Siemens SIDOOR ATD401W System Manual page 106

Controllers
4.2 Installing the control unit
Proceed as follows to mount the standard rail mounting:
Steps
1. Select either a vertical or horizontal
orientation for mounting the control-
ler on the standard mounting rail.
2. Screw the SIDOOR standard rail
mounting tightly to the controller with
2 (M4 x 6) screws. Use the predrilled
holes in the controller for this pur-
pose.
106
Figure
Vertical
Horizontal
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB