KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.4.08 to 4.11 - Manual (Page 83)

BOP HIPWR 070212
3-19
CAUTION: WHEN WORKING WITH ACTIVE LOADS, ALWAYS ADJUST THE BOP PRO-
TECTION LIMITS TO BE ABOVE THE MAXIMUM VALUES OF VOLTAGE OR
CURRENT EXPECTED FROM THE LOAD. FOR EXAMPLE, WHEN THE BOP IS
OPERATING IN VOLTAGE MODE SINKING ENERGY FROM A CONSTANT
CURRENT TYPE LOAD, SET THE CURRENT PROTECTION LIMITS OF THE
BOP ABOVE THE MAXIMUM CURRENT EXPECTED FROM THE LOAD.
1. Press
%
from the power-up screen to enter the General Setup menu, then highlight
Max/Min Settings and press
!
to view. (If a Password is required, see PAR. 3.2.4.4 for
instructions.)
2. Highlight the ±CPROTECT or ±VPROTECT max/min value and press
!
to change it. Soft-
ware limits are absolute values (do not use minus sign for negative limits). Use number keys
to change the setting. Press
$
to save, or
%
to abort.
3. When complete, press
$
to save for power-up, or
#
to abort, or
%
to apply the changes
(without saving for power-up) and exit.
4. Upon return to the power-up screen, the new protection limit (voltage or current) is com-
pared against the protection limits in effect. If the new protection limit setting is below the
existing setting for the protection limit, the protection channel (voltage or current) is set to
zero.
3.3.4.3 EXTERNAL LIMITS
These limits are external analog signals which are converted within the BOP to digital signals
that program the protection channels only: current protect in voltage mode and voltage protect
in current mode. The range of each analog input signal is +1V to +10V, corresponding to a
range for clamping the output between minimum, 10% of nominal (positive and negative), to
+max/–min of nominal rating. Refer to PAR. 3.4.4 for details on implementing external limits.
Table 3-4 explains the effect that these limits have in both voltage and current mode, and refer-
ences the corresponding paragraph for changing the parameter in either local or remote mode.
3.3.5 ENABLING/DISABLING DC OUTPUT POWER
The BOP output can be disabled (OFF) or enabled (ON) by toggling the STANDBY key in local
mode or sending the SCPI OUTPut ON or OUTPut OFF command (see PAR. B.13) via the
selected digital remote control bus (see PAR. 3.5). The behavior of the unit when disabled
depends on the Load Type setting (see PAR. 3.3.6 and Table 3-6 for details).