KEPCO BHK-MG 40W (Half Rack) Series User Manual
Page 100
3-56
BHK-1/2-MG 121313
The load current is given by the equation,
Io = Eo/R
LOAD
RECOMMENDED PROCEDURE. The following steps are recommended to ensure the combi-
nation of power supplies (power assembly) configured for master-slave series (automatic track-
ing) operation is connected and set up properly for voltage mode operation.
1. With the units turned off, perform all external wiring (see Figure 3-21). If possible, use a
properly rated switch between the power supply and the load. Use R
EXT
= E
O
max
M
(see
2. Apply power to the units:
a. If a load switch is used, open the switch. Set POWER switch of both units to up position
to turn power on.
b. If load switch is not used, Set POWER switch of both units to up position to turn power
on, then press OUTPUT ON/OFF key once on each unit to disable the output.
3. Program slave unit as follows:
a. Program Iset
S
to approximately 1.01 to 1.02 x current limit for power assembly. This
maximum current limit is never used except in the unlikely event that the current limit of
master unit is not working.
b. Program Vset
S
to 0.
c. Program overcurrent value of slave unit (Iocset
S
) to 1.1 x Iset
S
(step 3a).
d. Program overvoltage value of slave unit (Vovset
S
) to
1.1 x
.
where Eo is the output voltage desired for the assembly.
4. Program master unit as follows:
a. Program Iset
M
to the current limit of the power assembly.
b. Program Vset
M
to
.
c. Program overcurrent value of master unit (Iocset
M
) to 1.1 x Iset
M
(step 4a).
d. Program overvoltage value of master unit (Vovset
M
) to 1.1 x Vset
M
(step 4b).
5. To apply power to the load:
a. If load switch used, close the switch.
b. If load switch not used, press POWER ON/OFF key (once) on master unit, then slave
unit.
E o
(
) EomaxS
(
)
E o m a xM
(
)
E o m a xS
(
)
+
----------------------------------------------------------------------
E o
(
) EomaxM
(
)
E o m a xM
(
)
E o m a xS
(
)
+
----------------------------------------------------------------------