GE 469 Manual

GE Power Management 469 Motor Management Relay 4-71
4 SETPOINT PROGRAMMING 4.11 S10 POWER ELEMENTS
4
4.11.6 TORQUE SETUP
Before torque can be determined, the motor stator resistance and number of pole pairs must be entered here.
The base stator resistance can be determined from the motor’s rated voltage and current. Torque metering is
intended for induction motors only, and only positive torque is calculated. Please consult the motor specifica-
tions for the stator resistance and the pole pairs.
The default unit for torque is the SI unit of Newton-meter (Nm). The torque unit is selectable to either Newton-
meter or foot-pound.
1 Nm = 0.738 ft·lb.
4.11.7 OVERTORQUE SETUP
Detection of a motor overtorque condition, usually done to protect devices driven by the motor, can be set up
here. The assigned relay activates when the torque measured exceeds the specified level for the specified
time duration.
y
TORQUE SETUP
y
[ENTER] for more
TORQUE METERING
Disabled
Range: Disabled, Enabled
STATOR RESISTANCE:
0.004
Ω
Range: 0.001 to 50.00
Ω,
step 0.001
POLE PAIRS:
2
Range: 2 to 128, step: 2
TORQUE UNIT:
Newton-meter
Range: Newton-meter, Foot-pound
y
OVERTORQUE
y
[ENTER] for more
OVERTORQUE
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS:
Alarm
Range: Alarm, Alarm & Auxiliary2, Alarm & Aux2 & Aux3,
Alarm & Auxiliary3, Auxiliary2, Aux2 & Aux3, Auxiliary3
OVERTORQUE ALARM
LEVEL: 4000.0 Nm
Range: 1.0 to 999999.9 Nm (or ft·lb), step 0.1
OVERTORQUE ALARM
DELAY: 1.0 s
Range: 0.2 to 30 sec., step 0.1
OVERTORQUE ALARM
EVENTS: Off
Range: On, Off
ENTER
ESCAPE
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ð
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NOTE
ENTER
ESCAPE
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GE 469 Specifications

General

Brand	GE
Model	469
Category	Relays
Language	English