Hardware manual

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1. Overview

WE500R is a redundant, autonomous and high performance Dual Modem 3G + 2G wireless solution specifically designed for the ICT and broadcasting industry for remote monitoring, control and data logging.

It is a full-featured device with capabilities that range from a built-in web server to VPN and UPS.


2. Technical characteristics

Characteristic Description
CPU CPU ARM9 AT91SAM9260 @ 210MHz
RAM 64 MBytes
Flash 1 GByte NAND
Operating System Linux 2.6
Ethernet 10/100 Mbit/s
Dual Modem 3G + 2G

3G

14.4Mbps downlink / 5.76Mbps uplink (HSPA)

Quad band HSDPA/HSUPA

2G

Quad band GSM/GPRS

Communications

1 RS232 serial port

1 RS485 serial port

WiFi (optional)

USB host (optional)

Digital inputs 6 inputs, non isolated, dry contact
Analog inputs 2 inputs, non isolated, 0-5V, 0-10V, 0..20mA (configurable for 4..20 mA), NTC 10K
Digital outpus 2 relays, 1A 30VDC/1A 230VAC
Power source 230 VAC, 50Hz
UPS Characteristic Description
Input voltage (nominal) 195-265 Vac / 50 Hz
Output current (nominal) 0.6 A
Efficiency 0.8
Frequency 100 Khz
Isolation 3000 Vac
Batteries Set of 10 NiMh 2100 Mah
Protection Electronic (shot-circuit, overload and thermal)
Average absorption 150 mA RMS
Peak absorption 300 mA RMS
Dimensions (L x W x H) 480 x 180 x 45 mm
Weight 2400 gr
Box Alluminium, 1U rack mountable
Storage temperature -25 °C - +85 °C
Working temperature -10 °C - +60 °C
Humidity 5% - 95% (non condensing)

Warning

If the analog inputs are 0..20 mA, they can be used in the 4..20 mA by simply setting an offset when configuring the analog input.


3. Connections

3.1. Back panel

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Connector 1 Description
RL1A Relay 1
RL1B Relay 1
RL2A Relay 2
RL2B Relay 2
Connector 2 Description
GND Digital inputs ground
DI1 Digital input 1
DI2 Digital input 2
DI3 Digital input 3
DI4 Digital input 4
DI5 Digital input 5
DI6 Digital input 6
GND Analog inputs ground
AN1 Analog input 1
GND Analog inputs ground
AN2 Analog input 2

3.1.1. Electrical characteristics

Characteristic Description
Power source 230 VAC
Analog inputs

Factory configured non isolated Analog Inputs.

Admissible input range:

  • 0 – 5 V
  • 0 – 10 V
  • 0..20 mA (4..20 mA configurable via software)
  • NTC 10K
Digital inputs Dry contact, non isolated, low tension Digital Input
Digital outputs (Relays) Relay load: 1A 30VDC/1A 230VAC

Danger

The digital inputs/outputs were design to operate at low tensions, avoid to connect them directly to the 230VAC network.

3.2. Front panel

../_images/we500r_connections_front.png ../_images/we500r_serigrafia.png
LED Description
BATTERY

Battery activity

Turned on when the device is powered by the battery

CHARGE

Power charge activity

Turned on when the battery is charging

POWER Power source. It’s always turned on
DATA

HSPA/GPRS connection

Turned on when the HSPA/GPRS data connection is active

MODEM 3G

3G modem activity

Turned on when the modem is active, even if there is no data connection active.

MODEM 2G

2G modem activity

Turned on when the modem is active, even if there is no data connection active.

BUS

Modbus activity

Turned on means the system is working properly.

Blinking means modbus read/write operations.

RUN

Main processes activity

Turned on means the system is working properly.

Blinking means there is a critical system failure.


4. Installation

This chapter describes the installation procedure and first device start up.

In order to have a normal operating device, it is necessary to have at least one SIM card that allows to establish an HSPA/GPRS data connections. Please check the carrier’s data planning for prices and costs of the service.

Verify that the device is installed in a physical position in which it receives sufficient 2G/3G network coverage.

In case that 2 SIM cards are used, the policy that decides how to used them can be chosen later through the web interface.

Note

The device has been tested and verified with SIM cards of the major European carriers such as Vodafone (Italy), T-Mobile (Germany) and O2 (Ireland). It has also been used with SIM cards of carriers in different parts of the world such as Africa and Asia. However, there is no warranty that it will work with all the existent SIM cards in the market. Please contact Nethix for further information.

4.1. SIM cards and connections

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  • Insert the SIM cards in the WE500R as the image shows. The SIM cards contacts must face down.

Warning

Avoid to insert the SIM cards when the device is turned on. After turning off the device and removing the power source, the SIM cards can be inserted/removed.

