BENSHAW RediStart EXEXMVRMX3 Series, User Manual

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Initial Current 1 QST 06
LCD Display
Range 50 – 600 % of FLA (Default: 100%)
Description The Initial Current 1 parameter is set as a percentage of the Motor FLA (QST 01) parameter setting. This
parameter sets the current that is initially supplied to the motor when a start is commanded. The initial current
should be set to the level that allows the motor to begin rotating within a couple of seconds of receiving a start
command.
To adjust the initial current setting, give the starter a run command. Observe the motor to see how long it
takes before it begins rotating and then stop the unit. For every second that the motor doesn’t rotate, increase
the initial current by 20%. Typical loads require an initial current in the range of 50% to 175%.
If the motor does not rotate within a few seconds after a start command, the initial current should be increased.
If the motor accelerates too quickly after a start command, the initial current should be decreased.
The Initial Current 1 parameter must be set to a value that is lower than the Maximum Current 1 (QST 07)
parameter setting.
See Also
Start Mode (CFN 01) on page 63.
Ramp Time 1 (QST 08 / CFN 02) on page 64.
Maximum Current 1 (QST 07 / CFN 04) on page 65.
Kick Level 1 (CFN 11) on page 68.
Kick Time 1 (CFN 12) on page 69.
Theory of Operation section 7.3.1, Current Ramp Settings, Ramps and Times on page 123.
Maximum Current 1 QST 07
LCD Display
Range 100 – 800 % of FLA (Default: 600%)
Description
The Maximum Current 1 parameter is set as a percentage of the Motor FLA (QST 01) parameter setting. This
parameter performs two functions. It sets the current level for the end of the ramp profile, as well as the
maximum current that is allowed to reach the motor after the ramp is completed.
If the ramp time expires before the motor has reached full speed, the starter holds the current at the maximum
current level until either the UTS timer expires, the motor reaches full speed, or the overload trips.
Typically, the maximum current is set to 600% unless the power system or load dictates the setting of a lower
maximum current.
See Also
Up To Speed Time (QST 09) on page 62.
Start Mode (CFN 01) on page 63.
Ramp Time 1 (QST 08 / CFN 02) on page 64.
Initial Current 1 (QST 06 / CFN 03) on page 64.
Kick Level 1 (CFN 11) on page 68.
Kick Time 1 (CFN 12) on page 69.
Theory of Operation section 7.3.1, Current Ramp Settings, Ramps and Times on page 123.
61
6 - PARAMETER DESCRIPTION
QST: Init Cur 1
06
100 %
QST: Max Cur 1
07
600 %