DynaGen Tough Series, User Manual

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Installation 14
© 2019 DynaGen Technologies Inc
TOUGH Series Manual
2.6.3
Universal Sensor
Universal Sensors have the ability to be configured to detect different sender types (0 - 750Ohm, 0 - 7,500Ohm, 0 - 5 VDC, 4 -
20mA). The examples shown below are advanced applications of the universal sensor.
NOTE : Custom Sensor tables are required for the universal sender to work with these examples. See the Custom
Sender Table section for more information.
Example #1: The following example shows the correct way for wiring a 4-20mA sensor. The 240Ohm resistor is required to
transform the 4-20mA current into the 0-5V voltage range required by the controller.
4-20mA Wiring Example
Example #2: Sometimes it is required to measure voltages outside the 0-5V range allowed by the controller. To do this you
must use a voltage divider with appropriate scaling resistors. The equation to calculate the resistor values is as follows:
Vout = 5V
Vin = Maximum Voltage to Read
R1 = Common Resistor Value > 10kOhm
R2 = Calculated Resistor Value (Select closest common resistor value)
The following diagram shows the typical wiring of a voltage divider. The resistors' values have been selected to allow the
controller to read up to 36V from an external battery bank.
0-36V Wiring Example
NOTE : A TVS (i.e. varistor) is required if the battery is different than the battery the controller is powered from. The
controller's TVS cannot protect the sensor input from transients in this case.