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I/O Variable Name, VIBx
JPxA jumper is in the “P,A” position providing a +28 V weak pull-up for sensor failure detection and the JPxC jumper is in
the “PCOM” position to provide a closed circuit for the -28 V power applied to the sensor through the WNPS -28 V
daughterboard for TVBAH#A or TVBAS#A terminal boards only. JPxB is set in the 'PVA' position.
8.5.2.2
Seismic Sensors
The TVBA can input a maximum of eight seismic sensor inputs on channels 1 through 8. Seismic sensors are usually
moving-coil type probes that require no power. The heavy-duty gas turbines (HDGTs) use the Metrix 5235B, 5475C or 5485C
sensors on the bearing housings to measure the non-rotating vibration. The Metrix 5485C or similar sensor’s output is
connected directly to the PRxxH and PRxxL inputs. The seismic output is centered at 0 V dc. With a sensitivity range of 100
to 200 mV/in/sec. Tie the shield on the Mark VIeS end and leave the shield open on the sensor side.
Seismic
5485C
Transient
Suppression
Transient
Suppression
N24xx
Transient
Suppression
PCOM
OPEN
PRxxH
PRxxL
PCOM
3.6mA
V
S
P,A
+28V
-28V
YVIB /
PVIB
Vibration
Inputs
Vib: 1 – 8
Tracking
Filter: 1 - 3
Shield
Not Used
JPxA
JPxC
-28V to -24V Regulator
with current limit
-28V
JPxA jumper is in the ‘S’ position providing a -28 V weak pull-down for sensor failure detection and the JPxC jumper is in
the ‘PCOM’ position to allow the corresponding buffered output to be scaled the same as the signal input.
JPxB is set in the ‘S’ position.
YVIB Vibration Monitor Modules
GEH-6855_Vol_II System Guide 277
Public Information
Содержание Mark VIeS
Страница 16: ...Notes 16 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 84: ...Notes 84 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
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Страница 130: ...Notes 130 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 145: ...TRLYS1B Terminal Board Wiring YDOA Discrete Output Modules GEH 6855_Vol_II System Guide 145 Public Information ...
Страница 153: ...TRLYS1D Circuits TMR YDOA Discrete Output Modules GEH 6855_Vol_II System Guide 153 Public Information ...
Страница 157: ...TRLYS1F Terminal Board Wiring YDOA Discrete Output Modules GEH 6855_Vol_II System Guide 157 Public Information ...
Страница 210: ...210 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 226: ...Notes 226 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 284: ...Notes 284 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 369: ...JPDE Photo PDM Power Distribution Modules GEH 6855_Vol_II System Guide 369 Public Information ...
Страница 396: ...JGND Mounting 396 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 440: ...Notes 440 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 476: ...Notes 476 GEH 6855_Vol_II GEH 6855_Vol_II Mark VIeS Functional Safety Systems Volume II Public Information ...
Страница 485: ......
Страница 486: ...Public Information ...