Transition Networks
SMxxTAT4Xx Install Guide
33785 Rev. B
Page
30
of
43
Redundant Power (SM48TAT4XA-RP Only)
The SM48TAT4XA-RP supports two power supplies for power redundancy.
1.
Use a screw driver to remove the power plate cover.
2.
Carefully insert the new Power Supply into the chassis slot until the Locking Lever clicks.
3.
See
“
Connecting the AC Power Cord
”
above.
4.
Save the power plate cover and screws for possible future use.
Replacing a Power Supply
Warning
: Risk of electrical shock. For multiple power sources.
Warning
: Shock/damage hazard exists if power supply is installed / removed while powered on.
1.
Disconnect the AC power cord from the AC power outlet.
2.
Disconnect the AC power cord from the switch AC power receptacle and Power Cord Retainer (if used).
3.
Pinch the Pull Bar and the Locking Lever together and pull the old Power Supply from the chassis slot.
4.
Carefully insert the new Power Supply into the chassis slot until the Locking Lever clicks.
5.
See
“
Connecting the AC Power Cord
”
above.
Power Supply Specifications
The PS-AC-920 Secondary power supply provides redundant power support (920 Watts). The PS-AC-920 is
optional and is sold and packaged separately.
CAUTION
! Hazardous Area: Do Not remove this cover. Trained service
people only. No serviceable components inside.
LEDs
:
DC OK
and
AC OK
LEDs on front panel.
See “
Power Supply LED
s” on
page
13
.
Dimensions
(H x W x D): 1-
9/16” x 2
-
13/16” x
8-
9/16” (25.4 m x 50.8 mm x
203.2 mm)
Warranty
: 5 years warranty for the PS-AC-920.
Unpacking / Installing / Replacing Power Supplies
The switch ships with one power supply (820 Watts) standard; order the second
Power Supply (820 Watts) if the full 90 Watts output is needed on all ports.