MPE DP SERIES II, Руководство по эксплуатации и обслуживанию

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voltage and current of the power supply. Over voltage trip and over current trip set the levels at
which the power supply will alarm if the levels are exceeded. Period, applicable in auto
sequence operation, determines the time period that the power supply will remain at the memory
location before advancing to the next memory state.
After pressing the mem key, the user can enter a new memory location by pressing a number on
the keypad or by pressing the up/down keys to increment or decrement the memory location.
After the selection is made, the enter key must be pressed to save the new memory location or
else the clear key can be pressed to exit without saving the new memory location.
The display key displays the voltage and current set points on the voltage and current display,
respectfully. The display reverts to displaying the actual output voltage and output current when
the display key is released. If the power supply is operating in voltage mode, then the actual
output voltage will be close to the voltage set point and the actual output current will be less than
the current set point. If the power supply is operating in current mode, then the actual output
current will be close to the current set point and the actual output voltage will be less than the
voltage set point.
The keypad and up/down keys are active in run mode operation. A repeat last command feature
allows the voltage set point, current set point, over voltage trip, over current trip, or period to be
modified without first pressing menu and item to select the parameter to be changed. Whatever
parameter has been changed last is the one that will change when these key are pressed.
3.1.1.2 Set Point Commands
Figures 3.2 through 3.6 illustrate set point commands voltage set, current set, over voltage trip
set, over current trip set, and period set, respectively. All of these commands can be made when
the power supply is in either the standby, alarm, or power mode states.
Depending on whether the power supply is configured for rotary input or keypad input, the
command sequence is slightly different. With the rotary configuration, voltage and current set
point commands are entered with the front panel potentiometers and over voltage trip, over
current trip, and period set points are entered with the keypad. With the power supply
configured for keypad, all commands are entered with the keypad.
With the power supply configured for rotary, first press the menu key to enter set point
commands. The volt ctl (voltage control) LED will initially flash. Press the item key two times.
The OVT (over voltage trip) LED will flash. This indicates that a keypad or up/down entry will
create a new OVT set point. Pressing the item key causes the OCT (over current trip) to flash
indicating that a keypad or up/down entry will create a new OCT set point. Again pressing the
item key causes the P (period) in the voltage display to flash indicating that a keypad or up/down
entry will create a new period set point.
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