RUT955 Powering Options: Difference between revisions

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RUT955 routers can be powered from a power socket or over an Ethernet port. Depending on your network architecture you can use the LAN1 port to power the device.
{{Template: networking_rutx_manual_powering_options_rut2_rut9
 
| name      = RUT955
[[Image:Powering options rut955.PNG]]
| series    = RUT9xx
 
| file_lan1 = Networking_rut955_manual_powering_options_lan1_v2.jpg
RUT955 routers can also be powered from a power socket and over Ethernet simultaneously. The power socket has higher priority meaning that the device will draw power from the power socket as long as it is available.
| size_lan1 = 400
 
}}
When a RUT955 device is switching from one power source to another it loses power for a fraction of a second and may reboot. The device will function correctly after the reboot.
 
{| class="wikitable"
|+
| style="width: 20px;"  | <b>Pin</b>
| style="width: 75px;"  | <b>Signal ID</b>
| style="width: 150px;" | <b>T568A Color</b>
| style="width: 150px;" | <b>T568B Color</b>
| style="width: 200px;" | <b>Pins on plug face (socket is reversed)</b>
|-
| 1
| TX+
| [[File:Poe white green stripe.png|75px]]<br />white/green stripe
| [[File:Poe white green stripe.png|75px]]<br />white/orange stripe
| rowspan="8" style="background: #F5F4F5;" | [[Image:Poe rj45 connector.png|350px]]
|-
| 2
| TX-
| [[File:Poe solid green.png|75px]]<br />green solid
| [[File:Poe solid orange.png|75px]]<br />orange solid
|-
| 3
| RX+
| [[File:Poe white orange stripe.png|75px]]<br />white/orange stripe
| [[File:Poe white green stripe.png|75px]]<br />white/green stripe
|-
| 4
|
| [[File:Poe solid blue.png|75px]]<br />blue solid
| [[File:Poe solid blue.png|75px]]<br />blue solid
|-
| 5
| 7 - 30 VDC
| [[File:Poe white blue stripe.png|75px]]<br />white/blue stripe 
| [[File:Poe white blue stripe.png|75px]]<br />white/blue stripe
|-
| 6
| RX-
| [[File:Poe solid orange.png|75px]]<br />orange solid
| [[File:Poe solid green.png|75px]]<br />green solid
|-
| 7
| GROUND
| [[File:Poe white brown stripe.png|75px]]<br />white/brown stripe
| [[File:Poe white brown stripe.png|75px]]<br />white/brown stripe
|-
| 8
| GROUND
| [[File:Poe solid brown.png|75px]]<br />brown solid
| [[File:Poe solid brown.png|75px]]<br />brown solid
|-
|}
 
* '''Additional notes'''
* Though the device can be powered over an Ethernet port it is not compliant with the IEEE 802.3af-2003 standard. Powering a RUT955 device from a IEEE 802.3af-2003 power supply will damage the device as it is not rated for input voltages of the PoE standard.
* When powering the device from an external power source other than the included power adapter, make sure to use the correct voltage and polarity to power the router. It is highly recommended to test the router separately before connecting other I/O devices or serial ports in order to avoid damage to your equipment if you are not using the included power adapter.

Latest revision as of 11:16, 9 April 2024

Main Page > EOL Products > RUT955 > RUT955 Manual > RUT955 Powering Options

This chapter contains information on powering options supported by RUT955 routers.

Power socket

The router has a 4 pin power socket and can be powered by a 9-30 VDC power supply unit (PSU). Refer to the image below for the power socket's pinout information:

Power socket pinout
No. Description Wire color
1 Power Red
2 Ground Black
3 I/O Green
4 I/O White
.

If you decide not to use the standard 9 VDC wall adapter and want to power the device from a higher voltage (15-30 VDC), please make sure that you choose a power supply of high quality. Some power supplies can produce voltage peaks significantly higher than the declared output voltage, especially during connection and disconnection.

While the device is designed to accept input voltage of up to 30 VDC peaks, high voltage power supplies can harm the device. If you want to use high voltage power supplies it is recommended to also use additional safety equipment to suppress voltage peaks from the power supply.

Passive PoE

The device may also be powered by an Ethernet cable via the LAN1 port:
(Do not use in other ports!)

  • The device is NOT COMPLIANT with the IEEE 802.3af-2003 standard: powering the device from an IEEE 802.3af-2003 power supply will damage the device as it is not rated for input voltages of the PoE standard.
  • The device is NOT COMPLIANT with the IEEE 802.3at standard: it cannot power other devices over Ethernet.

RJ45 pinout:
Pin 10/100 mode B, DC on spares T568A Color T568B Color Pins on plug face (socket is reversed)
1 TX+
white/green stripe
white/orange stripe
2 TX-
green solid
orange solid
3 RX+
white/orange stripe
white/green stripe
4 DC+ 9-30 VDC
blue solid
blue solid
5 DC+ 9-30 VDC
white/blue stripe
white/blue stripe
6 RX-
orange solid
green solid
7 DC-
white/brown stripe
white/brown stripe
8 DC-
brown solid
brown solid

Simultaneous powering

The router can be powered from a power socket and over Ethernet simultaneously. In this case, both PSUs should have similar output voltages. The power socket has higher priority meaning that the device will draw power from the power socket as long as it is available.

When the device is switching from one power source to another it loses power for a fraction of a second and may reboot. The device will function correctly after the reboot.

Ground loops

Do not connect the power supply negative terminal of our device to the chassis or earth exclusively.

This connection could cause ground loops. For example, if the antenna shield and power supply negative terminal are connected to the chassis or earth, it forms a ground loop, therefore unwanted current could flow through a device PCB ground and may cause damage.

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