Distech Controls IO-R-16 Wiring Manual page 13

Wiring Details
Figure 8 Thermistor wiring.
Cut and tape shield wire back
at Thermistor.
10K Thermistor
Shielded, Twisted Cable,
61m (200 ft) maximum
Resistive 0—100K ohms
Inputs can read a resistive signal within a range from 0 to 100,000 ohms. Wiring is the same as shown for a
Thermistor temperature sensor
Resistive signals require a ResistiveInputPoint.
UI inputs provide optimum resistive-to-temperature resolution in the 10K ohm range. For a sensor with
Caution
a range far from 10K ohms (such as a 100-ohm or 1000-ohm sensor), resolution is so poor as to be
unusable
! To successfully use such a sensor, install a transmitter that produces a Vdc or mA signal,
and then wire the transmitter to the UI according to the
0 10 Vdc
–
Inputs support self-powered 0–10 Vdc sensors. Input impedance is greater than 5K ohms. 0–10 volt accuracy is
±2% of span, without user calibration.
0–10 Vdc sensors require a VoltageInputPoint.
–
Figure 9 0 10 Vdc wiring.
Range: 0–10 Vdc
Input Impedance > 5K ohms
0—10Vdc Sensor
(self-powered sensor)
+
0—10
Vdc
–
4 20 mA
–
Inputs support self-powered 4–20 mA sensors. Input accuracy is ±2% of span, without user calibration.
shows the wiring diagram, which requires a 499 ohm resistor wired across the input terminals.
4–20 mA sensors also require the VoltageInputPoint.
Remote IO-R-16 Module Mounting and Wiring Guide
U1 0V U2 U3 0V U4
Shield
(Figure 8).
Figure 9 shows the wiring diagram for a 0–10 Vdc sensor.
U1 0V U2 U3 0V U4
Cut and tape shield
wire back at sensor.
Shielded, Twisted Cable,
61m (200 ft) maximum
Use point: ThermistorInputPoint
Stud in enclosure
0–10 Vdc or
Use point: VoltageInputPoint
Conversion: Linear
Stud in enclosure
Shield
August 2, 2017
4–20 mA instructions.
Figure 10
Inputs
13