Using Remote Sensing Function; Table 4-11 Setting Pattern Of External Control, Remote Sensing And Agc / Autocal - NF DP420LS Instruction Manual

4.11

Using Remote Sensing Function

The Remote sensing function detects the output voltage at the sensing input terminal. You can select
ON / OFF / FB.
When setting Remote sensing to ON or FB, the measured value of voltage is the voltage at the
sensing input terminal, and the item symbol is displayed as "SV" on the panel display. The measured
values of power (P, S, Q) and power factor (PF) are also the values that are calculated using the
measured voltage value at the sensing input terminal. However, their item symbols on the panel
display are not changed.
Remote sensing ON or FB setting can be selected in the AC-INT, AC-VCA, AC-SYNC, DC-INT,
and DC-VCA modes. For in the AC mode, it can be selected only when the waveform is a sine wave.
When the Remote sensing state is ON or FB, the waveform cannot be changed to other than a sine
wave. Changing to ACDC mode, changing to EXT or ADD, selecting to sequence function or
simulation function is possible, but Remote sensing function is forcibly set to OFF.
When the Remote sensing state is ON, the output voltage at the sensing input terminal is calibrated
by the AGC or Autocal function. Thus, by combining the Remote sensing function with the
AGC/Autocal function, you can compensate the voltage drop due to wiring to the load.
When the Remote sensing state is FB, the voltage feedback detection point is changed from inside
(output terminal) to outside (sensing input terminal), and AGC or Autocal cannot be set. Remote
sensing can be set to FB only when DIP or RIN is connected and the function of external control is
set to DevCtrl. For external control see 4.18 and for DIP or RIN see 8.2.

Table 4-11 Setting pattern of external control, Remote sensing and AGC / Autocal

Remote
External control
ON
Enable/Disable
OFF
ON
OFF
DevCtrl
FB
-------- Notes ------------------------------------------------------------------------------------------------------------
 The on/off state of the Remote sensing function is kept even if the output range is changed.
 When the Remote sensing function is forcibly set to off, the settings saved in the System
Setting Memory are not updated.
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CAUTION
 When setting Remote sensing to FB, the load cable connected to the output terminal should be
as short as possible (3 m or less) with twisted or parallel wire.
DP420LS/DP480LS
Voltage feedback
sensing detection point
Inside
(output terminal)
Outside
(sensing input
terminal)

4.11 Using Remote Sensing Function

Measurement
voltage, power, power factor
Use the sensing input terminal voltage
Use the output terminal voltage
Use the sensing input terminal voltage
Use the output terminal voltage
Use the sensing input terminal voltage
AGC / Autocal
setting
Enable
Disable
147