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To install a power supply module, perform the following steps:
1. Orient the PSU with the AC or DC connector toward the right as shown in
Figure 27
on page 44, respectively.
2. With the latch in the open position, slide the module into the appropriate power supply slot as far as it
will go.
3. Rotate the PSU latch upward until it is flush against the PSU face, ensuring that the connector on the PSU
engages the connector inside the chassis.
4. Turn the thumbscrew located at the top of the power supply latch clockwise, until it is finger-tight, to
secure the latch to the power supply unit within the enclosure.
5. If replacing two power supply modules, repeat step 1 through step 4.
NOTE: AC PSUs — with or without a power switch — are compatible with one another in that the two
different models can coexist in the same enclosure, and are interchangeable.
Connecting a power cable
This section addresses power cable connection for
enclosures configured with either AC or DC power supply
modules.
Connecting an AC power cord
The diagram at right pertains to AC PSU models
(a switchless unit is shown).
1. Install the power cord:
a. Connect the female plug to the AC PSU cord inlet.
b. Connect the male plug to the rack power source.
Verify connection of the primary power cord(s) from the
rack to separate external power sources.
2. Power-on the newly-installed PSU:
• Connecting the power cord effectively powers a
switchless AC PSU on. Wait several seconds for the disks to spin up.
• For AC PSUs equipped with a power switch, press the power switch to the On position.
Wait several seconds for the disks to spin up.
3. If replacing two power supply modules, repeat step 1 through step 2.
Connecting a DC power cable
Locate the DC power cable that applies to the DC PSU being installed in the enclosure.
Connector (front view)
1. Install the appropriate DC power cable:
Connector pins (typical 2 places)
Power cable (right side view with sectioned cutaway and wire breaks)
Figure 28 DC power cable featuring D-shell and lug connectors
AssuredSAN 3000 Series FRU Installation and Replacement Guide
+L
+L
GND
GND
-L
-L
Ring/lug connector (typical 3 places)
Figure 26
on page 44 and
Power supply
module
Rack power
source
Ground
+L
GND
-L
(+)
(-)
45
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