soft starters for asynchronous motors Applications
(continued) Application monitoring functions
The monitoring functions provide the following information: Power factor: displayed between 0.00 and 1.00 Motor thermal state: 100% corresponds to the thermal state of the motor consuming the set nominal current Motor current: displayed in amperes between 0 and 999 A and in kA between 1000 and 9999 A Operating time: corresponding to the total number of soft starter operating hours during heating, acceleration, steady state, deceleration, braking, and continuous bypass operation. It is displayed in hours between 0 and 999 hours and in kilo hours between 1000 and 65536 hours.The active power is displayed between 0 and 255%, where 100% corresponds to the power at the set nominal current and at full voltage. Motor torque: displayed between 0 and 255%, where 100% corresponds to the nominal torque. Active power consumed: displayed in HP. The line voltage value must be configured. The accuracy of this setting depends on the error between the voltage configured and the actual voltage. The following soft starter states are shown in the display of the current state: - Soft starter without a run command and with no power supplied - Soft starter without a run command and with power supplied - Acceleration/deceleration in progress - Steady state operation - Braking in progress - Soft starter in current limiting mode - Starting time delay not elapsed Last fault condition Phase rotation direction: Displays the direction of rotation (direct or indirect). Keypad display locking code - An access code can be used to protect access to the soft starter's adjustment and configuration parameters. Only the monitoring parameters are accessible when the adjustment and configuration parameters are locked out.
Logic input application functions
The Altistart 48 has 4 logic inputs: 2 logic inputs (RUN and STOP) are reserved for run/stop commands which can be sent in the form of maintained contacts or as pulsed contacts. - 2-wire control: Starting and stopping are controlled by a single logic input State 1 of the logic input controls starting and state 0 controls stopping. - 3-wire control: Starting and stopping are controlled by 2 separate logic inputs. A stop is obtained on opening (state 0) the STOP input. The pulse on the RUN input is stored until the stop input opens. 2 logic inputs (LI3 and LI4) can be configured with the following functions: - Freewheel stop: When combined with a braked stop or decelerated stop command, activating the logic input will stop the motor in freewheel mode. - External detected fault: Enables the soft starter to detect an external, customer defined fault event (such as level or pressure). When the contact is open, the soft starter enters detected fault mode. - Force to local control mode: When the soft starter is connected to a serial link, this function can be used to change from line mode (control via serial link) to local mode (control via the keypad display). - Reset motor thermal fault: Enables the motor thermal fault to be reset remotely. - Activation of the cascade function: With this function active, motor thermal protection is disabled and relay R1 is configured as the fault isolation relay. This function can be used to start and decelerate several motors one after the other with a single soft starter. - Reset all fault events: Enables all fault events to be reset remotely. - Second set of motor parameters: Enables a second set of parameters to be selected to start and decelerate two different motors with a single soft starter.Previous Page