PWX
81
Master-Slave Parallel Operation
Parallel
/Series Operation
4
Connecting the load (parallel operation)
1
Turn off all the PWX series that you want to connect in parallel.
2
Remove the OUTPUT terminal covers.
3
Connect the load cables to the output terminals of the master unit and
the slave units.
4
Connect the load cables of the master unit and slave units to the load
through a relay terminal block.
Use load cables that have sufficient current capacity. Use load cables of equivalent
length and cross-sectional area to connect each power supply to the relay terminal
block, and wire the cables so that they are as short as possible (50 cm or less). Also,
make the connection from the relay terminal block to the load block as short as possi-
ble.
Wire the J1 connector signal cables and the load cables as far apart as possible.
5
Connect the output terminals (positive or negative) of the master unit
and the slave units to the chassis terminals.
Connect the same polarity output terminals on the master unit and slave units.
If you are using the units under floating conditions, do not connect the terminals.
WARNING
Risk of electric shock. Turn the POWER switch off before you touch the OUTPUT ter-
minals. Attach the OUTPUT terminal cover after you finish wiring the load.
CAUTION
• 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 prod-
uct’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.
Relay terminal
block
Load
Master unit
Slave unit 1
Slave unit 2
Output terminal
Chassis terminal
Output terminal
Chassis terminal
Output terminal
Chassis terminal
Load connections
for parallel opera-
tion (two slave
units)
See
Содержание PWX1500H
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Страница 89: ...Maintenance This chapter explains how to perform cali bration DELETE...
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Страница 93: ...Specifications This chapter contains the specifications and gives the dimensions of the PWX series...
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Страница 121: ...Appendix A Options B Troubleshooting...
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