Bently Nevada 3300/50, Operation Manual

Page: 91 / 122

Tachometer Maintenance
26 I Test Trigger OKs
PROXIMITOR A
0 0
PROXIMITOR B
SIGNAL I N P U T
RELAY MODULE
KEYPHASOR O R GEAR
1. Disconnect the COM and IN wiring from the Transducer
A terminals on the Signal Input Module.
2. Verify that the TRIGGER OK A LED turns off.
NOTE: With low RPMs at one event per revolution, it may
take up to one minute for the TRIGGER OK LED to indicate
NOT OK.
3. Reconnect the COM and IN wiring from the Transducer
A terminals on the Signal Input Module.
4. Verify that the TRIGGER OK A LED turns back on.
NOTE: With low RPMs at one event per revolution, it may
take up to several minutes for the TRIGGER OK LED to
indicate OK.
83871-01
CAUTION
Machine Protection could
be lost during t h e Test
Trigger OKs Procedure.
A\WARNING
High Voltage present
could c a u s e s h o c k ,
bums or death.
Do Not touch exposed
wires or terminals.
e " " ' 5 1
TACHOMETER
lummmmilmw
3600
RPM
SEE MANUAL
A 0 :VIVA= • e
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