American Magnetics 12200PS DC Power Supply (CE-Marked) - Manual (Page 33)

INSTALLATION OPERATING MANUAL
2-18 Release 1.0 (98/07)
2.8.3 Using Remote Sensing
WARNING
There is a potential shock hazard at the sense points when using a power
supply with a rated output greater than 40V. Install a physical shield for the
sense connections at the load or at any other sense point chosen when
using a power supply with a rated output greater than 40V.
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.
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 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.
4. To prevent ground loops, ground the sense line shield, at one point only, to the power supply's return
output connection at the load, to the power supply's return output at its negative output terminal, or to
the power supply's chassis.
5. Turn the power supply ON.
Notes:
1. If you operate the power supply with remote sense lines connected to the load and with either of the
positive or negative load lines not connected, the power supply shutdown circuit will activate, causing
the output voltage and current to fall to zero.
2. If you operate the power supply without remote sense lines or local sense jumpers in place, the supply
will continue to work, but supply regulation will be degraded and/or erratic, or, the OVP circuit may
activate.
Figure 2.8-2 shows a sample setup for using remote sensing.