Figure 18 Measuring Vdc; Table 5 Wiring A 1000 Ω Temperature Sensor - Mircom OpenBAS-HV-NX10 Series Installation Manual

4.3.3 Resistive 1000 Ω Temperature Sensor
For resistive temperature sensors, the corresponding DIP switch must be ON. See section
3.5 on page 17. For all other devices, the DIP switch must be OFF.
Table 5 Wiring a 1000 Ω temperature sensor
Type of field device Power source
1000 Ω nickel or silicon
resistive temperature
sensor, for instance
OpenBAS-ACC-TE1K or
any PTC (positive
temperature coefficient)
thermistors
4.3.4 Measuring 24 VDC with Analog Inputs
If you want to measure 24 VDC voltages, add a 15 kΩ ½ Watt 1% resistor in series with the
higher voltage to be measured. See Figure 18.
Field Device
1-30 VDC

Figure 18 Measuring VDC

!
Caution:
4.3.5 Digital Inputs
The 8 universal inputs can receive digital signals. These are signals that represent only two
states.
The digital inputs have the following ranges:
• ZERO (0) is valid for an input voltage between 0 to 4 VDC
• ONE (1) is valid for an input voltage between 8 to12 VDC
N/A
+
-
You can measure up to 30 VDC. A higher voltage will damage the
controller.
Only DC voltages can be input to the universal inputs. Applying AC
voltages or inverting the polarity will provide incorrect readings, and
can eventually damage the inputs.
Wiring diagram
1000 Ω
resistive
temperature
sensor
1
2
Controller
UI#
0V
Field Wiring
Controller
UI#
0V
29 (45)