Position Configuration
GAPn_VIBn, GAPn_POSy, GAPn_KPH#:
VibType - PosProx is used for Position applications.
Scale – Conversion from Volts to engineering units (EU). Typically, units are Volts/mils.
Scale_Off is a scale offset parameter used to remove the nominal Gap value from the measured Gap value. Units are
engineering units (EU).
TMR_DiffLimt is a TMR voter disagreement detection diagnostic alarm threshold for GAPn_VIBn, GAPn_POSy, or
GAPn_KPH# value. The keyphasor value is expressed as absolute difference in EU. Refer to the Keyphasor section for an
explanation of how this value is calculated.
GnBiasOvride, Gain, Snsr_Offset – Refer to Gain/Bias Override.
SysLimit#, SysLim#Enabl, SysLim#Latch, SysLim#Type – Refer to System Limits feature.
Position Application Example
PVIB/YVIB
2Vpp
(-9.5Vdc)
PR9L
PR9H
200ms (300RPM)
Proximitor voltage inputs to a YVIB application are measured at the terminal board screws. Assume this sensor is connected
to Channel 9 as a PosProx input.
Example Proximitor Specifications
Scale Factor 200mV/mil
Nominal Gap Setting 50 mils
Channel 9 is configured for the following behaviors:
• Return GAP9_POS1 as mils.
• Remove the nominal Gap value from GAP9_POS1.
• Set SysLim1GAP9 to LATCH True if GAP9_POS1 ≥ 5 mils.
• Set SysLim2GAP9 to LATCH True if GAP9_POS1 ≤ -5 mils.
244 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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