  • Prepare the input and output connections in the pluggable screw terminals as required by the application.
  • If required, connect the modbus cables using the serial interfaces RS232 and/or RS485.
  • Connect the quad band GSM antennas with the right cable and, if required, their extension, being sure to have a satisfactory GSM signal. Check the network coverage with any mobile phone.
  • Connect the power source cable an switch-on the power button.

Warning

The digital inputs are not galvanic isolated, they have an internal pull-up and are activated by closing the circuit with GND through a dry contact.

Warning

The analog inputs are not galvanic isolated. If necessary, for avoiding interference, analogical isolators can be placed externally.

4.2. System start-up

  1. The POWER LED will turn on when the WE500R is connected to the power source. The CHARGE LED will turn on if the battery is charging.
  2. After ~40 seconds, the RUN and BUS LEDs will turn on. At this point all the application and services will be active. The monitoring, control and logging applications will be running and the web interface will be reachable.
  3. After ~30 seconds of step 2, the HSPA/GPRS service will become active and the GPRS LED will turn on. The services that depend on this connection such as VPN, data delivery to a portal and email will be active.

The initial WE500R configuration must take place locally in one of the two following modes:

  • Point-to-point connection between the PC and the WE500R using a normal or cross Ethernet RJ-45 cable:
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  • LAN wired connection through a switch or hub:
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The default network configuration of the WE500R is the following:

Parameter Value
IP address 192.168.1.160
Netmask 25.255.255.0
Gateway 192.168.1.1
DNS 8.8.8.8

4.3. Logging in the web interface

In order to establish a connection enter the IP address of the device in the browser’s URL:

http://192.168.1.160

The default credentials are:

Username Password
admin admin

Hint

It’s strongly recommended to change the default password after the first login.

It’s necessary that the PC belongs to the same subnet of the device. In this case the private network 192.168.1.X. For connecting to the WE500R a standard Internet browser is needed. No drivers or specific software are required.

The recommended browsers that were also used for validating the web-interface are Firefox and Chrome. However, other browsers are known to work properly.

Later access to the web interface can take place through different channels assuming that the device is properly configured:

  • LAN
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  • ADSL
../_images/connectivity_adsl11.png
  • WLAN
../_images/connectivity_wifi1.png
  • HSPA/GPRS
../_images/connectivity_3g11.png
  • VPN

The VPN can use any of the above channels to establish a secure connection between the WE500R and the PC. It needs a client software in the PC and a server that provides the service such as the Nethix Portal.

5. Power off and reboot

Rebooting the WE500R can be done in two ways:

  1. Software: Using the proper icon at the right top of the web interface. Only an administrator can reboot the device.
  2. Hardware: Pressing for 10 seconds the power button in the front panel display.

Powering off the WE500R can be done in two ways:

  1. Software: Using the proper icon at the right top of the web interface. Only an administrator can power off the device.
  2. Hardware: Using the Stand-by mode described later.

Danger

Assuming that the battery is completely discharged, powering off the device by removing unexpectedly the power source could cause data loss or corruption.

6. Stand-by mode

The Stand-by functionality turns off all the system applications, such as the web server and the variables monitoring, setting the system to a low power consumption state.

Warning

This functionality must be always used before removing the power source from the device. Not doing so, could cause data loss or corruption if the battery is completely discharged.

6.1. Entering the Stand-by mode

For entering the Stand-by mode, press the front panel button and leave it pressed for approximately three seconds. During this time, the power LED will blink fast, then all the LEDs will blink together indicating that the system will enter the Stand-by mode

When the LEDs start blinking together fast, release the button immediately.

The power LED will turn-on again for several seconds and start blinking again slowly, approximately once every two seconds, indicating that the system has entered the Stand-by mode and that is in a low power consumption state.

The whole procedure takes approximately fifteen seconds.

Warning

Notice that leaving the front panel button pressed after all LEDs blink three times starts the network recovery procedure.

6.2. Leaving the Stand-by mode

When in Stand-by mode, the power LED blinks slowly, approximately once every two seconds. Press the front panel button and leave it pressed for approximately three seconds. The power LED will start blinking fast for approximately three seconds, then it will remain turned-on. At this point the button can be released and the system will start-up normally.

7. Network recovery

For executing a Network Recovery, press the front panel button and leave it pressed for approximately six seconds. During this time the following actions will be executed twice:

Warning

Notice that leaving the front panel button pressed for more than six seconds will reboot the device.

  • The power LED will blink fast for approximately 3 seconds
  • Then, all the LEDs will blink together three times

After these six seconds, the power LED will turn-on and start blinking again slowly, approximately once every two seconds, indicating that the network recovery has been executed and the system is in Stand-by mode.

Execute the procedure for leaving the Stand-by mode for booting the device normally.

This is the default network configuration after the Network Recovery:

Parameter Value
IP address 192.168.1.160
Netmask 25.255.255.0
Gateway 192.168.1.1

Warning

Notice that the Network Recovery procedure is applied only to the Ethernet interface and not to the Wi-Fi or GPRS/HSPA interfaces.