905U-D Wireless Serial Modem
RS232/RS485 Serial Data Networking
Applications
• Oil/Gas Field Production/Distribution
• Water/Waste Water to SCADA
• Electrical Metering/Consumption
• Serial Transducer Devices to
SCADA/HMI
• Serial Datalogger Connectivity
• PLC to PLC to SCADA/DCS
Connection
• Conveyor Belt Header Drums
• Notification Panels And Sirens
Specifications
Transmitter/Receiver
Description
The ELPRO 905U-D Wireless Serial Modem is a robust, license-free
serial transceiver capable of long range communications to 32km/20mile.
Operating at 900MHz and up to 1W, the ELPRO 905U-D provides high
speed RS232 and RS485 connectivity up to 115kbps, which provides
robust and secure two-way wireless serial communications in challenging
environments typical of industrial monitoring and control applications.
Capable of high speed communications with serial devices, the ELPRO
905U-D can communicate using either transparent broadcast mode or a
controlled addressed mode. Both offer node to node, node to multi-node and
repeatability for greater range. Integrated forward error correction maximizes
bit error rate providing greater transmission reliability and configurable DTR
controlled low power mode on the RS232 port aids reduction of overall
power consumption. The modem is hazardous area approved delivering
strong resistance in harsh industrial environments.
Features
• 902 - 928MHz Frequency up to 1W RF Power
• Frequency Hopping Spread Spectrum to 115.2kbps
• 50 x 250kHz Channel Spacing
• High Speed RS232 and RS485 Data Rate to 115kbps
• Transparent/Simultaneous Broadcast and Addressable Device Messaging
• LOS Distance to 32kms (20miles) in a Single Hop - Unlimited Repeatability
• Low Power Consumption Mode with DTR Control
• Forward Error Correction Communications (CRC Error Checking with ARQ)
• Simplistic Configuration for AT Hayes Commands or Windows Software
• Helpful Diagnostics Include Radio Signal Strength and BER Indication
Frequency
902 - 928MHz(1), 915 - 928MHz(2)
Transmit Power
1W
Transmission
Frequency Hopping Spread Spectrum (FHSS)
Modulation
Frequency Shift Keying
Receiver Sensitivity
-106dBm @ 19.2kbps, -103dBm @ 115.2kbps (1% FER)
Channel Spacing
50 x 250kHz
Data Rate
19.2 - 115.2kbps(1,2)
Range (LOS)
32kms (20miles) @ 4W(3)
Antenna Connector
1 x Female SMA Standard Polarity
RS232
DB9 Female DCE; RTS/CTS/DTR/DCD
(Hardware Signals Provided)
RS485
2-Pin Terminal Block
(Max Distance 1.2km (4000’) - Non Isolated)
Data Rate (Bps)
1.2kbps to 115.2kbps configurable
Serial Settings
7 or 8 Data Bits, Stop/Start/Parity Bits Configurable
Serial Port
Note: Specifications subject to change.
1) Configured for USA
2) Configured for Australia
3) Typical Maximum Line Of Sight Range
Continued on back.
©2012 Cooper Bussmann
www.cooperbussmann.com/wireless
0612
BU-SB11848
Page 1 of 2
Data Sheet # 7917
905U-D Wireless Serial Modem
RS232/RS485 Serial Data Networking
Specifications
Protocols and Configuration
Ordering
To order, select product code from the table and specify country of application.
System Address
Configurable 8 Bit Value (0 - 255)
Product Code
Description
Frequency
RF Power
Protocols Supported
Operating Mode, Radio and Serial Settings
905U-D-900-1W-US
UHF Serial RS232/485, 115.2kbps
902 - 928MHz
1W
User Configuration
Windows Software or AT Hayes Commands Via Serial Port
905U-D-900-1W-AU
UHF Serial RS232/485, 115.2kbps
915 - 928MHz
1W
LED Indication/Diagnostics
Note: Available RF power and frequency may vary depending on country of application.
LED Indicators
Power/OK, Radio TX/RX, Serial TX/RX, DCD
Reported Diagnostics
RSSI Measurement (dBm), Bit Error Ratio (BER)
Compliance
EMC
FCC Part 15 Class A
RF (Radio)
AS/NZS 4268, FCC 15.247
Hazardous Area
CSA Class I Division 2
Safety
AS/NZS 60950, IEC 60950
General
Accessories
The following accessories can assist with compatibility when commissioning.
Product Code
Description
Data
Sheet #
Antennas - 900MHz
DG900-1
Whip Antenna - SMA Male, angle bracket, -2dBi gain,
1m (3’) coaxial cable
7972
WH900-SMA
Whip Antenna - SMA Male, -2dBi gain
7974
CFD890EL
Dipole Antenna - SMA Male, mounting bracket, 2dBi
gain, 5m (16’) Coaxial cable
7973
Size
114 x 168 x 30mm (4.5” x 6.7” x 1.2”)
Housing
Powder-Coated Aluminum
Mounting
DIN Rail
Terminal Blocks
Removable; Max conductor 14 AWG (2.5mm2)
SG900EL
Collinear Antenna - N-type Female, 5dBi gain
7980
Temperature Rating
-40 to +60°C (-40 to +140°F)
SG900-6
Collinear Antenna - N-type Female, 8dBi gain
7979
Humidity Rating
0 - 99%RH Non-Condensing
YU6-900
Yagi Antenna - N-type Female, 9dBi gain
7976
Weight
0.5kg (1.1lbs)
YU16-900
Yagi Antenna - N-type Female, 15dBi gain
7978
Power Supply
Nominal Supply
10 - 30Vdc; Under/Over Voltage Protection
Average Current Draw
70mA @ 12V (Idle), 50mA @ 24V (Idle)
Transmit Current Draw
350mA @ 12V (1W), 250mA @ 24V (1W)
Note: Specifications subject to change.
Cables
CC3/10/20-SMA
Coaxial Cable Kit - 3m (9.8’)/10m (32’)/20m (65’),
N-type to SMA
7932
7947
7948
CCTAIL-SMA-F/M
Coaxial Cable Tail - 600mm (24”), SMA to N-type
Female or Male
7951
SER-DB9
Serial RS232 Cable - DB9 male to DB9 female straight
through
7955
CSD-SMA-2500
SMA Surge Diverter for use with CC10/CC20-SMA
7959
CSD-N-6000
Coaxial Surge Diverter - Bulkhead N Female to N Female
7960
MA15/D/2/SI
Power Supply Surge Diverter - 110Vac/15A
7936
IOP32D
Signal Surge Diverter - 2 wire/4 wire
7961
Surge Diverters
Power Supplies
PS-DINAC-12DC-OK
DIN Rail Power Supply - 100 - 250Vac, 12Vdc/2.5A
7935
PS-DINAC-24DC-OK
DIN Rail Power Supply - 100 - 250Vac, 24Vdc/2A
7958
Mounting Brackets
BR-COL-KIT
Mounting Bracket Kit for Collinear Antenna
7933
BR-YAG-KIT
Mounting Bracket Kit for Yagi Antenna
7957
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of
any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.