
CM0504 User Guide
37
To•make•the•CM0504•measure•resistance•accurately,•do•the•following:
•
•
Include•a•precision•pull-up•resistor•between•the•sensor•and•the•sensor•power•output•(called•
SENSOR_SUPPLY).
•
•
Ensure•the•value•of•the•precision•resistor•allows•the•maximum•possible•resolution•for•the•sensor’s•
input.
•
•
Dimension•the•precision•resistor•to•get•the•maximum•voltage•range•from•the•sensor.
Note:
•Variable•resistance•sensor•accuracy•may•suffer•at•the•extremes•of•the•sensor’s•range.•A•tolerance•
analysis•should•be•performed•to•ensure•measurement•accuracy•is•acceptable•for•your•application.
The•following•shows•a•typical•variable•resistance•sensor•connection:
Internal to product
Analog Input
Sensor Power
Variable
Resistance
Sensor
Precision
Resistor
Figure 10.7. Variable resistance sensor connection
10.5.3. Variable Reluctance
Variable•reluctance•sensors•are•typically•used•in•frequency•measurement•applications,•and•are•
compatible•with•AC-coupled•frequency•inputs.
•
Variable•reluctance•sensors•do•not•require•power•(the•power•is•induced),•and•they•create•frequency•by•
out-putting•a•sine•wave•type•signal.•They•work•by•using•an•increase•or•decrease•in•a•magnetic•field•to•
detect•the•proximity•of•a•part•or•device.
Содержание CM0504
Страница 1: ...CM0504 User Guide Controller Module Effective April 2019 Supersedes UG CM0504 1038000 201808 007...
Страница 10: ...CM0504 User Guide 3 Symbol Meaning Pull up resistor Battery Fuse Resistor Ground Chassis ground...
Страница 16: ...CM0504 User Guide 9 J4 Connector Pinout Pin I O Name Function 1 VBATT Positive battery terminal HS output power...
Страница 52: ...CM0504 User Guide 45 Figure 11 3 Install S W button Figure 11 4 Software file dialog box...