© Elpro Technologies.
inst_Elpro_915U-2_1.5.vsd
FCC Notice
B
This device complies with Part 15.247 of the FCC Rules.
Operation is subject to the following two conditions:
1) This device may not cause harmful interference and
2) This device must accept any interference received, including interference
that may cause undesired operation
A
-
EXPANSION
+
100M
GND
LINK
ETHERNET
USB
Screw terminal to
EARTH for surge
protection
BAT SUP SUP
+
+
RS232
Enclosure
Chassis
Protective
Surge Earth
SUPPLY
Antenna Installation
1 Wavelength
minimum
Wavelengths
150 MHz 200 cm
450 MHz 66 cm
900 MHz = 33 cm
2.4 GHz = 13 cm
5 GHz = 6 cm
RJ-45 Ethernet
Connection
COLINEAR
ANTENNA
PWR
WEATHERPROOF
CONNECTORS WITH “3M
23” TAPE
SURGE
ARRESTOR
(OPTIONAL)
15-30V
DC Supply
RS232 Serial Port
_
COAXIAL CABLE
0
STRESS RELIEF LOOP
RF
232
485
+
D1
PWR
RF
232
D2
D3
D4
D5
D6
D7
D8
+
AI 1
+
AI2
AI4
AO1
+
WARNING - EXPLOSION HAZARD
115S- XX
B A - +
B A - +
B A - +
All connections must be SELV (Safety Extra Low Voltage <50V AC & <120V DC)
Ethernet Port wiring is that of a hub or switch.
EARTH terminal on end plate of module for surge protection.
DIO channels can be wired as either inputs or outputs.
NOTE: “GND” and “SUP -“ terminals are connected internally to the EARTH terminal
AO1 AO2
+
+ GND +24V
115S- XX
AI4
915U-2 MODULES ARE SHIPPED FROM THE FACTORY AS MESHING RADIOS,
FOR WIBNET COMPATIBILITY MODE IT WILL BE NEED TO BE ENABLED IN
CONFIGURATION.
915U-2
AI3
NOTES
AI2
-
Expansion I/O Power and
RS485 serial connection
Description
AI3 Current/Voltage
AI3 Current/Voltage
AI4 Current/Voltage
AI4 Current/Voltage
Unused
Default Config Enable
AI2
+
DO NOT DISCONNECT CIRCUITS WHILE LIVE, UNLESS AREA IS A KNOWN TO
BE NON- HAZARDOUS
DIP
1
2
3
4
5
6
AI 1 AI 1
+
-
Side Access Panel Dip Switches
D8 GND +24V
For I/O Connections
see Sheet 2
D7
EARTH terminal on
bottom of module
Abbrev DB9
DTR
4
GND
5
RXD
2
TXD
3
D6
AO2
+ COM +24V
IF GROUND CONDITIONS ARE
POOR, INSTALL MORE THAN
ONE STAKE
Signal name
Data Terminal Ready
Signal Common
Receive Data
Transmit Data
D5
AI3
915U-2
RJ-45
3
4
5
6
D4
COM +24V
PROVIDE GOOD GROUND
CONNECTION TO MAST, MODULE
AND SURGE ARRESTOR
INSTALL ANTENNA ABOVE
LOCAL OBSTRUCTIONS FOR
MAXIMUM RADIO DISTANCE
D3
External battery
if required
D1
MODULE
D2
MAST
485
ON
ELPRO
1 2 3 4 5 6
915U-2
© Elpro Technologies.
inst_Elpro_915U-2_1.5.vsd
FCC Statutory Requirement
Unlicensed operation limits the radio power. High gain aerials may only be used to compensate for cable losses.
Differential Current Inputs (AI1&2)
Digital Input
TTL CMOS
Output
915U-2
V+
915U-2
Single Ended Current Input (AI3&4)
Loop
Powered
Sensor
Externally powered
sensor
DIO1
ALS +24V
ALS +24V
ON
+
1
mA
AIN1+
+
Power
supply
DIO2
915U-2
Voltage Free Contact
V-
_
mA
-
Digital Output
GND
Externally
powered
sensor
V-
Analog Output
ALS +24V
ALS +24V
AIN1+
V
DIO1
AOT1
AI
AOT2
COM
0-25V
Sensor
-
Single Ended Voltage
Input (AI3&4)
+
+
Differential Voltage
Inputs (AI1&2)
AIN1-
DC Load
Max 30VDC 0.2A
V-
915U-2
+
DIO2
GND
Single Ended Voltage Input
915U-2
915U-2
6
+
GND
Power
supply
AIN2-
+
5
AIN4
AIN2+
Loop
powered
sensor
4
AIN3
AIN1DIO3
Transistor
Switch Device
3
Dip Switch setting
for Current I/P
-
_
2
AIN3
PLC
0-5VDC
Sensor
AIN4
+
_
V-
ON
V
GND
-
V-
1
-
2
3
4
5
6
Dip Switch setting
for Voltage I/P
GND
GND
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT CIRCUITS WHILE LIVE, UNLESS AREA IS A KNOWN TO BE NON- HAZARDOUS
V-