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Smart 16e Shelf User Manual Installation of Power Supplies

In accordance with UL 60950, the following safety guidelines must be met for installation of the

Smart 16/16e DC power supply (P/N 1200048L4 or 1202048L1):

• The branch circuit over-current protection shall be a fuse or circuit breaker rated minimum 48 V,

maximum 15 A.

• To be installed in a Restricted Access Location.

• For use only with the Smart 16/16e family of products (P/N 4100023L3, 4200023L5, 4202023L1,

4202023L2, 4202023L5, and 4202023L6).

The power supply can be installed in either of the two slots at the top of the Smart 16e Shelf. If only one

power supply is used, the blank power supply faceplate furnished with the rack should be installed over the

unused slot.

The Smart 16e Shelf is fully operational with one power supply; however, a second supply can be added to

provide backup for the power supply subsystem. With the two-supply configuration, one of the supplies

will operate in a hot-standby mode (the corresponding output on the standby supply will automatically

provide the power required if any of the four outputs from a supply fails or begins to operate out of

specifications).

Slide the power supply along the card guides of one of the top slots until it is fully seated in the connector

and the faceplate is flush with the chassis. Tighten the screws on the front of the power supply panel.

Ensure screws on faceplate are tightened securely with a screwdriver.

Each power supply has a

STATUS LED that illuminates green when the power supply output voltages

(+5V, -5V, +12V, and -12V) are within compliance; the

STATUS LED illuminates red when a voltage is out

of tolerance. When operation of any one of the four voltages drops out of specification, an SNMP trap will

be sent from the controller. Failing power supplies are not user serviceable and require replacement.

• Two fuses provided for separate circuits. Test before touching.

• For continued protection against the risk of fire, replace only with the same type of

rating of fuse.

• Two fuses provided for separate circuits. Test before touching.

• For continued protection against the risk of fire, replace only with the same type of

rating of fuse.

Only individuals familiar with installation and maintenance of the Smart 16e Shelf

should install or replace the power supplies. A shock hazard could be present if an

empty power supply slot is left uncovered.

The power supplies can be “hot swapped.”

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