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Installation
Local and Remote Sensing
Release 2.1 55
Using
Remote
Sensing
Use remote sensing during voltage mode operation to shift the power supply’s
regulation point from its default position at the rear panel output terminals to the load
or distribution terminals by using a separate pair of wires to allow the control
circuitry to monitor the load voltage. This allows the power supply to compensate
for voltage losses in the load lines which will otherwise degrade the regulation of the
supply. Line drop is subtracted from the voltage available at the power supply's
output.
To connect remote sense lines:
1. Turn OFF the power supply.
2. Remove the local sense jumpers connecting J10 mating connector terminal 5
(positive sense) to terminal 4 (positive output) and terminal 1 (return sense) to
terminal 2 (power supply return).
3. Connect the positive remote sense lead to J10 mating connector terminal 5
(positive sense) and the negative lead to terminal 1 (return sense). Ensure that
the mating connector is plugged securely into the rear panel sense connector.
Connect the other ends of the sense wires to the corresponding sense points at
the load.
WARNING
There is a potential shock hazard at the sense points when using a power supply
with a rated output greater than 40 V. Ensure that connections at the load end
are shielded to prevent contact with hazardous voltages.
WARNING
Ensure that the chassis ground screw does not penetrate more than 3/8 in.
(9 mm) into the rear panel of the unit.
!
CAUTION
Ground the sense line shield in one place only. Locations include: the power
supply’s return output connection at the load, the power supply’s return output at
its negative output terminal, or the power supply's chassis.
!
CAUTION
Do not use remote sensing with multiple supplies connected in series.