GE 469

GE Power Management 469 Motor Management Relay
iii
TABLE OF CONTENTS
4.5.2 RELAY RESET MODE ........................................................................... 4-24
a RESETTING THE 469............................................................................. 4-24
b EXAMPLE................................................................................................ 4-24
4.5.3 FORCE OUTPUT RELAY ....................................................................... 4-25
4.6 S5 THERMAL MODEL
4.6.1 MOTOR THERMAL LIMITS..................................................................... 4-26
4.6.2 469 THERMAL MODEL .......................................................................... 4-28
4.6.3 OVERLOAD CURVE SETUP ................................................................. 4-29
a FUNCTION .............................................................................................. 4-31
b CUSTOM OVERLOAD CURVE............................................................... 4-31
c VOLTAGE DEPENDENT OVERLOAD CURVE ...................................... 4-35
4.6.4 UNBALANCE BIAS.................................................................................. 4-42
4.6.5 MOTOR COOLING.................................................................................. 4-43
4.6.6 HOT/COLD CURVE RATIO..................................................................... 4-44
4.6.7 RTD BIAS ................................................................................................ 4-44
4.7 S6 CURRENT ELEMENTS
4.7.1 SHORT CIRCUIT..................................................................................... 4-46
4.7.2 OVERLOAD ALARM................................................................................ 4-47
4.7.3 MECHANICAL JAM ................................................................................. 4-47
4.7.4 UNDERCURRENT................................................................................... 4-48
a FUNCTION .............................................................................................. 4-48
b EXAMPLE................................................................................................ 4-48
4.7.5 CURRENT UNBALANCE ........................................................................ 4-49
a FUNCTION .............................................................................................. 4-49
b EXAMPLE................................................................................................ 4-49
4.7.6 GROUND FAULT..................................................................................... 4-50
4.7.7 PHASE DIFFERENTIAL.......................................................................... 4-52
4.8 S7 MOTOR STARTING
4.8.1 ACCELERATION TIMER......................................................................... 4-53
4.8.2 START INHIBIT ....................................................................................... 4-54
a FUNCTION .............................................................................................. 4-54
b EXAMPLE................................................................................................ 4-54
4.8.3 JOGGING BLOCK ................................................................................... 4-55
a FUNCTION .............................................................................................. 4-55
b STARTS / HOUR ..................................................................................... 4-55
c TIME BETWEEN STARTS ...................................................................... 4-55
4.8.4 RESTART BLOCK................................................................................... 4-56
4.9 S8 RTD TEMPERATURE
4.9.1 RTD TYPES............................................................................................. 4-57
4.9.2 RTDS 1 TO 6 ........................................................................................... 4-58
4.9.3 RTDS 7 TO 10......................................................................................... 4-59
4.9.4 RTD 11..................................................................................................... 4-60
4.9.5 RTD 12..................................................................................................... 4-61
4.9.6 OPEN RTD SENSOR.............................................................................. 4-62
4.9.7 RTD SHORT/LOW TEMP........................................................................ 4-62
4.10 S9 VOLTAGE ELEMENTS
4.10.1 UNDERVOLTAGE ................................................................................... 4-63
4.10.2 OVERVOLTAGE...................................................................................... 4-64
4.10.3 PHASE REVERSAL................................................................................. 4-64
4.10.4 FREQUENCY .......................................................................................... 4-65
4.11 S10 POWER ELEMENTS
4.11.1 POWER MEASUREMENT CONVENTIONS........................................... 4-66
4.11.2 POWER FACTOR.................................................................................... 4-67
4.11.3 REACTIVE POWER ................................................................................ 4-68
4.11.4 UNDERPOWER....................................................................................... 4-69
a FUNCTION .............................................................................................. 4-69
b EXAMPLE................................................................................................ 4-69