Emerson AMS, Installation Manual, Page: 40 / 92

• External grounding terminal (recommended): Use a grounding cable with a
wire cross section in accordance to the local rules and standards. Emerson
recommends a grounding cable with a wire cross section of 6 mm
2
and a cable
lug at the end suitable for the diameter of the grounding screw.
• Internal grounding terminal (minimum requirement): Use a grounding cable
with a wire cross section equal to the wire cross section of the cable with the
hazardous live voltages and a cable lug at the end suitable for the diameter of
the grounding screw.
Ensure that the equipotential busbar is connected to protective ground.
2. Connect the shields of the field wiring cables to ground.
• Field-side grounding (recommended): Connect the shields of the field wiring
through the asset housing to ground. The grounding ensures the electrical
interferences are not conducted through the AMS Asset Monitor.
• AMS Asset Monitor-side grounding : Select this option if it is not possible to
connect the shield of the field wiring as described above. Connect the cable
shields to the internal grounding terminals (see
Figure 4-14 , A).
Note
Ensure that the cable shield is not double-sided connected to ground to avoid
ground loops. There may be exceptions to this recommendation.
4.11 Network connection
The AMS Asset Monitor is equipped with an 100 MBit/s Ethernet switch with two RJ-45
sockets to daisy chain up to eight AMS Asset Monitors and to connect this group of daisy
chained devices to an Area Controlled Network (ACN) for data exchange. Both RJ-45
sockets of the switch are equal. See the following diagram for an example of a network
architecture with a group of AMS Asset Monitor connected to an ACN and the subsequent
network architecture. There are three permissible network topologies for the AMS Asset
Monitor group. See
Permissible network topology for details.
Installing AMS Asset Monitor hardware Installation Guide
April 2020 MHM-97923-PBF
40 MHM-97923-PBF, Rev. 1.0