Bonding And Grounding - Mettler Toledo ACM500 Guia De Instalacion

3.6.6. EtherNet/IP and Modbus TCP Interface
The EtherNet/IP Module (Figure 3-26) connects to the network via a standard Ethernet patch cable
with an RJ45 connector. The module's address is set in software, and the DIP switches located on
the board are not used and must all be set to OFF.
3.7.

Bonding and Grounding

The equipotential bonding (EB) should be completed per specific local and country regulations. In
the United States, this is ANSI/NFPA 70, article 504 and ANSI/IA RP 12.06.01. In Canada this is the
Canadian Electrical Code C22.2. The equipotential bonding should be installed by an electrician
authorized by the equipment owner.
It must be ensured that the housings of all devices in an intrinsically safe system are connected to
the same potential via the EB grounding connection, and the neutral point for equipotential bonding
is as close to the weighing system as possible. In addition, no circulating current may flow via the
shielding of the intrinsically safe cabling.
3-20
METTLER TOLEDO ACM500 Installation Manual
Figure 3-26: EtherNet/IP Option Board
If installing the EtherNet/IP option, an EtherNet/IP PLC label is provided for convenience in
the kit. The label can be applied to the ACM500 enclosure near the EtherNet/IP connector,
as shown in Figure 3-16.
Figure 3-27: Ethernet Label Position
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