5-18
IM 253710-01E
Setting the current sensor transformation ratio
6.
Press the [Sensor Ratio(mV/A)] soft key.
7.
Turn the jog shuttle to set the transformation ratio.
For the procedures related to entering values using the jog shuttle, see section 4.1,
“Entering Values and Strings.”
Explanation
The output of current sensors such as shunts and clamps can be input to the current
sensor connector of the input module so that they can be measured.
Selecting the current sensor input connector
To measure the current using the input signal from the current sensor input connector,
[Sen] must be selected for the [Terminal] and then the current sensor range and
current sensor transformation ratio must be set.
Selecting the current sensor range
There are two types of ranges, fixed and auto.
• Fixed range
Select 1000mVpk, 400mVpk, 200mVpk, or 100mVpk.
• Auto range
Select [Auto] at the range setting to enable auto range. The range switches
automatically depending on the amplitude of the input signal. The conditions for
which the range changes and the precautions are the same as the description
given in section 5.3, “Setting the Measurement Range during Direct Input.” The
different ranges used in the auto mode are the same as those available for fixed
range selection as shown above.
Setting the current sensor transformation ratio
The ratio can be set in the range from 0.0001 to 99999.9999.
5.4 Setting the Measurement Range when Using an External Current Sensor