KEPCO BHK-MG Series, Руководство оператора

Страница: 54 / 150

3-8
BHK-1/2-MG 030916
3.2.9 SETTING OUTPUT VOLTAGE OR CURRENT
V SET and I SET set output voltage and current limit, respectively, when the unit is in constant
voltage (CV) mode and set voltage limit and output current, respectively, when the unit is in con-
stant current (CC) mode. The mode (CV or CC) is determined by the load together with the pro-
grammed settings. As long as the voltage across the load produces a current that is less than
the
I SET value, the unit operates in CV mode (voltage programmed to V SET value, current lim-
ited by I SET value). If the load changes to the point that current through the load reaches the I
SET value, the unit automatically enters CC mode (current programmed to I SET value, voltage
limited by V SET value).
With the power supply in command entry status
(:_:_:)
, press V SET (voltage) or I SET (cur-
rent) key to put the power supply in data entry status
(=_=_=)
. The lower right side of the LCD
shows the programmed setting in effect when the key is pressed. Press ENTER or CLEAR to
exit without changing setting. Enter new value (the key erases data just entered) and press
ENTER to accept new setting or CLEAR to exit without changing setting.
NOTE: Two decimal places are used for voltage settings and three decimal places for current
settings (except that only one decimal place is used for setting voltage on Models BHK
1000-40MG and BHK 2000-20MG).
With the power supply in command entry status
(:_:_:)
, an alternative is to use key
(increase) or key (decrease) to change the output by the minimum increment (0.025% of
E
O
max for voltage, 0.025% of I
O
max for current). In CC mode, these keys control output cur-
rent; in CV mode they control output voltage. When the unit switches from constant current (CC)
to constant voltage (CV) mode, or from CV to CC mode the
and keys are reassigned to
the active parameter. Once the transition point is reached, each press of the key increases
voltage, then current, changing the mode, from CV to CC or from CC to CV. The key has no
effect after the maximum (or programmed limit) has been reached.
If the value entered exceeds the maximum setting, the LCD bottom line flashes
VsetMAX=n.n
V
or
IsetMAX=n.n mA
where n.n is the maximum setting (see PAR.3.2.11). Press CLEAR and
enter a value that does not exceed the maximum setting.
3.2.10 SETTING OVERVOLTAGE OR OVERCURRENT PROTECTION
With the power supply in command entry status
(:_:_:)
, press OV SET (overvoltage) or OC
SET (overcurrent) to put the power supply in data entry status
(=_=_=)
. The lower right side of
the LCD shows the programmed setting in effect when the key is pressed. Press ENTER or
CLEAR to exit without changing setting. Enter new value and press ENTER to accept new set-
ting (the key erases data just entered), or CLEAR to exit without changing setting.
The value for overvoltage protection can be set within the range of 0 to 1.1 x E
O
max; overcur-
rent can be set within the range of 0 to 1.1 x I
O
max. The factory default values are 1.1 x E
O
max
for overvoltage protection and 1.1 x I
O
max for overcurrent protection.
NOTE: Two decimal places are used for voltage settings and three decimal places for current
settings (except that only one decimal place is used for setting voltage on Models BHK
1000-40MG and BHK 2000-20MG).