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Optima 520 Series
3.5 Digital Power Meter Option
The digital power meter displays the voltage, amperage, active power (watts), and power factor as monitored at the inlet of
the PDU. A selector-switch provides two modes of operation: a fixed reading of any of the four parameters, or a continuous
cycling through all four measurements.
Powered
Breaker
Outlet Control Bus
Enable
Disable
Return
Optima
Main Breaker
Main Power
On
Switched Outlets
Controls
OFF
ON
PRESS
RESET
Local/On
Off
Remote
VOLTS
AMPS
WATTS
PF
SEL
When the PDU starts up, the power meter will first perform a self-test routine, then continuously display ac volts with the
VOLTS
indicator on. The display will remain in the volts mode as long as the front panel
SEL
button is not touched.
After the unit powers up to normal operation, to cycle through
VOLTS
,
AMPS
,
WATTS
, and
PF,
briefly press the
SEL
button
once for each measurement.
To have the display continuously auto-cycle through all four measurements, hold the
SEL
button down for 3 seconds. Each
measurement will display for 3 seconds in sequence.
When the auto-cycling mode is initiated, the unit will briefly display Auto On before cycling begins. During cycling, if the
SEL
button is pressed, the unit will display Auto OFF then switch to displaying
VOLTS
.
Configuring the power up mode
Any one of the four display modes can be selected as the default power-up mode. For example, it may be desirable to
configure the unit to always power up in the
AMPS
mode.
To set the unit to always read
AMPS
on power up, tap the
SEL
switch until the
AMPS
mode is displayed, and then leave
the unit in this mode for at least 60 seconds. As long as the
SEL
switch is not pressed again during the 60 second interval,
the unit will configure itself to always power up displaying the chosen mode, which is
AMPS
in this example.
This capability also applies to the auto-cycle mode. Place the display in auto-cycle mode, and leave it there for at least 60
seconds. The next time the PDU is power cycled, the display will start up with the auto-cycle mode.
3.6 EMI Filter Option
There are no controls associated with the EMI filter. It is a passive device working at all times to reduce common mode
and differential mode noise on the incoming power lines.
