Color identification labels (Page 127) (optional) have been applied.
Required tools
3 to 3.5 mm screwdriver
Tool-free connection of cables: single-wire without wire end ferrule, multi-wire (stranded) with wire
end ferrule or ultrasonically sealed
Watch the video sequence (http://support.automation.siemens.com/WW/view/en/95886218)
To connect a wire without tools, follow these steps:
1. Strip 8 to 10 mm of the wires.
2. Only in the case of stranded conductors (except for 2.5 mm² cross-section):
Seal or crimp the wire with wire end ferrules.
3. Insert the wire into the push-in terminal as far as it will go.
Connection of cables: multi-wire (stranded), without wire end ferrule, unprocessed
To connect a wire without a wire end ferrule, follow these steps:
1. Strip 8 to 10 mm of the wires.
2. Push with the screwdriver into the spring release.
3. Insert the wire into the push-in terminal as far as it will go.
4. Pull the screwdriver out of the spring release.
102
future expansions
connected to potentials specifically defined for a module, for example, for the laying
unused wires.
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