24
PWX
Sensing
Local sensing
By factory default, the PWX series is set to local sensing (the rear panel sensing connector is
hard wired). The sensing point during local sensing is the output terminal. This method does
not compensate for the voltage drop in the load cable, so use this method when the load cur-
rent is small or when you do not need to consider the load effect voltage.
Remote sensing
Remote sensing is a feature that stabilizes the output voltage across the load by reducing the
influence of voltage drops and other effects caused by the load cable resistance.
You can use the PWX series remote sensing feature to compensate up to 4 V for a single
line. Select a load cable that has sufficient current capacity to prevent the voltage drop in the
load cable from exceeding the compensation voltage.
When you perform remote sensing, set the voltage of the sensing point (across the load) so
that it does not exceed the rated output voltage. If you are performing remote sensing with
the voltage close to the maximum output voltage, the output is limited by the maximum output
voltage (105 % of the rated output voltage). Electrolytic capacitors may be required at the
sensing point (across the load).
To reduce the effect of noise, use twisted-pair wires or 2-core shielded wires. When you are
using shielded wires, connect the shield to the ground of the PWX series or the load.
+
–
+LS
+S
-LS
-S
Output terminal
Chassis terminal
Sensing terminal
PWX
Load
Use twisted-pair wires for the load cables.
Make the cables as short as possible.
See
+
+
–
–
C
+LS
+S
-LS
-S
Connect an
electrolytic
capacitor
across the load
as necessary.
Output terminal
Chassis terminal
Sensing terminal
PWX
Load
Use twisted-pair wires for the load cables.
Make the cables as short as possible.
For the sensing cables, use twisted-pair
wires or shielded wires.
Содержание PWX1500H
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