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Dual Valve Position Indicator Maintenance
84608-01
I 9 I LV D T PRIMARY WIRING OK TEST
TO
L V D T
LW elltt I O N M I M S
C1-11
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am 1 0 1
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imicArmi
1044 -
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IL-41 Ric -M-
i n i I n
SIGNAL
INPUT MODULE
LVDT Open Primary OK Test
CAUTION
Tests will cause valve indication on
tested channel to be invalid. Only if
Timed O K / Channel Defeat i s
enabled will the Not OK channel's
bargraph be clamped to zero.
/!\ WARNING
High Voltage present
Could cause shock, bums
or death.
Do Not touch exposed
wires or terminals.
1. With both transducers connected verify the
OK
LEDs are ON. If
only one channel i s being used, B y p a s s the unused channel
(section 8).
2. Disconnect the "1 (CCW)" wire o r the "4 (CW)" wire from the
Channel A terminal on the Signal Input Module or at the LVDT.
3. Verify that the OK LED for Channel A is off and that the OK Relay
is de-energized. Note: All other channels in the rack must be in OK
or Bypassed in order for the relay to change state.
4. Re-connect the "1 (CCW)" wire or the "4 (CW)" wire to Channel A
and verify the
OK LED comes ON and
the OK Relay is energized.
System reset is required if the indicator is configured for Latching
OKs or
Timed
OK / Channel Defeat.
5. Repeat the above for Channel B.
e
" 6 . 4 .
D U A l . V A L V E P O S T I M
[4.)1 cAToR
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