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24 | Unpacking and Cabling DPS Expansion Module

2. Attach the power cord to the power distribution unit in the rack or other power source.

(Although the back of each model is different, the power supply modules are in the same

location for all models.)

WARNING

Before applying power, carry out the grounding checks detailed in the following

procedure.

CAUTION

The power connections must always be disconnected prior to removal of the

power supply module from the enclosure.

To perform a grounding check

If a rack distribution system is being used, it is very important that you ensure power is

removed from the rack. Only after power is removed should you connect the DPS Expansion

Module power cord to the rack distribution and the DPS Expansion Module enclosure.

If a direct connection is made with the DPS Expansion Module power cord, ensure that it is

connected to the DPS Expansion Module enclosure.

WARNING

Some electrical circuits could be damaged if external signal cables or power

control cables are present during the grounding checks.

Then, check for continuity between the earth pin of the IEC 320 connector on one of the power

supply modules and any exposed metal surface of the DPS Expansion Module enclosure.

Powering DPS Expansion Module

Power on DPS Expansion Module before you power on DPS1000 Series.

To power on DPS Expansion Module

1. Ensure that power is applied from the power distribution units.

2. Apply power to the enclosure(s). Press the power supply switches to the ON (STANDBY)

position. Repeat for the other power supply module.

Any time you power cycle the DPS Expansion Module enclosure, you should shut down and

restart DPS1000 Series as well.

Important! Always shut down DPS1000 Series before working on DPS Expansion Module. If

you reconnect, power cycle, or otherwise reset DPS Expansion Module while it is attached to a

live DPS1000 Series, data loss may occur.

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Tandberg Data DPS Expansion Module Disk Pack Specifiche Pagina 30