To Next Page

To Previous Page

To use the DC terminal block, follow these steps:

1. Slide the cover ② to the right.

In this position, you cannot tighten the screw ③. The screw is captive and stays connected

to the cover.

2. Connect the device to the power supply using the DC terminal block ①.

DC voltage is connected at the following terminals:

– Plus to "L"

– M to "N"

3. Tighten the screws on the DC terminal block to clamp the connecting wires onto it. The

tightening torque is 0.5 Nm to 0.6 Nm.

Note

If you do not use the DC connection, slide the cover over the DC connection (to the left) and

tighten the screw for protection of the DC connection ③.

6.5 Grounding

WARNING

Danger from line voltage

Grounding simply via the housing is inadequate.

• To ensure safe operation, connect the protective grounding in any case.

For device versions with connection to the power supply via a terminal block, grounding is

performed via the mounting brackets on the device or via the grounding bolt on the rear of

the device.

The grounding bolt is used as follows:

• For 24VAC/DC devices

– For functional grounding

– For protective and functional grounding according to UL 62368-1 / CSA-C22.2 No.

62368-1 and UL 61010-1 / CSA-C22.2 No. 61010-1

• For protective and functional grounding for 100 to 240VAC / 110 to 250VDC devices

For 100 to 240VAC / 110 to 250VDC devices connected to the power supply via an IEC plug,

grounding is performed via the power cable.

Note

Grounding via power cable is not approved for operation in compliance with UL 62368-1 / CSA-

C22.2 No. 62368-1 and UL 61010-1 / CSA-C22.2 No. 61010-1.

Connecting up

6.5Grounding

SCALANCE XR-500

Operating Instructions, 07/2023, C79000-G8976-C692-01 73

Siemens SCALANCE XR-500 User Manual

Other manuals for Siemens SCALANCE XR-500