Siemens SIMATIC S7-1500 System Manual page 167

Tools required
Slotted-head screwdriver with 4.5 mm blade
Installing R/H-CPUs
Watch the video sequence (https://support.industry.siemens.com/cs/ww/en/view/78027451)
Proceed as follows to install an R/H-CPU:
1. Install the CPU to the mounting rail.
Only with optional load current supply: Move the CPU to the load current supply on the
left.
2. Swivel the CPU in to the rear.
3. Screw the CPU tight (torque 1.5 Nm).
Uninstalling R/H-CPU
The R/H-CPU is wired.
Proceed as follows to uninstall an R/H-CPU:
1. Open the front cover.
2. Switch the CPU into STOP mode.
3. Turn off the supply voltage.
4. Pull off the connector for the supply voltage.
5. Disconnect the cables at the CPU:
– R-CPU: Disconnect the PROFINET cables.
– H-CPU: Disconnect the PROFINET cables and fiber-optic cables.
6. Undo the CPU fixing screw(s).
7. Pivot the CPU out of the mounting rail.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Installation
6.5 Installing R/H-CPUs
167