Position Configuration; Position Application Example; Example Proximitor Specifications - GE Mark VIeS System Manual

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
explanation of how this value is calculated.
GnBiasOvride, Gain, Snsr_Offset – Refer to
SysLimit#, SysLim#Enabl, SysLim#Latch, SysLim#Type – Refer to

Position Application Example

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.
Scale Factor
Nominal Gap Setting
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
Gain/Bias Override.
System Limits
PR9L
PR9H

Example Proximitor Specifications

GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
Public Information
Keyphasor
feature.
PVIB/YVIB
200 ms (300RPM)
200mV/mil
50 mils
section for an