When the series tracking mode of operation is selected, the positive (red) terminal of
the SLAVE supply output is internally connected to the negative (black) terminal of the
MASTER supply.
In the series tracking mode, the maximum output voltage of both MASTER and
SLAVE supplies can be simultaneously varied with one control. The maximum SLAVE
supply voltage is automatically set to the same value as the MASTER supply by using the
MASTER VOLTAGE controls.
A. Set the power supplies to the TRACKING SERIES mode by engaging the left
TRACKING switch and release the right
TRACKING switch. In this case, the output voltage (across the two supplies) is
actually double the displayed value.
For example, if the MASTER display is set for voltage metering and the SLAVE
display for current metering, the output voltage across the MASTER positive (red) terminal
and the SLAVE negative (black) terminal would be double the reading on the MASTER
LED Display (since both supplies are putting out the same voltage). The actual output
current would be the value read from the SLAVE LED Display (since the two supplies are
wired in series, current flowing through each supply must be equal).
B . Set the SLAVE CURRENT control the fully clockwise position. The maximum
current is set using the MASTER CURRENT control. Follow the instructions for "Setting
Current Limit" (INDEPENDENT USE OF "MASTER" OR "SLAVE" SUPPLY section of
this manual, using the MASTER CURRENT control.
NOTE:
Because the supplies are being used in series, either CURRENT control can be used
to set maximum current. If desired, the MASTER CURRENT control can be rotated fully
clockwise and the SLAVE CURRENT control can be used to adjust the maximum current
value. Because current through the two supplies must be equal when they are being used in
series, the lower
CURRENT control setting will set the maximum output current.
C. Adjust the output voltage the desired level using the MASTER VOLTAGE controls.
D. Turn off the power supply and the equipment to be powered during hook-up.
E. If "single supply" operation is desired, this allows the power supply to be used as
twice the voltage and rating current simply by using the negative (black) terminal of the
SLAVE supply and the positive (red) terminal of the MASTER supply, the configuration as
shown in Fig.4-3.
4-4 Operation Mode
(1) Independent Operation
The "MASTER" and "SLAVE" supplies each provide a 0 to rating volts output at
up to rating amps. This procedure covers the use of the MASTER and SLAVE supplies only
when they are used independently from one another. When used in the INDEPENDENT
operating mode, the operating controls of the two power supplies are completely
independent and either supply can be used individually or both can be used simultaneously.
A. Disengage both TRACKING mode switches (both switches out) so that the power
Summary of Contents for Precision AC- DC Power Supply
Page 12: ...Fig 3 2 Rear Panel...
