COAXIAL CABLE
GROUND
CONNECTION TO
MAST, MODULE
AND SURGE
ARRESTOR
905U-E PROVIDE GOOD
TX/RX
GROUND Connection
on rear of Module
M4 x5mm
SURGE
ARRESTOR
(OPTIONAL)
WEATHERPROOF
CONNECTORS WITH
“3M 23” TAPE
30cm minimum
IF GROUND CONDITIONS
ARE POOR, INSTALL MORE
THAN ONE STAKE
EARTH STAKE
INSTALL ANTENNA ABOVE
LOCAL OBSTRUCTIONS FOR
MAXIMUM RADIO DISTANCE
MAST
STRESS RELIEF LOOP
COLINEAR
ANTENNA
Antenna Installation
EXPLOSION HAZARD
DO NOT DISCONNECT WHILE
CIRCUIT IS LIVE UNLESS
AREA IS KNOWN TO BE NON
HAZARDOUS
FCC: Unlicensed operation limits the radio
power. High gain aerials may only be
used to compensate for cable losses.
Statutory Requirements
Installation Guide
905U-E
WARNING !
2
3
5
7
8
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
DTE HOST
DB9
FEMALE
2
3
5
7
8
6
4
1
2
3
5
7
8
905U-D
DB9
MALE
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
DCE HOST
DB9
MALE
2
3
5
7
8
6
4
1
PLC’s, Dataloggers
905U-D
DB9
MALE
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
PC’s
RS232 Connections
1.
2.
3.
4.
RJ-45
Ethernet
Connection
Connect “-”terminal to
GROUND for surge protection
Factory
Default
Switch
_
+
HOST
B
NOTE:
A
905U-E
+
RS-485
Resistor
Terminator
Switch
COM DIO
+
©ELPRO Technologies Pty. Ltd. 2008 Rev. 1.3
DC Supply
-
COM DIO
Digital Output
Max 30VDC,
500mA
DC Relay Supply
Digital Input/ Output
Digital Input
Voltage Free
Contact
OR
Transistor
Device
10 – 30VDC
-
All connections to be SELV
DIO channels can be wired as either inputs or outputs.
Ethernet Port wiring is that of a hub or switch.
Connect “-” terminal to GROUND for surge protection
HOST
RS485 Connection
905U-E Wiring