CHAPTER 6 SERIES & PARALLEL OPERATION
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6-2-2. Parallel function descriptions
a. Priority of power ON operation: Master unit first and then Slave unit.
b. Priority of power OFF operation: Slave unit first and then Master unit.
c. It is required to set r.dnt in the MENU selection as 0.
d. Set the PSOP function in the MENU as PM for the power supply of MASTER.
e. Set the PSOP function in the MENU as PS for the other SLAVE units.
f.
When over voltage or over current is occurred, to ensure the protection function will work
properly, please set a higher OVP/OCP value for the SLAVE units.
g. After setting, the output ON/FF is controlled by MASTER.
h. The MASTER shows the output voltage and the output current of single unit, and the
SLAVE shows the output current of single unit only.
i.
The voltage monitoring functions, Pin#20 (V MON) of APG connector of MASTER and
SLAVE, are functional when DC power supplies are used in parallel.
j.
The current monitoring functions, Pin#22 (A MON) of APG connector of MASTER and
SLAVE, are functional when the units are used in parallel. The total output current =
MASTER c SLAVE current.
k. When operated in parallel, the protection function of the MASTER, Pin#9 (ALM STATUS)
of APG connector, is functional. If the MASTER acts abnormally, its protection function will
be activated to shut down both of MASTER and SLAVE.
l.
When operated in parallel, the protection function of the SLAVE, Pin#9 (ALM STATUS) of
APG, is functional. If the SLAVE acts abnormally, its protection function will be activated
and cause the MASTER to turn off the output.
m. The remote sensing function: Only the MASTER is functional; SLAVE is temporarily invalid.
n. When PR/PD is operated under the parallel mode and in the remote control through digital
interfaces, only MASTER can be operated and controlled by remote commands.
o. When changing the operation mode of the DC power supplies under parallel operation to a
single unit operation, please turn off the power. Also remove the wires that are connected
to APG connector and output connector wires. To change the PSOP (Parallel/Series
operation) to PM (parallel master) in the Menu.
Summary of Contents for Protek PD Series
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