GE 469 Instruction Manual page 73

4 SETPOINTS
k) TACHOMETER
Õ×
PATH: SETPOINTS S3 DIGITAL INPUTS
n ASSIGNABLE INPUT 1
n [ENTER] for more
Once the tachometer function is chosen for one of the assignable digital inputs, the setpoint messages shown here will fol-
low the assignment message. The period of time between each switch closure measured and converted to an RPM value
based on one closure per revolution. A trip and alarm may be configured such that the motor or load must be at a certain
speed within a set period of time from the initiation of motor starting. The tachometer trip and alarm are ignored while the
motor is stopped. The RPM value may be viewed with the
For example, an inductive proximity probe or hall effect gear tooth sensor may be used to sense the key on the motor. The
probe could be powered from the +24 V from the input switch power supply. The NPN transistor output could be taken to
one of the assignable switch inputs configured as a tachometer.
GE Multilin
Courtesy of NationalSwitchgear.com
Õ×
ASSIGNABLE INPUT 1(4)
ð
INPUT 1 FUNCTION:
ENTER
ESCAPE Tachometer
RATED SPEED:
ESCAPE
3600 RPM
MESSAGE
TACHOMETER
ESCAPE
ALARM: Off
MESSAGE
ASSIGN ALARM RELAYS:
ESCAPE
Alarm
MESSAGE
TACHOMETER ALARM
ESCAPE
SPEED: 10% Rated
MESSAGE
TACHOMETER ALARM
ESCAPE
MESSAGE DELAY: 1 s
TACHOMETER ALARM
ESCAPE
EVENTS: Off
MESSAGE
TACHOMETER
ESCAPE
TRIP: Off
MESSAGE
ASSIGN TRIP RELAYS:
ESCAPE
Trip
MESSAGE
TACHOMETER TRIP
ESCAPE
MESSAGE SPEED: 10% Rated
TACHOMETER TRIP
ESCAPE
DELAY: 1 s
MESSAGE
A2 METERING
469 Motor Management Relay
4.4 S3 DIGITAL INPUTS
Range: See above. The following setpoints apply only if
INPUT 1(4) FUNCTION
Range: 100 to 7200 RPM in steps of 1. Only seen if
INPUT 1(4) FUNCTION
Range: Off, Latched, Unlatched. Only seen if
FUNCTION is "Tachometer"
Range: Alarm, Alarm & Auxiliary2, Alarm & Aux2 & Aux3,
Alarm & Auxiliary3, Auxiliary2, Aux2 & Aux3,
Auxiliary3. Only seen if
is "Tachometer"
Range: 5 to 100% in steps of 1. Only seen if
FUNCTION is "Tachometer"
Range: 1 to 250 s in steps of 1. Only seen if
is "Tachometer"
FUNCTION
Range: On, Off. Only seen if INPUT 1(4) FUNCTION
"Tachometer"
Range: Off, Latched, Unlatched. Only seen if
FUNCTION is "Tachometer"
Range: Trip, Trip & Auxiliary2, Trip & Aux2 & Aux3, Trip &
Auxiliary3. Only seen if
is "Tachometer"
Range: 5 to 95% in steps of 1. Only seen if
is "Tachometer"
FUNCTION
Range: 1 to 250 s in steps of 1. Only seen if
FUNCTION is "Tachometer"
Õ× Õ
actual value.
SPEED TACHOMETER
is "Tachometer".
is "Tachometer"
INPUT 1(4)
INPUT 1(4) FUNCTION
INPUT 1(4)
INPUT 1(4)
4
is
INPUT 1(4)
INPUT 1(4) FUNCTION
INPUT 1(4)
INPUT 1(4)
4-23