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Isolated external voltage and current monitoring – GW Instek PSU-Series User Manual User Manual

Page 153

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ANALOG CONTROL

153

Note

Use a stable current source for the external current
control.

Note

CV and CC Slew Rate Priority are disabled for V-I
mode (F-03) when using external voltage control.
See the normal function settings on page 99.

CAUTION

Ensure the polarity is correct when connecting the
external voltage.

Ensure no more than 21mA are input into the
external current input.

Isolated External Voltage and Current Monitoring

Background

The isolated analog connector can also be used
to monitor the current (IMON) or voltage
(VMON).

For the isolated voltage option, an output of
0~5V or 0~10V represents the voltage or current
output of 0~ rated current/voltage output.

IMON = (current output/full scale) × (5 or
10)

VMON = (voltage output/full scale) × (5 or
10)

For the isolated current option, an output of
4~20mA represents the voltage or current
output of 0~ rated current/voltage output.

IMON = ((current output/full scale) ×
16mA) + 4mA

VMON = ((voltage output/full scale) ×
16mA) + 4mA