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When in Sink mode, the power supply is operating as an electronic load, absorbing and recu-
perating 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 VOLTAGE SINK when the unit is in voltage
mode and an external constant current is injected into the BOP. Correspondingly, CURRENT
SINK is displayed when the unit is in current mode and an injected current from an external con-
stant 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.
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, and identifies the main and
protect channels.The protect channel will show either a single entry for both positive and nega-
tive VPROTECT or CPROTECT or separate entries for + and – VPROTECT or CPROTECT.
This is established by selecting 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, 3.4.3.2). If the main or protect channel indicates EXTERNAL, the corresponding setting is
determined by an analog reference (see PAR. 3.4.3.1.
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
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
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.
When the power supply is turned on, it performs a brief self-test that includes testing the three
processors (analog, interface and display), then displays the power-up screen (see Figure 3-3
or 3-4). If an error is detected, the FAULT indicator will light, information about the error will be
briefly displayed on the LCD.
If the unit powers up in REMOTE mode, press
mode.
NOTE: If the unit is a Slave of a multiple unit configuration, the unit will power up in REMOTE
and will display LOCAL LOCKOUT once the Master has taken control of the Slave. To
restore LOCAL control of a Slave, power down both master and slave, then turn on
only the slave and press
BOP HIPWR 080709
%
. Depressing the corresponding key on the keypad activates the function
MAY DAMAGE THE UNIT.
!
!
(see PAR. 3.3.1) to set the unit to LOCAL
(see PAR. 3.3.1) to set the unit to LOCAL mode.
3-5
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