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
section for an
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
PVIB/YVIB
2
V
p
p
(-
9
.5
V
d
c
)
PR9L
PR9H
200 ms (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.
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GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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