Multilin 469 Motor Management Relay ... - GE Digital Energy
Multilin 469 Motor Management Relay ... - GE Digital Energy
Multilin 469 Motor Management Relay ... - GE Digital Energy
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CHAPTER 5: SETTINGS<br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
MESSA<strong>GE</strong><br />
TACHOMETER<br />
ALARM: Off<br />
ASSIGN ALARM<br />
RELAYS:<br />
TACHOMETER ALARM<br />
SPEED: 10% Rated<br />
TACHOMETER ALARM<br />
DELAY: 1 s<br />
TACHOMETER ALARM<br />
EVENTS: Off<br />
TACHOMETER<br />
TRIP: Off<br />
ASSIGN TRIP<br />
RELAYS:<br />
TACHOMETER TRIP<br />
SPEED: 10% Rated<br />
TACHOMETER TRIP<br />
DELAY: 1 s<br />
These settings apply only if the INPUT 1(4) FUNCTION is “Tachometer”.<br />
Range: Off, Latched, Unlatched<br />
Range: Alarm, Alarm & Auxiliary2,<br />
Alarm & Aux2 & Aux3, Alarm &<br />
Auxiliary3, Auxiliary2, Aux2 &<br />
Aux3, Auxiliary3, None<br />
Range: 5 to 100% in steps of 1<br />
Range: 1 to 250 s in steps of 1<br />
Range: On, Off<br />
Range: Off, Latched, Unlatched<br />
Range: Trip, Trip & Auxiliary2, Trip &<br />
Aux2 & Aux3, Trip & Auxiliary3<br />
Range: 5 to 95% in steps of 1<br />
Range: 1 to 250 s in steps of 1<br />
Once the tachometer is chosen for a digital input, the settings shown here follow the<br />
assignment message. The period of time between each switch closure is measured and<br />
converted to an RPM value based on one closure per revolution.<br />
A trip and alarm may be configured such that the motor or load must be at a certain speed<br />
within a set period of time from the motor starting. The tachometer trip and alarm features<br />
are configured such that the specified speed (TACHOMETER TRIP SPEED or TACHOMETER<br />
ALARM SPEED) must be reached in the specified time (TACHOMETER TRIP DELAY or<br />
TACHOMETER ALARM DELAY), otherwise the element operates. Initially, the time delay<br />
begins when the motor is started and resets when the desired speed is reached. Once the<br />
motor is running and the speed drops below the set threshold, the time delay restarts and<br />
the designated output contact will operate if the motor fails to reach the set speed in the<br />
allotted time. This element is active when motor is running and ignored while the motor is<br />
stopped. The RPM value may be viewed with the A2 METERING SPEED TACHOMETER<br />
actual value.<br />
For example, an inductive proximity probe or hall effect gear tooth sensor may be used to<br />
sense the key on the motor. The probe could be powered from the +24 V from the input<br />
switch power supply. The NPN transistor output could be taken to one of the assignable<br />
switch inputs configured as a tachometer.<br />
<strong>469</strong> MOTOR MANA<strong>GE</strong>MENT RELAY – INSTRUCTION MANUAL 5–31
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