VW3G48101 - Terminal - SCHNEIDER ELECTRIC

The Altistart 48 soft starter is a 6-thyristor dimmer providing progressive torque starting and stopping of three-phase squirrel-cage asynchronous motors, for powers between 4 and 900 kW. It incorporates soft start and slowdown functions, machine and motor protection and communication functions with automation systems. These functions respond to the most common applications of centrifugal machines, pumps, fans, compressors and conveyors, which are mainly encountered in construction, food and chemical activities. The performance of the Altistart 48 algorithms has been put to the service of robustness, safety and ease of implementation.

The Altistart 48 starter-retarder is an economical solution, it allows you to:

• reduce machine operating costs by reducing mechanical constraints and improving their availability,

• reduce stress on electrical distribution, by reducing current peaks and line voltage drops associated with motor start-ups.

• The Altistart 48 starter-retarder offer consists of 2 ranges:

• three-phase voltages from 230 V to 415 V, 50/60 Hz,

• three-phase voltages from 208 V to 690 V, 50/60 Hz.

For each voltage range, Altistart 48 soft starters are sized according to standard and severe applications.

The Altistart 48 1 soft starter is delivered ready to use for a standard application with class 10 motor protection.

It has an integrated terminal 2, allowing modification of the programming, adjustment or monitoring functions to adapt and personalize the application to the needs of the customer.

• Workout performance features with:

- the exclusive Altistart torque control (Schneider Electric patent),

- control of the torque delivered to the motor throughout the acceleration and deceleration period (significant reduction in water hammer),

- easy adjustment of the ramp and the starting torque,

- the possibility of short-circuiting the starter with a contactor 3 at the end of starting with maintenance of the electronic protections (bypass function),

- the wide frequency tolerance for power supplies by generator,

- the possibility of connecting the starter in the delta coupling of the motor, in series with each winding.

• Motor and machine protection functions with:

- integration of motor thermal protection,

- the processing of information from CTP thermal probes,

- start-up time monitoring,

- the engine preheating function,

- protection against underloads and overcurrents in steady state.

• Functions for ease of integration into automations with:

- the 4 logic inputs, 2 logic outputs, 3 relay outputs and 1 analog output,

- the plug-in input/output connectors,

- the configuration function for a second motor and easy adaptation of the settings,

- display of electrical quantities, state of charge and operating time,

- the RS 485 serial link for connection to the Modbus serial link.

• Conventional electronic start

To solve the problems of:

- mechanical stresses at start-up,

- hydraulic transients on acceleration and deceleration in pumping application, conventional electronic starting uses several current limits, or switching of several voltage ramps. The adjustment then becomes complex and must be modified each time the load changes.

• Starting with the Altistart 48

The torque control of the Altistart 48 makes it possible, with a single acceleration ramp, to start without mechanical constraint and smooth transition management.