Siemens SIMATIC ET 200SP System Manual page 67

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 for multi-stranded wires:
Seal or crimp the wire with wire end ferrules.
3. Insert the wire into the push-in terminal as far as it will go.
4. Push the wired connector plug into the plug socket of the interface module.
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. Using a screwdriver, press the spring opener and insert the wire into the push-in terminal
as far as it will go.
3. Pull the screwdriver out of the spring opener.
4. Push the wired connector plug into the socket in the interface module.
Removing a wire
Using the screwdriver, press the spring opener as far as it will go and pull out the wire.
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF
5.8 Connecting the supply voltage to the CPU/interface module
Wiring
67