Bently Nevada 3300/50, Operation Manual, Page: 50 / 122

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Tachometer Maintenance
83871-01
5 J F R O N T P A N E L ( Z E R O S P E E D T A C H O M E T E R ) I
TOP D I S P L AY I N D I C AT E S
ROTOR SPEED I N RPM
ZERO SPEED TACHOMETER
INDICATOR ( A LWAY S O N )
TRANSDUCER A
TRIGGER O K L E D
ZERO SPEED A L E RT L E D
3300/50
TACHOMETER
3 6 0 0
RPM
ZERO SPEED
ENABLED
ALERT
WARNING
M E SECOND DELAY
ON RNA SET POINTS
0 0 NOT 0 5 e FOR
OVERSPEED
PROTECT ION
SEE MANUAL
AM=111111111111116.
0 T R I G G E R 0 B
OK
OFF BELOW I R N A
ZERO SPEED BYPASS L E D i
C)
0 0
READ ZERO SPEED
ALERT S E T P O I N T
BNC CONNECTORS FOR
BUFFERED TRANSDUCER
OUTPUT
A
ALERT
BYPASS
ALERT
0
ZERO SPEED ENABLED
INDICATOR
(CONTACTS CLOSED)
ZERO SPEED A L E RT
SETPOINT I N D I C AT O R
TRANSDUCER B
TRIGGER O K L E D
RPM A L E RT L E D
C) R
4 ; , _ _ - - - - R P M BYPASS L E D
GAP
RPM
B
BUFFERED TRANSDUCERS
„ . . . . . „ , - R E A D RPM A L E RT
SETPOINT
R E A D TRANSDUCER
GAP VOLTAGE
5