Toshiba JKSSS Series Instruction Manual page 76

Basic Installation and Operation
Guide
SP8.2 Basic Start Overload Curve
• Start Curve Locked Rotor Time: The locked rotor time can be set to the OL Class default chosen in Setpoint
Page 1 or to a specific time. The overload condition must exist for the programmed amount of time before a trip
occurs.
• Start Locked Rotor Current: The current the motor draws with full voltage on the windings and no motor
movement (as a percent of motor FLA). Refer to the motor nameplate data or contact the motor manufacturer.
• Acceleration Time Limit: If the motor does not enter run mode (reach "At-Speed") within the pre-set time, the
unit trips on acceleration time limit.
• Number of Starts per hour: If enabled, this limits the maximum number of starts permitted per hour. This setpoint
allows a maximum of 6 starts per hour. Contact the motor manufacturer for further information regarding number
of starts per hour.
• Time Between Starts: If enabled, the soft starter prevents another start attempt until the programmed time has
expired.
SP8.3 Area Under Curve Protection: If enabled, this secondary start protection uses both the basic start protection
and the area under the curve protection.
• Max I*I*T Start: The maximum I²t allowed during start. If the I²t to start exceeds this number then the soft starter
will generate a trip.
SP8.4 Current Over Curve: Learns the motor's starting characteristics and protects the motor based upon the
learned curve. It is useful when commissioning a new motor.
• Learn: The unit reads the motor's starting characteristics. Start the motor and allow it to come to full speed. The
start feedback enables the motor protection based on the learned start curve.
• Learned Start Curve Bias: The maximum allowed deviation above or below the start curve before a trip is
generated.
• Time for sampling: The time the soft starter continues to sample the start curve characteristic during learn mode.
TOSHIBA
JKSSS Series Solid State Soft Starters
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