KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.4.12 and higher - Manual (Page 87)

BOP HIPWR 031014
3-21
RESISTIVE. This mode, as the name suggests, is useful for resistive loads. Table 3-6 indicates
how the power supply responds to a command to go from Output ON to OFF.
Accessing the BOP after the output is disabled in BATTERY mode is
hazardous because (1) high current arcing is possible and (2) either the
external battery voltage, or the voltage (±Voltage Protection max) on
the BOP output terminals may be dangerous. Therefore, for battery and
constant-voltage-type active electronic loads it is recommended that
two properly rated external switches be installed for safety: one in
series with the battery, and one across the BOP output. After the unit is
set to OFF, first open the switch in series with the battery, then close
the switch across the BOP output to ensure safety before handling
BOP connections. When connecting the battery, the switch across the
output should be opened after the connections are complete and then
the switch in series with the battery should be closed. If the constant-
voltage-type active electronic load is adjusted to zero before handling
the power supply-to-load connections, only the switch across the BOP
output is required.
BATTERY. This mode is necessary for the power supply to function properly and safely with
either battery or constant-voltage-type active electronic loads. This mode prevents the battery
from discharging during the OFF state. When the output is disabled (set to OFF), the BOP will
go to current mode, current will be set to zero, with voltage protect and current limit set to maxi-
mum. In this way the battery will not be discharged while the output is OFF. For constant-volt-
age-type active electronic loads this mode stops energy flow during the OFF state. Table 3-6
indicates how the power supply responds to a command to go from Output ON to OFF.
To configure, press
%
from the power-up screen, then highlight Load Type and press
!
to
modify. (If a Password is required, see PAR. 3.2.4.4 for instructions.) Highlight Active, Resistive
or Battery (see explanations and associated WARNINGS above) and press
$
to save. Then
press
$
to save for power-up,
#
to abort, or
%
to apply the changes (without saving for
power-up) and exit. After configuring, the new setting will be effective when the power supply
goes from output on to output off.
To restore factory default (Active), press
%
from the power-up screen, highlight Load Type,
press
!
, then press
@
to restore default. Press
$
to save for power-up or
%
to exit
3.3.7 CHANGING THE DEFAULT POWER UP SETTINGS
When the BOP is shipped, the following default settings are programmed to be in effect each
time the unit is turned on, however these defaults may be changed as indicated below;
• Mode: Voltage (may be voltage or current, see PARs. 3.3.2 and 3.4.2. Table 3-7 illus-
trates the relationship between Mode, Main Channel, Protection Type and Levels set-
tings.
• Main Channel: Internal (may be Internal, External, or External Reference Level, PARs.
and 3.4.3).
• Protection type: Internal (may be Internal, External, Lesser Limit) (see PARs. and 3.4.4)
• Levels, Voltage and Current: maximum (see PAR. 3.4.4) Represents the power-up val-
WARNING