Connecting; Grounding; Ethernet - Emerson Smart Wireless Gateway Reference Manual

Reference Manual
00809-0200-4420, Rev GA
Table 3-1. Remote Antenna Kit Options
Kit Option
WL2
WL3
WL4
WN2
3.4

Connecting

All connections to the Gateway can be made at the terminal block, which is located in the lower
junction box section of the enclosure. The terminal block label is located on the inside of the
lower cover. See
The junction box portion of the enclosure has four conduit entries for power and
communications wiring. Do not run communication wiring in conduit or open trays with power
wiring, or near heavy electrical equipment.
Install the included conduit plugs in any unused conduit openings. For NEMA 4X and IP65
requirements, use thread seal (PTFE) tape or paste on male threads to provide a watertight seal.
3.4.1

Grounding

The Gateway enclosure case should always be grounded in accordance with national and local
electrical codes. The most effective grounding method is a direct connection to earth ground
with minimal impedance. Ground the Gateway by connecting the external grounding lug to
earth ground. The connection should be 1  or less. The external ground lug is located below
the Gateway enclosure and is identified by the following symbol:
3.4.2

Ethernet

The Gateway is equipped with two 10/100BaseTX Ethernet communications ports (see
Figure
communicate Modbus TCP and OPC protocols.
Mounting and Connection
Antenna
1
/ Wavelength
2
Dipole
Omni-Directional
+6 dB Gain
1
/ Wavelength
2
Dipole
Omni-Directional
+6 dB Gain
1
/ Wavelength
2
Dipole
Omni-Directional
+6 dB Gain
1
/ Wavelength
2
Dipole
Omni-Directional
+8 dB Gain
Figure 3-6 for the standard terminal block label.
3-6). These connections can be used to access the Gateway's web interface and to
Section 3: Mounting and Connection
Cable 1 Cable 2
50 ft. (15,2 m) N/A
LMR-400
30 ft. (9,1 m) 20 ft. (6,1 m)
LMR-400 LMR-400
40 ft. (12,2 m) 10 ft. (3,0 m)
LMR-400 LMR-400
25 ft. (7,6 m) N/A
LMR-400
April 2013
Lightning Arrestor
Head mount, jack to plug
Gas discharge tube
0.5 dB insertion loss
In-line, jack to jack
Gas discharge tube
0.5 dB insertion loss
In-line, jack to jack
Gas discharge tube
0.5 dB insertion loss
Head mount, jack to plug
Gas discharge tube
0.5 dB insertion loss
21