KEPCO BOP-ME 1KW, Operator'S Manual

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3-6
BOP HIPWR 091719
When in Current mode, the power supply will (within the configured and rated limits) provide the
programmed output current. Mode displayed at the upper right is CURRENT. Voltage is deter-
mined by the load, and cannot exceed the Voltage Protect limits.
Either SOURCE or SINK is displayed below the mode of operation. When in Source mode, the
power supply is delivering (sourcing) energy to a passive load. When in Sink mode, the power
supply is operating as an electronic load, absorbing and recuperating the energy of an active
load. Recuperated energy is passed back into the a-c source power line. Mode displayed at the
upper right is SINK when the unit is in voltage mode and an external constant current is injected
into the BOP. Correspondingly, SINK is displayed when the unit is in current mode and an
injected current from an external constant voltage is presented at the output of the BOP. These
messages are normally displayed briefly when voltage is decreased towards zero, and may also
be displayed briefly during changes in a capacitive load.
If CPROTECT (current protection), VPROTECT (voltage protection) or PROTECT (analog pro-
tection, either voltage or current) is displayed, the power supply output is controlled by the pro-
tect channel and will not exceed the preprogrammed protection limit.
The bottom lines of the display provide STATUS, ACTIVE SETTINGS and MESSAGES (includ-
ing error messages).
STATUS includes whether the unit is under local or remote control, identifies the main and pro-
tect channels and, if the LAN interface is installed, LAN OK is visible when the LAN indicator on
the LAN port is lit (see Figure 2-1 and Table 2-1). When the LAN indicator is blinking, LAN OK
blinks, and the foreground and background colors of the LCD display will alternate. The protect
channel will show either a single entry for both positive and negative VPROTECT or CPRO-
TECT or separate entries for + and – VPROTECT or CPROTECT. This is established by select-
ing either Bipolar or Independent for Protect Entry (see PAR. 3.3.3.1).
ACTIVE SETTINGS show the values that will be applied to the respective channel. The high-
lighted settings are used to program the unit and can be changed using the keypad or
ADJUST
control after highlighting. If these are changed using the keypad, the ENTER key must be
pressed to program the unit; if the ADJUST control is used, the changed setting immediately
programs the unit without pressing ENTER . If the main channel indicates CURR-EXT or VOLT-
EXT, the setting establishes the full scale output corresponding to a 10V analog signal (see
PAR, 3.4.4.2). If the main or protect channel indicates EXTERNAL, the corresponding setting is
determined by an analog reference (see PAR. 3.4.4.1.
MESSAGES change depending on the particular screen being displayed. Error messages are
displayed for both local and remote operation, and only appear briefly.
At the right of the display, five graphic boxes indicates the active function of the soft function
keys,
!
through
%
. Depressing the corresponding key on the keypad activates the function
shown on the display. These functions are arranged in a menu format (see PAR. 3.2.4).
3.2.3 TURNING THE POWER SUPPLY ON
CAUTION: DO NOT repeatedly toggle the circuit breaker/switch as this may damage the
unit.
Set POWER ON/OFF circuit breaker/switch (1, Figure 3-1) on front panel to ON. If actuator does
not lock when released, wait a few seconds before trying again. The circuit breaker is “trip-free”
design; if overload exists, contacts cannot be held closed by actuator.