Connecting The Power Supply To A B&R Device; Grounding Concept - Functional Ground - B&R Industries Panel PC 2100 User Manual

Installation • Connecting to the power mains
2.2 Connecting the power supply to a B&R device
Danger!
The voltage supply to the B&R device must be completely disconnected. Before connecting the power
cable, it is important to make absolutely sure that it has been disconnected from the power source
(e.g. power supply).
1. Touch the housing or ground connection in order to discharge any electrostatic charge from your body.
2. Connect the power supply connector to the B&R device and tighten the fastening screws (max. tightening
torque 0.5 Nm).

2.3 Grounding concept - Functional ground

Functional ground is a current path of low impedance between electrical circuits and ground. It is used, for example,
to improve immunity to disturbances and not necessarily as a protective measure. It therefore serves only to deflect
disturbances, not to provide any kind of protection against electric shock.
This device comes equipped with two functional ground connections:
• Power supply
• Ground connection
To guarantee safe conductance of electric disturbances, the following points must be observed:
• The device must be connected to the central grounding point in the control cabinet using the shortest route
possible.
• A cable with a minimum cross section of 2.5 mm² per connection should be used. If a cable with wire end
sleeves is connected to the 0TB103.9 or 0TB103.91 terminal block, then a cable with maximum 1.5 mm²
per connection is possible.
• Note the line shielding concept. All data cables connected to the device must be shielded.
Symbol indicating functional ground on the B&R device:
92
Figure 51: Connecting the power supply connector to a B&R device
Panel PC 2100 swing arm user's manual V1.00