CFS300 SERIES OPERATION MANUAL
SECTION 5: UNPACKING & INSTALLATION
Entire Contents Copyright
2016 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
APS CFS300 Series Power Source Operation Manual
Page 50 of 156
5.12.4
Voltage Sense Modes
The CFS300 series supports both internal voltage sense and external voltage sense mode.
For light loads, internal sense may be used as the voltage drop across the load wires will be
minimal with low load currents. In internal sense mode, the power source senses its output
voltage at the rear panel output terminal block. No external sense lines need to be
connected to the
V Sense
connector on the rear panel in this mode.
When using internal sense mode, make sure the load is not too far from the power source
so the load wires are relatively short.
For larger loads or in situations where the load cannot be placed close to the power source,
external voltage sense mode should be used.
The sense mode can be selected from the System menu. Refer to Section 7.10.1, “PROGRAM
Mode System Settings” for details.
When using external sense mode, the sense lines must be connected from the rear panel V-
Sense terminal block to the load. Sense inputs are marked A, B, C and N from top to
bottom. Sense wires do not carry load current, so they don’t require the same wire gauge as
the load wires.
Note:
Always twist sense wires together as the voltage sense input is high impedance and
is prone to picking up noise. Twisting sense wires will reduce some of the
differential mode noise.
Figure 6-9: External Voltage Sense Terminal Block Location