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5.1.5 Grounding (functional ground)
Disturbances are discharged effectively via a grounding clip. For additional information about electromagnet-
ic compatibility, see the INSTALLATIONS / EMC GUIDE user's manual (MAEMV-ENG on the B&R website
www.br-automation.com).
Notice!
Possible malfunction of interfaces and touch screen!
If functional ground is not present, faults in interface communication and touch screen functionality
can occur.
The device is only permitted to be operated if properly grounded.
Grounding in the control cabinet
Notice!
The ground connection of the device must be low impedance and connected to ground (e.g. grounding
rail in the control cabinet) using a short path.
5.1.6 Securing the connecting cables
On Power Panel variants with 15.6" display size, cables
can be relieved of tensile stress using the cable clamps
provided on the back of the device.
For all other Power Panel variants, an appropriate
method for securing the connecting cables in the vicini-
ty of the device (control cabinet, machine, etc.) must be
provided.
5.1.7 Requirements for the cables used
Notice!
To meet the UL certification requirements, copper cables must be used that are designed for an oper-
ating temperature >70°C.
Power Panel T80 User's manual V1.03
Ground connection
Control cabinet
≥4 mm²
Figure: Grounding in the control cabinet
Commissioning
Grounding rail
Cable clamps
33
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