7-2. Parallel Master-Slave Operation
In PS-A power supply units, only models that have the same rated output voltage can be used for parallel master-slave
operation. This means that models with different rated output power can be connected as long as they have the
same rated output voltage. For example, a 400W model and a 1200W model can be used together for parallel
master-slave operation. In parallel master-slave operation, the total rated power sum can be no more than 2400W.
However, the total rated power sum can be no more than 800W for models with a rated output voltage of 6V.
Do not connect models with different rated output voltage for parallel master-slave operation. Doing so may cause
the unit to malfunction.
One PS-A power supply unit should be configured as the parallel master unit, and the other units as the parallel slave
units.
Precautions for connecting the master unit and slave units:
・
DO NOT use OP-23S. This cable is used for serial master-slave operation.
If the OP-23S cable is used, the control signals from slave units will become
unstable and slave units may reach maximum output. This may cause the unit
to malfunction or destroy the load.
・
Use low-resistance cables to connect to the positive and negative output
terminals of the master and slave units.
If there is large potential difference between the output terminals of the master
and slave units, particularly the negative terminals, there may be a difference
etween the actual current and the current displayed.
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