4-14
469 Motor Management Relay
GE Power Management
4.3 S2 SYSTEM SETUP
4 SETPOINT PROGRAMMING
4
4.3.5 REDUCED VOLTAGE
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 mea-
sures 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
REDUCED VOLTAGE
START TIMER
is initialized with the programmed value in seconds.
•
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 acti-
vating the assigned trip relay(s).
Figure 4–1: REDUCED VOLTAGE START CONTACTOR CONTROL CIRCUIT
y
REDUCED VOLTAGE
y
[ENTER] for more
REDUCED VOLTAGE
STARTING: Off
Range: On, Off
ASSIGN CONTROL
RELAYS: Auxiliary3
Range: Auxilary2, Aux2 & Aux3, Auxiliary3
TRANSITION ON:
Current Only
Range: Current Only, Current or Timer, Current and Timer
ASSIGN TRIP RELAYS:
Trip
Range: Trip, Trip & Aux2, Trip & Aux2 & Aux3, Trip & Aux3
REDUCED VOLTAGE
START LEVEL: 100% FLA
Range: 25 to 300%, step: 1
REDUCED VOLTAGE
START TIMER: 200 s
Range: 1 to 500 seconds, step: 1
ENTER
ESCAPE
ð
ð
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
CC1
CC2
Содержание MOTOR MANAGEMENT RELAY 469
Страница 2: ......
Страница 4: ......
Страница 12: ......
Страница 22: ......
Страница 50: ......
Страница 142: ......
Страница 240: ......
Страница 254: ......
Страница 272: ......
Страница 286: ......
Страница 290: ......
Страница 294: ......
Страница 298: ......
Страница 300: ......
Страница 302: ......