Medium Voltage Application Guide

LOGIC CONTROL CONFIGURATION
3.2 Operating Configurations
The equipment shall permit the user to select between multiple profiles for starting
the motor.
The equipment shall provide a kickstart option for starting the motor.
The equipment shall permit the user to select between multiple profiles for stopping
the motor.
The equipment shall provide a feedback ramp option for stopping the motor.
The equipment shall provide a means of automatically stopping the motor at a
predetermined time or after a predetermined period of operation.
The equipment shall be suitable for use with dual-speed and slip-ring motors
Thermal modeling that allows the soft starter to dynamically calculate the motor
temperature, predict the motors available thermal capacity, to predict whether the
motor can successfully complete a start.
3.3 Motor and System Protection Features
The starter shall have the following adjustable protection functions included as
standard. (ANSI Codes):
The equipment's sensitivity and response for protection functions shall be
programmable.
‣ Overload (49/51)
‣ Undercurrent (37)
‣ Instantaneous Over-current (50)
‣ Current Imbalance (46)
‣ Frequency (81)
‣ Auxiliary Trip A (86/97)
‣ Auxiliary Trip B (86/97)
‣ Excess start time (66)
‣ Maximum start Time (48)
‣ Starter Communications Failure (3)
‣ Battery/Clock Failure (3)
‣ SCR Temperature
‣ Ground Fault (50G)
‣ Overvoltage (59)
‣ Under-voltage (27)
‣ Phase sequence (47)
‣ Phase Loss (47)
‣ Power Loss (32)
The following protection states are also provided:
• Motor not detected
• Auxiliary trip A
• Auxiliary trip B
• Network communications
• EEPROM failure
• Gate drive failure
• Conduction 1 invalid
• Conduction 2 invalid
• Conduction 3 invalid
• Assembly control voltage low
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