More than just a soft startStarting an electrical motor involves a number of challenges, such as high startcurrents and mechanical stress on equipment. This results in high energy, installationand maintenance costs. <strong>Emotron</strong> MSF handles this and a lot more. Start and <strong>stops</strong>equences are optimized. Advanced braking techniques increase productivity.Built-in monitor functionality protects your process. Easy installation and set-upsave time and money. A soft-starter beyond the ordinary!Current<strong>Emotron</strong> MSF with torque control<strong>Soft</strong>starter with voltage controlY/D startDirect on line (DOL) start8765I/I N432DOL startY/D startVoltage/currentcontrol softstarter<strong>Emotron</strong> MSF torquecontrol softstarter2,0001,000Speed1,480 rpm102 4 6 8 10Time5 s 10 sTimeWith an <strong>Emotron</strong> MSF the start current is up to 30% lower thanwith a conventional softstarter.<strong>Emotron</strong> MSF offers efficient torque control that enables you tostart more smoothly with constant acceleration.
Ultra-smooth <strong>starts</strong> reduce your costsConventional softstarters use a pre-defined voltage rampto control the start. With <strong>Emotron</strong> MSF, the actual motortorque is continuously calculated and controlled accordingto the application requirements. This so called torque controlensures an ultra-smooth start with constant acceleration.The torque control means the start current is reduced evenfurther by up to 30%. You can use smaller fuses and lessexpensive cables, and will thus benefit from lower installationand energy costs. The smooth <strong>starts</strong> also lead to lessmechanical stress, improved process control and reducedmaintenance costs.Controlled <strong>starts</strong> for efficiency and safetyTorque boost can be used to overcome initial torque peakswhen starting, for example, a loaded crusher or mill. This willreduce mechanical stress as well as enhance efficiency inyour process. Starting a fan which is rotating in the wrongdirection due to a draught, will lead to high current peaksand mechanical stress and can result in blown fuses andbreakdown. <strong>Emotron</strong> MSF gradually slows the motor to acomplete stop before starting it in the right direction. Damageis prevented and mechanical vibrations are eliminated. Thestarting direction can be fully controlled, for example of atunnel fan if there is a fire when controlling the direction ofthe air flow is critical for safety reasons. <strong>Emotron</strong> MSF offersfull control without the need for an external PLC, thanks totwo inputs for start left/right and built-in control of forward/reverse contactors. You will benefit from simplified installationand reduced investment costs.Protect your process and maximize efficiencyThe <strong>Emotron</strong> MSF softstarter has a built-in load monitor thatprotects your machine and process against costly downtime,equipment damage and break-down. It reacts immediately ifa crusher is jammed, a pump is running dry, a compressor isidling, or a fan is operating inefficiently due to a blocked filter.This is achieved by constant viewing of the motor shaftpower. Any deviation from your selected load levels will resultin a warning or a quick but smooth stop. The actual load canbe displayed via, for example, Profibus. The monitor can alsobe used to determine when a process is ready, for example,when the viscosity is right in a mixing process. You can relyon an efficient and reliable operation protected from damageand interruptions.Smart <strong>stops</strong> with built-in braking functionalityThe definition of a <strong>smart</strong> stop depends on your application.For a pump, the aim is to slowly decrease the flow to preventmechanical stress on pipes and valves, while a saw oftenrequires a quick stop for security or productivity reasons. Theadvanced braking techniques of <strong>Emotron</strong> MSF softstartersmeets both challenges just as efficiently. When stoppinga pump you can benefit from the same <strong>smart</strong> principle aswhen starting it – a linear stop using the torque control. Youno longer risk water hammer and there is no need for costlyequipment such as motor-controlled valves. When a quickstop is needed, the brake functionality of <strong>Emotron</strong> MSFeliminates the need for expensive and space-consumingexternal brakes and saves you both investment and maintenancecosts. The built-in vector brake is used for handlinglow braking torque loads. The built-in reverse current brakeefficienctly handles high inertia loads in, for example, crusheror mill operation. It’s also the solution for band saws andsaw applications where extremely short braking times arerequired.LoadSpeedOverload stopOverload warningVoltage/current controlsoftstarterNormal load curveUnderload warningUnderload stopDOLstartY/D start<strong>Emotron</strong> MSFtorquecontrolTimeA built-in load monitor protects your process against damage and inefficiencyby sending a warning or stopping the process at your chosen load levels.2 4 6 8 10 12 14The torque control ensures a linear stop that protects your pump fromwater hammer. No motor-controlled valves are required.Time
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