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3-50
Overvoltage Protection in Auto-Series. Adjust
the GVP trip point in each supply to a voltage higher than the
voltage that supply will contribute. If the master supply OVP
trips, the master supply will program the slave supplies to zero
output. If a slave supply OVP trips, that slave supply and all
slave supplies between it and the negative end of the series
will go to zero output; all units more positive than the tripped
slave supply (which includes the master supply) will continue
to supply their set output voltage. Therefore, the total output
voltage of the auto-series combination will be the sum of the
outputs from the master supply plus any slave supplies be¬
tween the master supply and the tripped slave supply. For
maximum protection against overvoltage, set each unit's OVP
slightly higher («1.5 volts) than the voltage it will contribute.
For maximum protection against false tripping, set the slave
supply OVPs to maximum and adjust OVP at the master.
3-51
Auto-Series with Remote Voltage Sensing. To
combine auto series operation with remote voltage sensing,
connect the supplies as described above but remove the + S
jumper from the master supply and the - S jumper from the
most negative supply, and connect the + S and -
S
terminals
directly to the + and - ends of the load. Observe the precau¬
tions outlined under Paragraph 3-30.
3-53
Figure 3-9 shows the interconnections required to
operate two or more units in auto-tracking mode with a 6034A
as the master supply. This mode of operation allows multiple
supplies that share a common output bus (negative or
positive) to power separate loads and have their output
voltages simultaneously programmed by the voltage and cur-
Figure 3-10. Auto Tracking Operation, Positive and Negative Outputs
3 10
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