ELPRO | 245U-E | ELPRO TECHNOLOGIES

245U-E Wireless Ethernet Range
Product Overview
The ELPRO 245U-E range forms part of ELPRO’s industrial wireless
Ethernet product series, providing reliable and secure distance
communication solutions.
Comprising the 245U-E-G (2.4GHz, 400mW) and the 245U-E-A
(5GHz, 400mW), the new 245U-E products provide up to 108Mbps,
encrypted, repeatable, meshed Ethernet connectivity to link
industrial process and automation applications.
ELPRO
TECHNOLOGIES
Industrial Wireless Technology
Features and Benefits
• 802.11 a, b, g (2.412 - 2.472GHz: 5.18 – 5.825GHz) option availability
• 108Mbps for large data transfer applications (108Mbps turbo mode)
• Configurable transmit power (15mW – 400mW) for superior radio range
Applications
• Monitoring, control and reporting for:
• WDS (AP - AP) multi-hop repeater function to extend radio coverage
-Oil /Gas field production /distribution
• Spanning Tree functionality enabling self healing of network
-Mine vehicle diagnostics
• Bridge /Router, Access Point /Client in one reducing inventory costs
-Traffic management
• Serial client /server /multicast functionality (point-point; point-multipoint)
-Water /Waste water to SCADA
• Modbus TCP to Modbus RTU Gateway /Modbus Master for I/O transfer
-PLC - PLC - SCADA/DCS connection
• Hardware encryption ensuring no reduction in data throughput
-Serial field devices to LAN (serial server)
• Security to WPA2 PSK /802.11i - 802.1x military grade encryption
• Video surveillance /monitoring
• MAC address and IP filtering to reduce unnecessary network traffic
• Linking process /automation networks.
• Online diagnostics and configuration throughout the network
• Lifetime Warranty and Global Technical Support.
Technologies
Understanding Practical Ethernet Commissioning
When choosing which type of industrial wireless Ethernet to commission for
your application, several aspects should be considered...
Which Wireless Ethernet Is Right For My Application?
There are several factors which should be considered when
choosing which industrial wireless Ethernet is right for your
application: of course country specific regulatory requirements
are foremost.
With the overhead and communication frames of the 802.11
standard, shared channels can create an RF environment
which can be heavily congested when multiple 2.4 GHz
systems are within hearing/receiving range of each other.
1 Turbo Channel (40MHz: 108Mbps)
1
Reliable Communications Distance
2.412
Reliable wireless Ethernet communications is fundamentally
determined by a few key factors: the amount of Radio
Frequency (RF) power emitted from the antenna (government
regulated), the lowest level that the receiving module can
reliably demodulate (ie receiver sensitivity) and the frequency
waveform properties relative to the terrain over the distance
required of the application.
Alternative products RF power and receiver sensitivity are fixed
in manufacturing. When choosing a wireless product, care
should be taken to compare the amount of RF power and the
receiver sensitivity of alternate product options.
3
2.422
4
2.427
5
2.432
6
7
2.437 2.442
8
2.447
9
2.452
10
2.457
11
2.462
12
2.467
Radio signals are transmitted between the sending and
receiving units. The radiated radio signals form an elliptical
path of concentric circles known as a Fresnel zone. The radio
path may be described as either obstructed or line of sight.
It is the level of obstruction relative to the frequency waveform
and its Fresnel zone that determines the success level of
communications. Higher frequencies such as 2.4 and 5GHz
have smaller waveforms and can be susceptible to obstructed
paths. 2.4GHz waveforms are relatively less susceptible due
their bigger size but may suffer from congestion in the 2.4GHz
spectrum.
Fresnel Zone
Receiver
Sensitivity
13 14 *
2.472
2.484 *
* Channel
* Center Frequency (GHz)
Image shows 2.4 GHz shared channels; 1, 6 and 11 are non-overlapping.
The 802.11 5GHz Spectrum
The IEEE 802.11a (5 GHz) standard specifies, country
regulation dependent, up to 24 non-overlapping channels.
There also can be additional radiated power (ie EIRP) from the
antenna allowing greater distance Ethernet communications.
2 Turbo Channels
(40MHz: 108Mbps)
1 Turbo Channel
(40MHz: 108Mbps)
Frequency and Terrain
RF Power
2
2.417
36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165 *
5.18
5.20
5.22
5.24
5.26
5.28
5.30
5.32
5.50
5.52
5.54
5.56
20MHz
5.58
5.60
5.62
5.64
5.66
5.68
5.70
5.745 5.765 5.785 5.805 5.825 *
* Channel
* Center Frequency (GHz)
Image shows 5 GHz spectrum with up to 24 non-overlapping channels.
Data Rate Throughput and Modulation
The IEEE 802.11 standard has ratified four modulation
techniques since 2007 including: 802.11 a, b, g and n.
