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2–24 TM-XDOP-01XN
Remote Sensing
The power supply regulates the output voltage at the output connectors in its
normal configuration without remote sense lines connected.
Remote sensing lets the power supply track and regulate the output voltage at the
load, and thereby compensate for the voltage drop in the load lines. The power
supply will only compensate within the limitations of its voltage rating, to a
maximum of 5V per load line. Remote sensing is normally only required for
critical loads which cannot tolerate the slight voltage drop in the load lines caused
by their resistance. Remote sensing has no effect when the power supply is
operating in Constant Current mode.
Two remote sensing connectors are located on the rear panel of the power supply.
See Figure 1-6 on page 1–11 for location and polarity. Connect 2 wires from these
ports to the load, where the power supply cables terminate for your connection.
Carefully observe the correct polarity when making the connection. On
12000 Watt units, connect the sense wires to the connector on the top or master
power module.
The remote sensing input is sensitive to electrical noise, so always use a shielded
twisted pair, 22AWG or greater for the sense line cable. Terminate the shield to
the supply chassis or the negative output of the power supply for best results.
TM-XDOP-01XN.book Page 24 Monday, July 17, 2006 11:19 AM