GE Industrial Solutions ASTAT BP - Manual (Page 30)

ASTAT BP User Manual
30 GE Industrial Solutions ©2013 GE Company All Rights Reserved
Function &
Default
Range Unit Description
Current Limit
350% of Im
100-700% % of
Motor
Current
Sets the motor’s highest current during starting.
A setting that is too high will increase the current drawn from
mains and speed up acceleration.
A setting that is too low may prevent the motor from completing
the acceleration process and reaching full speed. In general, this
setting should be set to a value that is high enough to prevent
stalling.
Current Limit is limited to the value of:
<350x( Starter Current/Motor Current)>
with a minimum setting of 300% and a maximum
setting of 700%.
Note:
Current Limit does not operate during RUN and SOFT
STOP.
Ramp UP Time
10 SEC.
1-30
23
sec. Sets Ramp UP Time of the motor.
Determines the motor’s voltage Ramp UP Time, from initial to
full voltage.
It is recommended to set the Ramp UP Time to the minimum
acceptable value (approx. 5 sec).
Notes:
Since Current Limit overrides Ramp UP Time, when
Current Limit is set low, the starting time will be longer
than the Ramp UP Time setting.
When the motor reaches full speed before voltage reaches
nominal, Ramp UP Time setting is overridden, causing voltage
to quickly ramp-up to nominal.
Using Soft Start Curve 1, 2, 3 prevents quick
ramp up.
23
The range of the Ramp UP Time can be extended to 1-90 sec. by using the EXPANDED SETTING as described in section 4.7.6 page 36.