Installation   
5.5 Installation on a standard S7-1500 rail 
  SCALANCE XM-400 
50  Operating Instructions, 09/2018, C79000-G8976-C306-08 
To remove the device from a standard rail, follow the steps below: 
1.  Disconnect all connected cables. 
2.  Release the screw on the underside of the standard rail. 
3.  Remove the device from the standard rail. 
 
Installation on a standard S7-1500 rail 
Installing on an S7-1500 standard rail 
 
Figure 5-3  S7-1500 standard rail mounting 
To screw the device to an S7-1500 standard rail, you require a securing screw with the 
following properties: 
●  Self-tapping screw 4 x 45 mm 
●  Screw head diameter: max. 7 mm 
To install the device on an S7-1500 standard rail, follow the steps below: 
1.  Place the first housing guide of the device on the top edge of the standard rail 
①. 
2.  Screw the device to the lower part of the standard rail with the supplied securing screw 
② (tightening torque 1.5 Nm), see also "Device views (Page 27)". 
3.  Connect the electrical connecting cables; refer to the section "Connecting up (Page 55)".