Remote Sensing - Delta D750 User Manual

User Manual
D750
DC Power Supply
Table 2-4: J2 terminals
Terminal
J2-1
J2-2
J2-3
J2-4
J2-5

2.9.3 Remote sensing

There is a potential shock hazard at the sense point when using power supply
with a rated output voltage greater than 40V. Ensure that the connections at the
load end are shielded to prevent accidental contact with hazardous voltages.
Use remote sense where the load regulation at the load end is critical. In remote sense, the
power supply will compensate for voltage drop on the load wires. Refer to the power supply
specifications for the maximum voltage drop on load wires. The voltage drop is subtracted
from the total voltage available at the output. Follow the instructions below to configure the
power supply for remote sensing:
1. Ensure that the AC On/Off is in the Off position.
2. Remove the local sense jumpers from J2.
3. Connect the negative sense lead to terminal J2-5 (-S) and the positive sense lead to
terminal J2-1(+S) of the J2 mating connector. Ensure that the J2 mating connector is
plugged securely into the rear panel sense connector, J2.
4. Turn On the power supply.
Notes:
1. If the power supply is operated without the remote sense lines or local sense jumpers, it
will continue to work, but the output voltage regulation will be degraded. Also, the OVP
circuit may activate and shut down the power supply.
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Function
Remote positive sense (+S).
Local positive sense. Connected internally to the positive output terminal (+LS).
Not connected (NC).
Local negative sense. Connected internally to the negative output terminal (-LS).
Remote negative sense (-S).
When using shielded sense wires, ground the shield
in one place only. The location can be the power
supply chassis or one of the output terminals.
WARNING
CAUTION