The DSC 8000 supports three hot-swappable Power Modules (PMs). The DSC 8000 platform is configured for N+1 redundancy. N+1 redundancy is achieved by having PM4 installed. PM4 is the backup Power Module for PM1 and PM2. If PM1 or PM2 should fail, PM4 picks up the load previously carried by the failed module.

 For the location of the PMs in the chassis, refer to Figure DSC 8000 Inter-shelf Connections.

Power Module Front Panel Layout (1100W DC) 

The following spare or replacement PM can be purchased from Ribbon:

Part Number Details

Part NumberDescription
301Q0985701100W, DC PM for MTCA.4

A DCS 8000 operating in an N+1 redundant PM configuration does not have to be powered down when replacing one PM. However, if the chassis is operating in a non-redundant PM mode (that is, only one PM installed), the system must be powered down before replacing the PM.

Empty PM slots must be filled with a double-wide, full-size air management blade (AMB) to ensure proper Electromagnetic Field (EMF) shielding and cooling of the DSC 8000. For more information about the supported Air Management Blades, refer to Table Supported Air Management Blades (AMB's).

Warning

PM maintenance should only be performed by trained personnel. When the system is powered up, high voltages are present in the PEM and parts of the PM. Do not reach into the enclosure.


Caution

All PMs must be of identical make and model. If changing the make or model, power must be removed from the DSC 8000 chassis and all supplies must be replaced.

An Air Management Blade is required in an otherwise empty slot. Failure to cover an open slot can cause overheating of PMs, cards, or other components, and can damage the system.

Extract a PM

Caution

If the DSC 8000 does not have an N+1 redundant PM  configuration (that is, no PM4 installed), turn the power to the chassis OFF before removing the PM.

Tip

The DSC 8000 with N+1 redundant PM configuration does not require the power be turned OFF when removing only one PM. 

The hot-swap LED blinks to indicate that the handle is open and the PM is waiting to be deactivated. It is not safe to extract the card in this state.

When the hot-swap LED stops blinking and remains illuminated, the PM is temporarily inactive, and it can be extracted safely.

Start

  1. Open the lower handle partially to activate the hot swap switch and prepare the card for extraction.  Wait until the hot swap light stops blinking and turns solid blue.
  2. Unscrew the two retention screws on the front of the PM (Figure Power Module Front Panel Layout (1100W DC)).
  3. Grasp both the top and bottom ejector handles, as described in step 1, and pull the PM away from its backplane connection. Carefully slide the PM out of the chassis slot.
  4. Insert a replacement PM to maintain the chassis' power, shielding, and cooling  performance. 

Insert a PM

Tip

If the DSC 8000 does not have an N+1 redundant PM  configuration (that is, no PM4 installed), turn the power to the chassis OFF before removing the PM.

Start

  1. Extract the PM or double AMB in the slot, if required (see preceding section, To extract a PM).
  2. Close the top and bottom ejector handles on the PM.
  3. Line up the top and bottom edges of the PM with the slot guides at the front of the appropriate slot in the DSC 8000 chassis.  
  4. Grasp the PM, and with both thumbs placed on the front panel, firmly slide the PM into the slot until the connection is made with the backplane. The PM must be inserted in one smooth continuous motion.
  5. Tighten the two retention screws on the front panel to secure the PM in the chassis. 
Warning

Do NOT over tighten screws past initial contact with the extended flanges. Over tightening the screws can result in damage to the card and chassis.

  • No labels