Connection
5.6 Grounding
SCALANCE W774-1 /W734-1
48 Operating Instructions, 07/2020, C79000-G8976-C325-14
Inserting the PLUG
Follow the steps below to insert a PLUG in the device:
1. Turn off the power to the device.
2. Release the screw slot cover (position ①) and swing the slot cover to the side (position
②).
3. The housing of the PLUG has a protruding ridge on the long side (position ④). The slot
has a groove at this position. Insert the PLUG correctly oriented into the slot. The PLUG
is correctly inserted when it is completely inside the device and does not jut out of the
slot.
4. Close the slot cover (position ②).
5. Tighten the screw at position ① to secure the slot cover.
Licenses on the KEY-PLUG
A C-PLUG only stores information about the configuration of a device. In addition to the
configuration, a KEY-PLUG also contains a license with which you can enable special
functions, for example iFeatures. You will find the article numbers in Accessories.
5.6 Grounding
Grounding with wall mounting
The device is grounded by the securing screw in the unpainted hole (diameter 4.5 mm)
see position ⑧ of the Device description.
If the device is mounted on a non-conductive base, a grounding cable must be fitted. The
grounding cable is not supplied with the device. Connect the paint-free surface of the
device to the nearest grounding point using the grounding cable.
Grounding when installing on a DIN rail / S7 standard rail
The device is grounded via the rear of the device.
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