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Schneider Inverter : Altivar 71 article

 

Schneider Inverter

         

     

     With its different types of motor control and numerous integrated functions, the Altivar 71 range of variable speed drives meets the most stringent requirements. It is suitable for the most demanding drive systems:

·           Torque and speed accuracy at very low speed, high dynamic performance with sensor/sensor less flux vector control

·         Extended frequency range for high-speed motors

·           Parallel connection of motors and special drives using the voltage/frequency ratio

·           Static speed accuracy and energy saving for open-loop synchronous motors

·           Smooth fledibility for unbalanced machines with the ENA (Energy Adaptation)

System In conjunction with the wide voltage range for a 690 V a line supply, the functions provided by the Altivar 71 drive boost performance levels and make machines more flexible to use for a large number of applications.

Hoisting

·         Brake control tailored for translational, hoisting and slewing movements

·         Load measurement using weight sensor

·         High-speed hoisting

·         Brake feedback management

·         Limit switch management

·         Slack sling

Handling

·         Very quick response times on transmission of a command: 2 ms (± 0.5 ms)

·         Reference via pulse train or differential analog input

·         Control via the principal communication networks

·         Position control via limit switches with time optimization at low speed

·         Multiple parameter settings via parameter set switching

Packing

·         Up to 50 Hz of the bandwidth

·         Very quick response times on change of reference: 2 ms (± 0.5 ms)

·         Control via integrated CANopen machine bus

·         Position control via limit switches

Textile machines

·         High-resolution digital speed reference (1/32000)

·         Speed accuracy ensured on the basis of a synchronous motor, irrespective of load

·         High bandwidth

·         Spooling function

·         Connection to common DC bus

·         Control of both asynchronous and synchronous motors supported

·         High-performance speed loop

Wood-working machines

·         Operation up to 1600 Hz

·         Fastest possible controlled stop on loss of line supply

·         Control via integrated CANopen machine bus

·         Protection of motor against over voltages

Process machines

·         PID regulator

·         High-resolution references

·         Speed or torque control

·         Connection to the principal communication networks

·         Separate control section power supply

·         Braking unit via re-injection to the line supply

·         Connection to common DC bus

Lifts

·         Brake control tailored for passenger comfort

·         Processing of load measurement by weight sensor

·         Conformity of relays to lift safety standard EN 81-13-2-2-3

·         Connection to CANopen machine bus

·         Control and integrity check of output contactor

·         Lift car clearance function

·         Control of both asynchronous and synchronous motors supported

·         Lift macro-configuration




Schneider Inverter

Motor control components : Contactors,Magnetic, overload relays,circuit-breakers,Pushbuttons, switches and pilot lights article
Schneider Inverter : Altivar 61 article
Schneider Soft Start : Altistart 48 article



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