Powerten D3 Series, Operation Manual

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3.8 AUTO-PARALLEL OPERATION
In the auto-parallel mode of operation, a master/slave configuration is established.
Up to four power supplies may be paralleled using this configuration.
CAUTION
When using two supplies in parallel, damage
may occur to slave(s) crowbar circuits if slave
overvoltage level set is not higher than the
master overvoltage level set. To prevent
damage, apply a 6 VDC source between J1-3
(REM OV SET) and J1-6 (COM), or set all slave
units overvoltage setting to maximum and set
the master unit to the desired trip level. If
overvoltage protection is not desired, set to trip
at maximum rated voltage.
To set up the auto-parallel mode of operation, connect all outputs in parallel to the
load. Connect jumper from master J1-7 (I MON) to slave J1-16 (IP 10V), and the
slave J1-6 (COM) must be connected to the slave J1-25 (IP RTN). Always set the
slave overvoltage to maximum and the master to the desired trip level. Output
currents will track automatically. If tracking is not close, perform the calibration
procedures listed in Chapter 4. See Figure 3-12 for connection requirements.
3.9 AUTO-SERIES OPERATION
In the auto-series mode of operation, a master/slave configuration is established. No
more than two power supplies may be in series. With two supplies connected in
series, one is established a master and the remaining unit as a slave. The master
supply must always be the most positive unit. Connect Rx between the master
positive output and the slave J1-15 (VP 10V), and connect the slave J1-20 (VP RTN)
to the slave J1-6 (COM). When operating in the auto-series mode, current control
potentiometers of the slave units are active and should be set to maximum clockwise
position. See Figure 3-13 for connection requirements and Rx value.
Under no condition should the negative terminal of either supply be greater than 150
volts, positive or negative, from chassis potential.
3.10 AUTO-TRACKING OPERATION
In the auto-tracking mode of operation, a master/slave configuration is established.
Up to four power supplies may be connected in the auto-parallel configuration. In this
configuration, two or more supplies may be connected with common negative
outputs. The slave(s) output voltage is a percentage of the master as controlled by
the value of Rx. Individual current controls on both master and slave(s) remain
active. See Figure 3-14 for connection requirements.
M550001-01
3-8