GE 469 Instruction Manual page 164

Note
5–22
469
TRIP
BLOCK
FIGURE 5–1: Reduced Voltage Start Contactor Control Circuit
MOTOR
AMPS
(% FLA)
3 x FLA
Transition
Level
FLA
808725A1.CDR
FIGURE 5–2: Reduced Voltage Starting Current Characteristic
If this feature is used, the Starter Status Switch input must be either from a common
control contact or a parallel combination of Auxiliary 'a' contacts or a series combination
of Auxiliary 'b' contacts from the reduced voltage contactor and the full voltage contactor.
Once transition is initiated, the 469 assumes the motor is still running for at least 2
seconds. This prevents the 469 from recognizing an additional start if motor current goes
to zero during an open transition.
STOP START
CC1
CC1
SEAL IN
469
3 AUX
CC2
CC2 SEAL IN
When the currrent falls below
the Transition Level and/or the
Timer expires, the Auxiliary
Relay activates for 1 second
Transition Time
signifies
Open Transition
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
REDUCED VOLTAGE
CONTACTOR
FULL VOLTAGE
CONTACTOR
808724A2.CDR
TIME