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Fieldbus Power Hub,Motherboard for Gateway and Power Supply Modules
Installation and Commissioning
3.3.1
Connection to Equipotential Bonding System
Caution!
Risk of electric shock or property damage from inadequate grounding
If you fail to connect all metal parts of the device to protective local earth correctly, this could
result in potential equalization currents. These currents could hurt operating personnel or
cause property damage.
The grounding terminal is not a safety earth: Do not use the grounding terminal to ground
exposed metal parts.
Ground exposed metal parts of the device separately. Ensure that a correct grounding is
guaranteed at all times.
All shield connections are internally connected to the "Shield/Screen GND" grounding terminal.
Connecting the Ground Connection Cable
Note!
Use a cable with a minimum cross core section of 4 mm².
1. Connect the ground cable to a cable lug.
2. Position the cable lug over the ground connection clamp with the cable pointing downwards.
3. Screw the cable lug to the ground connection clamp with 2 toothed lock washers inserted
between screw, lug, and clamp as illustrated:
Figure 3.1
1
Screw
2
Toothed lock washer
3
Cable lug
4
Ground connection clamp on motherboard
4. Tighten the screw with a torque of 1.5 Nm.
The cable lug is properly attached and cannot come loose.
Connect the "Shield/Screen GND" grounding terminal to an equipotential bonding system.
Connecting the ground connection cable
1
2
3
2
4
17
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