Siemens SCALANCE MUM853-1 Operating Instructions Manual page 43

Follow the steps below to mount the device on an S7-1500 mounting rail:
1. Loosen the knurled screw with your hand or a screwdriver.
2. Place the first housing guide of the device on the top edge of the mounting rail.
3. Using a screwdriver, pull the securing bar down as far as it will go.
4. With the securing bar pulled, swivel the device to the mounting rail and press it against the
mounting rail until the spring-mounted securing bar locks into place.
5. Tighten the knurled screw to secure the device additionally (torque 0.5 Nm).
6. Connect the device; see section "Connecting (Page 45)".
Uninstalling
To remove the device from the mounting rail, follow these steps:
1. Turn off the power to the device.
2. Disconnect all connected cables.
3. If necessary, loosen the knurled screw with your hand or a screwdriver.
4. Using a screwdriver, pull the securing bar down as far as it will go.
5. Remove the device from the mounting rail with the bar pulled.
SCALANCE MUM853-1
Operating Instructions, 03/2023, C79000-G8976-C650-05
Installation and removal
5.6 Installing on an S7-1500 mounting rail
43