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Chapter 4
Parallel/Series Operation
1.
Decide which RMX programmable power supply to use as the master unit.
2.
Connect the J1 connector on the rear panel of the master unit to the J1 connector on the rear
panel of the first slave unit.
If you are using the optional parallel operation signal cable (PC01, PC02, or PC03-RMX),
the connector is already assembled, so you can use it as is.
3.
Connect the J1 connector on the rear panel of the first slave unit to the J1 connector on the
rear panel of the second slave unit. If you are using the optional parallel operation signal
cable (PC01, PC02, or PC03-RMX), the connector is already assembled, so you can use it
as is.
If you have a third slave unit, connect it in the same manner.
Connecting the Load (Parallel Operation)
Caution
Risk of electric shock. Turn the POWER switch off before you touch the
OUTPUT terminals. Attach the OUTPUT terminal cover after you finish wiring the
load.
•
When you connect the output terminals to the chassis terminals, be sure to connect the same
polarity output terminals (positive or negative) of the master unit and the slave units to the
chassis terminals. If you connect different polarity output terminals of the master unit and
the slave units to the chassis terminal, the output will be grounded through the power
cable’s GND wire. Not only will this make the output incorrect, it will also cause the chassis
terminal cable to burn out.
•
When the load cables are distributed over longer distance, the phase shifting due to wiring
inductance and capacitance may go beyond the limit and result in oscillation. To prevent
such oscillation, connect an electrolytic capacitor with several hundreds to several tens of
thousands
μ
F across the load.
Use an electrolytic capacitor that has a withstand voltage that is at least 120% of the
product’s rated output voltage.
•
Twist the positive and negative cables together, and make the connection to the load as short
as possible. Oscillation may occur as a result of wiring inductance.