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CHAPTER 5: SETTINGS
5.3.5
Reduced Voltage
REDUCED
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
PATH: SETTINGS
S2 SYSTEM SETUP
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The 469 can control the transition of a reduced voltage starter from reduced to full voltage.
That transition may be based on "Current Only", "Current and Timer", or "Current or Timer"
(whichever comes first). When the 469 measures the transition of no motor current to
some value of motor current, a 'Start' is assumed to be occurring (typically current will rise
quickly to a value in excess of FLA, e.g. 3 × FLA). At this point, the
is initialized with the programmed value in seconds.
TIMER
•
If "Current Only" is selected, when the motor current falls below the user's
programmed Transition Level, transition will be initiated by activating the assigned
output relay for 1 second. If the timer expires before that transition is initiated, an
Incomplete Sequence Trip will occur activating the assigned trip relay(s).
•
If "Current or Timer" is selected, when the motor current falls below the user's
programmed Transition Level, transition will be initiated by activating the assigned
output relay for 1 second. If the timer expires before that transition is initiated, the
transition will be initiated regardless.
•
If "Current and Timer" is selected, when the motor current falls below the user's
programmed Transition Level and the timer expires, transition will be initiated by
activating the assigned output relay for 1 second. If the timer expires before current
falls below the Transition Level, an Incomplete Sequence Trip will occur activating the
assigned trip relay(s).
REDUCED VOLTAGE STARTING
REDUCED VOLTAGE
STARTING: Off
ASSIGN CONTROL
RELAYS:
TRANSITION ON:
Current Only
ASSIGN TRIP
RELAYS:
REDUCED VOLTAGE
START LEVEL: 100%
REDUCED VOLTAGE
START TIMER: 200
Range: On, Off
Range: Auxilary2, Aux2 & Aux3,
Auxiliary3
Range: Current Only, Current or Timer,
Current and Timer
Range: Trip, Trip & Aux2, Trip & Aux2 &
Aux3, Trip & Aux3
Range: 25 to 300% in steps of 1
Range: 1 to 600 s in steps of 1
REDUCED VOLTAGE START
5–21
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