Altistart 48 Enclosed Altistart 48 Soft Starters Page 15 Functions

15 Altistart 48 soft starters for asynchronous motors Applications Functions Functions (continued) Logic output application functions The soft starter has 2 logic outputs (LO1 and LO2) which, depending on their configuration, can be used for remote indication of the following states or events: Motor thermal alarm: The motor thermal state has exceeded the alarm threshold. This alarm can be used, for example, to avoid starting a motor if the thermal reserve is insufficient. Motor powered: Indicates that there may be current in the motor. Motor overcurrent alarm: The motor current is higher than the set threshold. Motor underload alarm: The motor torque is lower than the set threshold. Motor PTC probe alarm: The thermal state monitored by the PTC motor probe has been exceeded. Second set of motor parameters activated Relay and analog output application functions The soft starter has 3 relays, 2 of which are configurable: Relay R1 application functions Relay R1 can be configured as follows: - Fault relay: Relay R1 is activated when the soft starter is powered and there are no fault conditions. It is deactivated when a fault condition occurs and the motor switches to freewheel mode. - Isolating relay: The contact of relay R1 closes when a run command is sent and re-opens when a stop command is sent, at the end of deceleration on a decelerated stop or in the event of a fault condition. The line contactor is deactivated and the motor is isolated from the line supply. End of starting relay R2: Cannot be configured. The end of starting relay controls the bypass contactor on the soft starter. It is activated when the motor completes the starting phase. It is deactivated when a stop command is sent and in the event of a fault condition. The soft starter regains control when a braking or deceleration command is sent. Relay R3 application functions Relay R3 is configured to indicate the same states or events as logic outputs LO1 or LO2. Analog current output AO application function: - Analog output AO provides an image of the following values: motor current, motor torque, motor thermal state, power factor, active power. The following settings are associated with the analog output: - The type of signal supplied: 0-20 mA or 4-20 mA - The scale setting of the signal. The function associates the maximum amplitude of the analog output (20 mA) with a percentage of the nominal value of the parameter, which can be set between 50% and 500%. Function compatibility table Functions Decelerating stop InTele braking stop Forced freewheel stop Thermal protection Motor phase loss detection Tests on low power motor Cascaded motors Decelerating stop N/A No Yes InTele braking stop No N/A Yes Forced freewheel stop Yes N/A Yes No Thermal protection Yes N/A Yes No Motor phase loss detection Yes N/A Yes N/A Tests on low power motor Yes N/A No Cascaded motors Yes No N/A No N/A

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