Installing the SA7x
4.2 Selecting Line Input Voltage
4.2 Selecting Line Input Voltage
The SA7x enclosure power supply can be set to operate from either 120 Vac (60
Hz) or 220 Vac (50 Hz). Use the following procedure to set the line voltage:
1. Verify that all front panel drive power switches and the Master On/Off power
switch on the rear panel of the power supply are off.
2. Locate the Line Voltage Selector switch on the power supply. The switch is
accessible through a cutout in the rear panel of the power supply just to the
right of the line input connector.
3. Using a small screwdriver, set the Line Voltage Selector switch to the correct
line voltage. The voltage selected, either 120 Vac or 240 Vac, is displayed on
the switch.
caution
The SA7x enclosure power supply is universal for both 120 Vac (60 Hz) or
240 Vac (50 Hz). The power supply voltage frequency is factory set to 240
Vac and must be reset for 120 Vac operation. Using the wrong setting will
damage the power supply.
4.3 Performing a Post-Installation Checkout and Power-Up
Use the following procedure to verify normal operation of the power supply, OCP,
and fan assembly before operating the SA7x enclosure. It is best to perform this
procedure after all disk drives are installed in all the enclosures in the storage
array cabinet,
but not yet connected to power
.
CAUTION
Before performing this checkout and power-up procedure, be sure the
enclosure frame is secured in the chassis and the front and rear enclosure
covers are installed. Failure to do so will defeat the cooling airflow of
the enclosure and may result in permanent damage to the disk drives or
power supply.
1. Verify that all power and interface connections to the rear of the enclosure
are correct and secure.
2. Verify that the Line Voltage Selector switch on the power supply of the SA7x
enclosure has been set to the proper source voltage. If not, set the switch as
described in Section 4.2.
3. Verify that the drive power switches are turned off.
4. Verify that the enclosure power cord is securely connected to the cabinet
power controller.
5. Set the enclosure Master On/Off switch to on.
6. Verify the power is on by checking that the fan is operating. Do this by
feeling for airflow out the rear of the enclosure. If the fan does not start,
recheck the power connections. If power connections are connected properly,
verify that the power supply is firmly seated in its connector. If the power
still does not come on, see Chapter 5 for more information.
4–2 Installing the SA7x
