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SBC Power Requirements

After installing the

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chassis in a rack and attaching necessary cables, you are now ready to install power and ground cables and apply power to the

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. The 

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is capable of dual redundant AC or DC power.

The standard 

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platform is shipped with one power supply. A second power supply may be added for redundancy at any time. Please contact your sales representative for more information.

Warning
Connect the chassis ground lug to the SBC chassis before connecting power.
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0	Table
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SBC 5400 Power Requirements

 

Note
This is estimated power consumption. All power measurements were taken with fans running at high speed.

Anchor
grounding_chassis grounding_chassis

Grounding

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Chassis

The following procedure explains how to ground the 

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platform to local earth using a 7/16 inch wrench:

1. Locate the chassis grounding studs on the back of the chassis.

2. Attach the two hole chassis ground lug PN 300-30016 to the

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   using two flat washers PN 510-00057, two split lock washers PN 510-00056, and two hex nuts PN 511-00046 as shown in the following figure.
   

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   0 Figure 1 Chassis Grounding Lug Location
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3. Secure the other end of the grounding cable to the earth ground in the building. You can secure the grounding cable to a proper grounding point on the rack, as long as the rack is properly grounded to the earth ground in the building.

 

Note
Connect the chassis to local earth ground so that any possible charge is carried off to the earth thus eliminating the risk of shock.

Routing the Power Cables

Ribbon recommends to route the power cables so that the top power supply cables connect from above and the bottom power supply cables connect from below. This prevents one power supply cable from getting in the way of the other one in case it needs to be removed individually.

Connecting to AC Power

Connecting to AC Power Source and Powering On

The following procedure explains how to connect to the AC power and powering on the switch:

1. For each AC power supply, insert the supplied AC power cord female connector to the power supply AC receptacle at the rear of the chassis (shown in the following figure).
   

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   0 Figure 1 SBC 5400 Chassis AC Power Location
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2. Connect the supplied power cords to the local AC power source.
3. Turn on your local AC power source.

In a dual-redundant power supply configuration, the power supplies are hot-swappable meaning that it may be replaced without removing the power supply of SBC platform (provided that the redundant power supply is operational).

Note
title Important
Before replacing a power supply in a redundant power supply configuration, verify the status of the redundant power supply. The “POK” LED status must be “solid green”. Removing the power supply when the redundant supply does not show a solid green status, may cause the system to power down. Contact Ribbon customer support if required.

The following table describes the status of AC power supply.

Caption0Table1

AC power supply LED states

Disconnecting from AC Power Source

The following procedure explains how to disconnect from your local AC power source:

1. Perform a graceful shutdown of the

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   system through BMC.
2. Turn off your local AC power source.
3. Remove the power cord.

Connecting to DC Power

Connecting to DC Power Source and Powering On

The following procedure explains connecting an

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power supply to the DC Power and power on the switch. If two power supplies are installed, both need to be connected to power before powering up the switch.

Note
Identify the correct size fuse(s) for your configuration and wire gauge before applying DC power to a switch. Also, ensure to switch off the power supply before installing the cables.

1. Remove the clear plastic terminal cover and set it aside.
2. Check the chassis ground is connected to the 2-post terminal lug next to the power supply bay. See Grounding SBC 5400 Chassis topic above.

3. Connect ground cable (green) to the screw located above the DC power terminal posts as shown in the below figure:
   

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   0 Figure 1 SBC 5400 DC Terminal Connections
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4. Use a Voltmeter to verify that no voltage is present on DC input power cables.
5. Attach the DC return cable (black) to the Return terminal.
6. Attach the -48V cable (red) to the -48V terminal.
7. Reattach the clear plastic terminal cover.

8. If applicable, attach the other end of the supplied DC power cables to DC power source.

   Warning
   Do not apply DC power to the DC Power supply prior to hot-inserting the supply into the chassis.

9. Turn on DC power source.

In a dual-redundant power supply configuration, the power supplies are hot-swappable meaning that it may be replaced without powering down the 

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  platform (provided that the redundant Power Supply is operational).

Note
title Important
Before replacing a power Supply in a redundant power supply configuration, verify the status of the redundant power supply. The “POK” LED status must be “solid green”. Removing the power supply when the redundant supply does not show a solid green status, may cause the system to power down. Contact Ribbon Customer Support if required.

The following table describes the status of DC power supply.

Caption0Table1

DC

power supply

Power Supply LED

states

States

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Disconnecting the DC Power Source

The following procedure explains how to disconnect DC power from 

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chassis :

1. Perform a graceful shutdown of the 

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   system through BMC.
2. Turn off the local DC power source.
3. Remove the clear plastic terminal cover and set it aside.
4. Remove the DC power cables from the terminals, and re-attach the screws.
5. Remove the ground cable from the power supply, and re-attach the screw.

Warning
Do not remove the DC Power supply without first turning off the power to the power supply being removed from the chassis.

Removing the Power Supply

Warning
Remove DC power from the power supply and remove the power cables from power supply before attempting this procedure.

To remove the AC or DC power supply from the chassis, perform the following steps:

1. Push the green or black integrated lever towards your left to disengage the power supply module.
2. Pull the power supply out of the power supply slot.

Refer to the following figures for integrated lever locations:

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SBC 5400 DC Power Supply Integrated Lever

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Caption0Figure1

SBC 5400 AC Power Supply Integrated Lever

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