Standard
Frequency
Data Rate
802.11b
2.4 GHz
1-11 Mbps
802.11g
2.4 GHz
6-54 Mbps
802.11a
5.0 GHz
6-54 Mbps
802.11n
2.4 GHz
6-200+ Mbps
Terrain
Distance
Image demonstrates the Fresnel zone between two antennas over the
distance required of the application. It is the amount of obstruction relative to
the waveform Fresnel zone (and other factors) that determines success.
What causes congestion in the 2.4GHz band?
The IEEE 802.11 standard specifies the number/separation of
channels in the 2.4 and 5 GHz spectrums. Country regulations
dependent, the 2.4 GHz 802.11b/g IEEE standard uses up to 14
channels with only three non-overlapping channels (1, 6, 11).
The respective modulation techniques range from single to
multi-spatial dimensional transmissions; particularly 802.11n
which requires multiple antenna arrays. The 802.11 a, g
standards allow for data throughputs to 108Mbps in turbo
mode. However these standards do not use the antenna arrays
of 802.11 n and are therefore more readily commissioned over
distance applications.
In summary the above considerations should be taken into
account when deploying industrial wireless Ethernet in your
application.
245U-E System Design Advantages
The 245U-E range is feature rich allowing end users to create complex, reliable
engineering solutions for process and automation systems.
Access Point Repeating and Serial Server
WDS, Modbus Master - Slave, DHCP
System advantages of the 245U-E range includes serial
client /server /multicast (RJ-45 to simultaneous RS232/485)
connections with online diagnostics and configuration
capability. The units can provide standalone Modbus
Master-Slave functionality within the network and additional
modules readily added to the system with DHCP automatic IP
addressing capability.
AP
(Modbus Master)
AP
Client
Field
Devices
LAN
RS232
Client
(Modbus Slaves)
AP
In the diagram top right, the LAN is connected serially to the
field devices via an AP using serial server capability. A Modbus
Master AP also polls Modbus slave I/O (A>B).
RS485
(Automatic
IP address
via DHCP)
Modbus
slave I/O B
Modbus
slave I/O A
Access Point Repeating with Self Healing of Network
WDS and Self Heal Mesh
Using WDS (AP-AP) and Spanning Tree (self-healing) features
of the 245U-E allows distance linkage in bridge /router modes
and preservation of system communications in the event of a
site outage.
AP
In the diagram bottom right, LAN’s A and B are connected by
the middle AP. Loss of power (site outage) to the middle AP
creates a communications failure but traffic is automatically
diverted through redundant AP modem to LAN B.
(Site Outage)
LAN A
AP
Modbus slave
Data Logger
Client
LAN B
AP
Product comparison and ordering guide (includes existing 240U-E, 945U-E and 905/805U-E products)
245U-E-G
245U-E-A
945U-E
(1)
Frequency
2.412 - 2.472GHz
5.18 - 5.825GHz
902-928MHz
Modulation
802.11b/g
802.11a
802.11 g
(2)
(2)
240U-E
(1)
905U-E
805U-E
(1)
2.412 - 2.462GHz 902 - 928MHz
869MHz (1)
802.11b
802.11- FF(4)
802.11-FHSS
(2)
10,100 - 500mW(3)
TX Power
15 - 400mW
15 - 400mW
15 - 630mW
100 /300mW
100mW - 1W
Data Rate
108Mbps
108Mbps
54Mbps
11Mbps
200Kbps
72Kbps
WDS (AP-AP)
Yes
Yes
Yes
Yes
No
No
Self Heal
Yes
Yes
Yes
Yes
Yes
Yes
Serial Client /Server /Multicast
Yes
Yes
Yes
Yes
Yes
Yes
Encryption Security Level
(Maximum level highlighted)
WPA2 /802.11i
WPA2 /802.11i
WPA2/802.11i
WPA - PSK (TKIP
/ AES 128 bit)
128 bit AES
Encryption
128 bit AES
Encryption
MAC / IP Filtering
Yes
Yes
Yes
Yes
Yes
Yes
Network Function
AP /Client
Bridge /Router
AP /Client
Bridge /Router
AP /Client
Bridge /Router
AP /Client
Bridge /Router
AP /Client
Bridge /Router
AP /Client
Bridge /Router
Online Diagnostics
Yes
Yes
Yes
Yes
Yes
Yes
Online Configuration
Yes
Yes
Yes
Yes
Yes
Yes
(Spanning Tree)
Footnote:
(1) Frequency availability - country regulatory dependant.
(2) Configurable TX Power option available - country regulations apply.
(3) Model dependant relative to regulatory guidelines.
(4) Fixed Frequency (FF).
245U-E Wireless Ethernet Range
ELPRO Technologies is an ISO 9001:2008
Range Specifications
Wireless Specifications
Quality Assured Company.
Diagnostics Indication
Frequency band
‘Auto mode’ determines fastest rate, relative to signal strength.
