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4. Advanced Operation
PROGRAMMABLE AC POWER SOURCE 158
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.
However, in case the stand-by state of sequence mode (step0) effective only for AC-INT, ACDC-INT
and DC-INT and when the waveform is sine wave or DC. Remote sensing cannot be set to either ON
or FB unless either AC voltage or DC voltage setting is 0 V for ACDC-INT. Also, if the Remote
sensing is ON, the Remote sensing is turned OFF once when you change ACDC mode from AC
mode of DC mode even in stand-by state. Turn ON it again when you need.
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
External control
Remote
sensing
Voltage feedback
detection point
Measurement
voltage, power, power factor
AGC / Autocal
setting
Enable/Disable
ON
Inside
(output terminal)
Use the sensing input terminal voltage
Enable
OFF Use the output terminal voltage
DevCtrl
ON Use the sensing input terminal voltage
OFF Use the output terminal voltage
FB
Outside
(sensing input
terminal)
Use the sensing input terminal voltage Disable
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Notes
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 The on/off state of the Remote sensing function is kept even if the output range is changed.
However, the Remote sensing function is set to off, if the output phase configuration 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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