Switching On And Power-On Conditions; Output Control; Manual Operation - Metek Sorensen XEL serie Manual De Operación

In this operating manual, front panel keys, controls and sockets are shown in capitals, e.g.
CURRENT, OUTPUT, LOCK. Messages displayed on the 7-segment LEDs are shown in a different
type-font, e.g. turn oFF, OtP trip.

Switching On and Power-On Conditions

The POWER switch is located at the bottom left of the front panel. When the POWER switch is
l
turned on ( ) the right hand meter briefly indicates the firmware revision before the display shows
Volts and Amps.
For programmable XEL-P models the default display sequence at power on is different: the right
hand meter briefly indicates the instrument firmware revision followed by the interface firmware
revision ( IF
seconds, no physical LAN connection is found, the instrument's display will flash alternately
between the normal voltage and current values and the message
seconds. Indication of no LAN connection at power on is an essential LXI compliance requirement
but can be disabled by the 'NOLANOK 1' command over any interface, see the LAN Error
paragraph in the Remote Interface Operation section for further details. This change of power on
setting is retained until reversed by a 'NOLANOK 0' command or by the use of the rear panel LAN
RESET switch to restore the factory default LAN setting, see the LAN paragraph in the Remote
Interface Operation section.
Note that the display messages do not affect the operation of the power supply itself.
At power on, the factory default setting is for the output to be off. The preset output volts and
current will be determined by the present control settings and shown in the display. All other
settings will be the same as they were at last power off.
Repeating the procedure will change the setting back to the previous state.

Output Control

Setting Up the Output
With the POWER switch on and the
accurately preset using the VOLTAGE and CURRENT controls; the left-hand meter shows the set
voltage, the right-hand meter shows the set maximum current and the SETTINGS indicator is lit.
When the output switch is switched on, the OUTPUT indicator lights; the left-hand meter now shows
the actual voltage and the right-hand meter the actual load current.
To change the current limit range the output must be switched off; if the output is on the warning
message turn oFF
remains unchanged.
shows in the left hand meter) before the display shows Volts and Amps. If, after a few
The dc output state at power-on can be set to be 'always off' or 'same as
at last power-off'. The setting can be changed as follows. With the VIEW
key held down, press and hold down the
will first show the present setting for 1 second (
default is still selected) before flashing the new setting for 2 seconds (
LASt Set
continuously in the display and the change is implemented; release the
OUTPUT and VIEW keys.
The upper limit of the CURRENT control can be switched between
the maximum for this model and 75mA with alternate presses of
the LOW I RANGE key to give finer current limit setting and
measurement resolution (0.01mA up to 75mA); the indicator beside
the key is lit when the low range is selected.
is shown briefly in the display, the OUTPUT indicator flashes and the range
in this instance). After 2 seconds the new setting is shown
OUTPUT off the output voltage and current limit can be

Manual Operation

LAn Err, for the next 10
OUTPUT key; the display
OP OFF if the factory
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