5-1
IM WT1801-01EN
5 Auxiliary Input Conditions (Option)
Auxiliary Input Conditions (MOTOR/AUX SET)
You can apply the signals of sensors, such as luminance, wind-power, or temperature sensors, to the AUX1 and
AUX2 connectors, and display the physical values measured by the sensors. You can configure the following
auxiliary input settings.
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Linear scaling of analog input
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Input Signal Name (Aux Name)
• Number of characters: Up to eight
• Usable characters:
Spaces and all characters that are displayed on the keyboard
Scaling Factor (Scaling)
You can set the factor for scaling the auxiliary input. Set the factor to a value from 0.0001 to 99999.9999.
This setting is used as the scaling factor in the equation for the linear scaling of analog input.
Unit (Unit)
This setting is the same as the input signal name (Aux Name) setting.
Analog Input Range
Set the auxiliary input (analog input) range.
Turning Auto Range On and Off (Analog Auto Range)
Select whether to turn auto range on or off. When auto range is on, the WT1800 automatically switches between
the following ranges according to the size of the auxiliary input.
20 V, 10 V, 5 V, 2 V, 1 V, 500 mV, 200 mV, 100 mV, and 50 mV
Range Increase
• The measurement range is increased when the auxiliary input exceeds 110% of the measurement range.
• The measurement range is increased when the peak value of the auxiliary input exceeds 150% of the
measurement range.
Range Decrease
The measurement range is decreased when auxiliary input falls below 30% of the measurement range and the
peak value of the auxiliary input is less than 125% of the lower range.
When non-periodic pulse waveforms are applied during auto range, the range may not remain constant. If this
happens, use the fixed range setting.
Fixed Range (Analog Range)
You can select one of the following input ranges.
20 V, 10 V, 5 V, 2 V, 1 V, 500 mV, 200 mV, 100 mV, and 50 mV