•
245U-E-G
2.412 - 2.472GHz
1 - 108 Mbps (Configurable)
•
245U-E-A
5.18 - 5.825GHz
6 - 108 Mbps (Configurable)
Receiver sensitivity
•
245U-E-G
97dBm @ 1Mbps - 74dBm @ 108Mbps (8% FER)
•
245U-E-A
94dBm @ 6Mbps - 74dBm @ 108Mbps (8% FER)
Diagnostics/ LED
Power /OK; RX; TX /Link; RS232; LAN; RS485; Digital I/O
status
Reported diagnostics
RSSI measurement in dBm;
Connectivity information / statistics; System Log file
Ethernet Port
Link /100Mbps
Ethernet Port
Channel Spacing
*country regulation dependant
Standard
•
245U-E-G
5MHz spacing (13 channels, 2.412 - 2.472GHz - see above*)
Serial Port
•
245U-E-A
20MHz spacing (27 channels, 5.150 - 5.8GHz - see above *)
RS232
DB9 female DCE ; RTS /CTS /DTR /DCD
(hardware signals provided)
Transmit Power
10 /100 BaseT; RJ45 - IEEE 802.3
•
245U-E-G
1-24 Mbps: 400mW (+26 dBm) - 108 Mbps: 125mW (+21 dBm)
RS485
2 pin terminal block (max distance 4000’/1.2km -non-isolated)
•
245U-E-A
6-24 Mbps: 400mW (+26 dBm) - 108 Mbps: 125mW (+21 dBm)
Data rate (bps)
configurable
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 76800,
115200, 230400. 7 or 8 data bits, Stop /start /parity bits.
Line of sight range
(Range extendable using WDS: AP - AP)
•
802.11 b/g - 1.6miles/2km @ 100mW EIRP (Europe)
245U-E-G
General
Compliances
802.11 b/g - 6miles/10km @ 4W EIRP (Americas/Australia)
245U-E-A
802.11a - 1.8miles/3km @ 500mW EIRP (Europe)
•
EMC
EN 301 489 - 17; FCC Part 15
(DFS dependant)
802.11a - 3miles/5km @ 1W EIRP (Americas/Australia)
•
Radio
EN 300 328 ; FCC Part 15.247, RSS 210
Antenna connector
2 x Female SMA standard polarity
(Signal diversity or high gain receive antenna)
(Surge diverter, use CSD-N-600 with CCTAIL-SMA-M)
•
CSA
Class I, Division 2 (pending)
•
Safety
EN 60950 (RoHS compliant)
Size
4.5 x 5.5 x 1.2 in. /114 x 140 x 30 mm
Housing
Powder-coated, extruded aluminum
Mount
DIN rail
Terminal blocks
Removable; Max 12 gauge (2.5mm2)
Temperature
-40 to +60 °C ; -40 to +140 °F
Bandwidth Protection
• MAC Address
Whitelist/Blacklist
• IP Filtering
Whitelist/Blacklist
• ARP Filtering
Whitelist/Blacklist
Humidity
0 – 99% RH non-condensing
Weight
<1lb /0.5kg
Nominal supply
9 to 30VDC; under /over voltage protection
Configurable
Average current draw
Idle 12V - 270mA; Idle 24V - 140mA
System Configuration Parameters
System address
(ESSID) 1 - 31 character text string
Security
•
Data encryption 64 /128 bit WEP - WPA2 PSK - 802.11i - 802.1x
•
Password
https accessibility
Power Supply
Access Point or Client/ Bridge or Router Broadcast or
Control Mode - Point to Point, Point to Multipoint
WDS Wireless Distribution System: AP - AP repeater functionality
Modbus TCP /RTU Gateway
Serial client /server /multicast (simultaneous RS232 /485
connections)
On-board Modbus Master for I/O transfer
Protocols supported
TCP /IP, UDP, ARP, SNMP, RADIUS /802.1X, DHCP,
DNS, PPP, ICMP, HTTP, FTP, TFTP, TELNET
User Configuration
Embedded web page default URL
Transmit current draw Full TX (400mW) 12V - 470mA;
Full TX (400mW) 24V - 250mA
Note: Specifications subject to change.
Ordering Information
Order Code Description
Frequency
RF Power
245U-E-G
Ethernet 802.11b,g 400mW, 2.4GHz
2.4GHz DSSS
400mW
Discrete I/O
245U-E-A
Ethernet 802.11a, 400mW, 5GHz
5GHz DSSS
400mW
Input voltage-free contact /output FET 30VDC 500mA.
(Used to transfer input /output status or communications failure output).
Note: Specifications subject to change; specify country of application on ordering.
• RF power and frequency subject to country regulatory requirements.
THINK WIRELESS... THINK ELPRO
Technologies
Contact ELPRO
Regional Offices:
Web site www.elprotech.com
E-mail sales@elprotech.com
Americas
+ 1 619 741 3574
Australasia
+ 61 7 3352 8600
Technical Support:
Singapore
+ 65 6487 7887
USA/Canada
+1 866 713 4409
Other countries +61 7 3352 8624
Europe
+ 44 1582 723633
China
+ 86 01085625718-868
YOUR LOCAL PARTNER:
elp_bro_245U-E_V.2.0
•
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