AMETEK CW-M - Manual (Page 42)

Elgar CW-M Series
5-2 M161570-01
V RANGE HIGH/LOW Switch.
This switch allows you to select the 0V-135V range
or the 0V-270V range of output voltage. The output current available on the low voltage
range is twice that available on the high voltage range.
NOTE: This switch should not be toggled while the system output is turned on. Doing so
will cause the output to turn off, and a fault condition will be indicated.
CAUTION! To protect the load, ensure that the output of the
CW unit is turned off before using the V RANGE switch.
NUMERIC DISPLAY.
This large, four-digit display, located in the voltage cluster, is a
di gital voltmeter that measures and displays the power supply’s output voltage. If the
power supply is operating, but the output power is turned off, then this meter displays the
voltage that the output will assume when it is turned on.
VOLTAGE MODE LAMP.
This lamp, located directly over the numeric display,
indicates that the power supply is operating in the constant output voltage mode. This is
the most common operation mode used. If the output current rises above the level set by
the current program level, this lamp turns off and the CURRENT MODE lamp turns on.
VOLTAGE Knob.
This large, multi-turn knob, at the right side of the voltage cluster of
controls, allows you to easily select the desired power supply output voltage.
SET OVP.
This is a screwdriver accessible, multi-turn adjustment located directly under
the display. To define a maximum output voltage, first turn the adjusting screw fully
clockwise. Set the output voltage to the desired trip point. Then, slowly, turn the
adjustment counter-clockwise until a fault is generated, turning the output off.
 CURRENT/FREQUENCY CLUSTER
These six controls and indicators, located in the center of the front panel, are used to
select and display the CURRENT and FREQUENCY.
MEAS/PROG Switch.
This switch selects which current measurement is sent to the
meter. If the meter has been set to display current, and this switch is set to MEAS, then
the measured output current is displayed. If this switch is set to PROG, then the selected
current limit point is displayed.
CURR/FREQ Switch.
This switch selects the type of quantity to be displayed.
Selecting CURR displays the selected current, either meas or prog. Selecting FREQ
displays the operating frequency.
Numeric Display.
The large, four-digit display in the current/frequency cluster shows
the measured quantities described above.