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THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS I DIVISION 2 GROUPS A,B,C AND D HAZARDOUS LOCATIONS, OR NONHAZARDOUS LOCATIONS ONLY.
FCC Statutory Requirements
Unlicensed operation limits the radio power. High gain aerials may only be
used to compensate for cable losses.
5
4
2
3
1
Antenna Installation
9
8
7
6
1 Wavelength
minimum
Wavelengths
900 MHz = 33 cm
COLINEAR
ANTENNA
SURGE
ARRESTOR
(RECOMENDED)
WEATHERPROOF
CONNECTORS WITH
“3M 23” TAPE
COAXIAL CABLE
*
STRESS RELIEF
LOOP
Factory
RJ-45 Ethernet
Default Switch Connection
RS485 Resistor
Termination
Switch
*
MAST
MODULE
INSTALL ANTENNA ABOVE
LOCAL OBSTRUCTIONS FOR
MAXIMUM RADIO DISTANCE
IF GROUND CONDITIONS ARE
POOR, INSTALL MORE THAN
ONE STAKE
M4 x 5mm
Connect M4 screw terminal on
rear of module to GROUND for
surge protection
9-30V
DC Supply
BEWARE OF
GROUND LOOPS
CONNECTION ON
REAR OF MODULE
RS232 Connections
NOTES
ALL connections must be SELV (Safety Extra Low Voltage <50V AC & <120V DC)
Ethernet Port wiring is that of a hub or switch.
‘-' Supply terminal and 'M4 GND screw on rear of module' must be connected to EARTH /
GROUND as close as practical to the unit.
Module Power Supply -Ve terminal is not Isolated from Earth/GND
DIO channel can be wired as either input or output.
Care must be taken with antenna selection and proximity to the radio.
For short distance paths, RX signal level should be checked and if it exceeds -40dBm a 20dB
attenuator must be fitted in line with coax cable.
Demo Antennas must not be used for final installation.
The non-metallic cover of the Wireless Ethernet Modem is considered to constitute an
electrostatic discharge hazard. Clean only with a damp cloth
The Wireless Ethernet Modem enclosure contains aluminum and is considered to constitute a
potential risk of ignition by impact or friction and must be taken into account during installation.
If the Wireless Ethernet Modem is installed as Category 3 equipment, then it shall be installed
in an Enclosure which maintains an ingress protection rating of IP54 and meets the enclosure
requirements of EN 50014 or EN60079-0.
If installed in a hazardous environment coaxial cable shall be installed in a metallic conduit as
per NEC requirements
2A Fuse or
Circuit Breaker
Digital Output Wiring
PC’s
RD 2
TD 3
2
SG 5
7
RTS
8
CTS
6
DSR
4
DTR
1
DCD
5
MODEM
DB9
MALE
3
7
8
6
4
1
* Connect to Ground as
RD
close as possible to the
module.
TD
SG
MODULE
RTS
CTS
DSR
DIO
DTR
COM
DCD
DCE HOST
DB9
FEMALE
PC’s, Dataloggers
RD
2
2
TD
3
3
SG
5
5
7
7
8
8
6
6
4
4
1
1
RTS
CTS
DSR
DTR
DCD
RD
*
RS485 Connections
TD
SG
RTS
HOST
HOST
CTS
DC Load,
eg Relay
DSR
*
DTR
DCD
MODEM
DCE HOST
DB9
MALE
DB9
MALE
+
-
+
PROVIDE GOOD GROUND
CONNECTION TO MAST, MODULE
AND SURGE ARRESTOR
Max
30VDC
0.5A
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOWN TO BE FREE OF IGNITABLE CONCENTRATIONS.
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
Installation Guide
REV 1.9
WI-MOD-945-E Wireless Ethernet
December 2011
-
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