Siemens Simatic S7-1500R System Manual page 117

Wiring
5.5 Connecting the supply voltage
Connection of wires: multi-wire (stranded), without end sleeve, unprocessed
To connect a wire without end sleeve, follow these steps:
1. Strip 8 to 11 mm of the wires.
2. Press the screwdriver into the spring release. Insert the cable into the push-in terminal as
far as it will go.
3. Pull the screwdriver out of the spring release.
4. Push the wired connector into the socket of the CPU.
Loosening a wire
To unplug a wire, follow these steps:
1. Push with the screwdriver as far as it will go into the spring release.
2. Remove the wire from the push-in terminal.
Uninstalling the connection plug
With the screwdriver, pry the connector out of the CPU.
116
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA