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