Curtis Instruments 1351 - Figure 5 Wiring for 3-Wire Potentiometer; Figure 6 Wiring for 2-Wire Potentiometer

6 — INITIAL SETUP & COMMISSIONING
Curtis Model 1351 – December 2018
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pg. 112
Status) is included in each of the analog input sub-menus. It is recommended each input be veried
as part of the initial setup.
Pot Inputs require setting the Type parameter. Do this rst, and then set the resistance and tolerance
parameters. Adjust these parameters based upon the in-menu Resistance and Wiper Position monitor
variables values. Figures 5 and 6 illustrate the wiring for 3-Wire and 2-Wire potentiometers.
RTD Inputs require their type be enabled and their input-resistance versus output-value mapped.
Once the system is operational, check the RTD’s corresponding monitor variables Resistance and
Value, making adjustments to the map values to achieve the correct response.
e two High Speed Digital Inputs parameters have a Type and Direction setting. Verify the RPM
output variable is correct once the system is operational. Oen, hand spinning of an encoder’s device
(e.g., motor) can be used to nalize the parameter settings.
Refer to these pages for the Input sub-menus.
Switches: p. 38 – 41
Virtual Switches: p. 42 – 43
Analog Inputs: p. 44 – 45
Pot Inputs: p. 46
RTD Inputs: p. 47 – 48
High Speed Digital Inputs: p. 49
Encoder Inputs: p. 50 – 51
Figure 5
Wiring for 3-Wire
Potentiometer
1kΩ–10k Ω
FASTER
I/O Ground (Pin 8)
Pot High output (Pin 21)
Pot Wiper input (Pin 20)
Figure 6
Wiring for 2-Wire
Potentiometer
I/O Ground (Pin 8)
Pot Wiper input (Pin 20)
5kΩ–0
FASTER