Getting Started; Using The Power Supply - Fisher Scientific FB300-2 Manual Del Operador

Getting Started

Select a location that allows for 3" clearance behind the power supply, and comfortable reach of
the front panel controls and cell connections. Do not block the vented area of the case - on the
front bottom of the unit, or the fan area at the rear. Connect the power supply to a 3-prong
grounded AC outlet, using the AC cord provided with the unit only. Connect the
electrophoresis apparatus to the power supply, making sure to match the red positive lead to the
red positive jack, and the black negative lead to the black negative jack. Similarly, connect one or
two more electrophoresis apparatus to the power supply if you plan to run more than one in
parallel. Power the unit on using the AC power switch located at the rear of the unit, next to the
AC line cord entry.
red positive jacks

Using the Power Supply

Press the gray key on the front center of the unit to enable the control logic. The 3-digit display
will illuminate and show the setpoint value of the last saved run setup. The FB300 preserves the
run settings each time you start a run. One set of conditions is saved for each mode, constant
voltage or constant current. The setpoint value, limit parameter, time duration, and power-fail
restart setting is saved. This allows convenient setup for repetitive runs.
To change the control mode, press the constant key. This key toggles control from constant
voltage to constant current. Each time, the FB300 will display the last saved setpoint value for
that particular mode.
After selecting a control mode, either constant voltage or current, and setting the limit and timed
run parameters if desired (see Constant Voltage/Current Operations) press the Run key to energize
the power supply output. The power supply output will ramp up to the appropriate setpoint, while
not allowing the limit parameter to be exceeded. If the limit parameter should be exceeded, then
the power supply will crossover control modes, making the limit parameter the new control
setpoint. The front panel constant mode LED indicator will change to indicate that a crossover has
occurred.
FB300-2 MANUAL
black negative jacks
gray ON/OFF key
Figure 1. Front Panel Controls
Page 5
3 digit LED display
up/down arrows
select key (Set)
constant key (K)
run key
7608001 Rev A 8/02