3.3 ADJUSTMENTS
3.3.1 POTENTIOMETERS
POT
NAME
RANGE
DEFAULT
SETTING
DESCRIPTION
RV1
BRAKING
TIME
1-60 sec
30%
Adjust the braking time
CW rotation increases the time
RV2
TORQUE
100-300%
50%
Adjust DC current
CW increases the braking torque
(current)
3.3.2 LINK SELECTION
LINK
NAME
POSITION DESCRIPTION
JP1
VOLTAGE
LEVEL
LO
(Normal)
Braking action starts when motor starter has opened
and the motor terminal voltage has decreased to 30%
of the line voltage.
HI
Braking action starts when motor starter has opened
and the motor terminal voltage has decreased to 80%
of the line voltage. See important notes below.
HI setting is only used when the stopping time is critical and must be around 1-2 seconds.
For this application 300% DC current is not adequate. Consult factory before using this
jumper position.
When the DC Injection unit is set on the HI level a current surge could occur due to the
motor CEMF and the free wheeling action of the power circuit.
3.3.3 PUSHBUTTON
PUSHBUTTON
NAME
DESCRIPTION
SW1
RESET
Reset IOC fault trip
PAGE 10
Содержание Cutler-Hammer TRU-START
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Страница 21: ...5 TYPICAL CONNECTIONS 5 1 STAND ALONE DC INJECTION UNIT WITH ZERO SPEED DISABLE PAGE 17 ...
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Страница 23: ...5 3 REVERSING TRU START STARTER WITH DC INJECTION 125 AMPS AND BELOW PAGE 19 ...
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