It is possible to enter an amount of time for the power supply to provide
power, after which it will automatically shut off. Use this feature for timed
runs.
Press the Set key until the LED indicating "Time" is illuminated. Use the
UP and DOWN arrow keys to change the time duration to the desired
value (0-999 minutes). A time duration of zero effectively disables timed
run mode.
When running a timed run, the time parameter displays the time
remaining in the run. When running a non-timed run, the time parameter
displays the elapsed time during the run
Automatic power-fail restart capability allows a timed run which is
interrupted by loss of AC power to be restarted automatically, so that the
total time programmed for the time parameter will be met.
Note
Loss of AC power includes unplugging the unit. When performing
timed runs with power-fail restart enabled, always use the front panel
controls to stop a run in progress.
s
To enable power-fail restart, press and hold the Set key when changing to
the time parameter (from the current parameter). While continuing to
hold the Set key, simultaneously press and release the UP arrow key. The
display will show "PF" momentarily to indicate power-fail restart is active.
Whenever power-fail restart is enabled, "PF" is displayed briefly as the time
parameter is selected by pressing the Set key. The power-fail restart feature
can be enabled either before or after changing the time duration to the
desired value (0-999 minutes). Setting the time duration to zero will
automatically disable power-fail restart (if you have enabled power-fail
restart before setting a time value, and want to disable it, then simply
increment and then decrement the time parameter back to zero to disable
power-fail restart).
When AC power is restored during a timed run in which power-fail restart
is enabled, the display will show "PF" for approximately 10 seconds
indicating power-fail restart pending. During this time the output is not
energized, to allow safely stopping the run (by pressing RUN). After the
power-fail restart pending delay is completed, the power supply output will
ramp up to the setpoint value and the time will continue from that point.
Any number of power interruptions can occur during the completion of a
single run.
2-4
EC300XL
Thermo Scientific
Section 2
Set-Up and Operation
Timed Operations
Automatic Power-fail
Restart
