Emotron MSF 2.0 Softstarter

Emotron MSF 2.0 Softstarter Emotron MSF 2.0 Softstarter

11.07.2015 Views

Table 11Application Functions ListApplication Challenge MSF Solution MenusMechanical shocks for transmissions andtransported goods.Loading or unloading conveyorsLinear torque control 310;=1Slow speed and accurate position control.330-333,500,501Conveyor jammed Shaft power overload 400CONVEYORConveyor belt or chain is off but the motor isShaft power underload 401still runningStarting after screw conveyor has stoppeddue to overload.JOG in reverse direction and then starting in forward. 335, 500Conveyor blocked when starting Locked rotor function 228, 229High starting current in end of rampsSlivering belts.Square torque control for square load characteristics 310;=2FANFan is going in wrong direction when starting.Catching the motor and going easy to zero speed andthen starting in right direction.310;=2Belt or coupling brokenBlocked filter or closed damper.Shaft power underload 401High inertia load with high demands on Linear torque control gives linear acceleration and low310;=1torque and current control.starting current.Dynamic vector brake without contactor for medium 320;=5Need to stop quickly both for emergency and loads.323;=1,324PLANER production efficiency reasons.Reverse current brake with external contactor for heavy 320;=5loads.323;=2,324High speed linesConveyor speed set from planer shaft power analogue520-523output.Worn out tool Shaft power overload 400Broken coupling Shaft power underload 401High inertiaLinear torque control gives linear acceleration and low310;=1starting current.Heavy load when starting with material Torque boost 316,317ROCK CRUSHERLow power if a diesel powered generator isused.Current limit at start 314Wrong material in crusher Shaft power overload 400Vibrations during stopDynamic vector brake without contactor320;=5323;=1,324High inertia load with high demands on Linear torque ramp gives linear acceleration and lowtorque and current control.starting current.310;=1Dynamic vector brake without contactor for medium 320;=5loads.323;=1,324Need to stop quickly.BANDSAWReverse current brake with external contactor for heavy 320;=5loads.323;=2,324High speed linesConveyor speed set from bandsaw shaft power analogueoutput.520-523Worn out saw blade Shaft power overload 400Broken coupling, saw blade or belt Shaft power underload 401High inertia loadLinear torque control gives linear acceleration and low310;=1starting current.Too high load or unbalanced centrifuge Shaft power overload 400Dynamic vector brake without contactor for medium 320;=5CENTRIFUGEloads.323;=1,324Controlled stopReverse current brake with external contactor for heavy 320;=5loads.323;=2,324Braking down to slow speed and then positioning control.330-333,Need to open centrifuge in a certain position.500,501Emotron AB 01-4135-01r2 Applications and functions selection 35

Table 11Application Functions ListApplication Challenge MSF Solution MenusMIXERHAMMER MILLDifferent materialsLinear torque control gives linear acceleration and low310;=1starting current.Need to control material viscosity Shaft power analogue output 520-523Broken or damaged blades Shaft power overload 400Shaft power underload 401Linear torque control gives linear acceleration and low310;=1Heavy load with high breakaway torque starting current.Torque boost in beginning of ramp. 316,317Jamming Shaft power overload 400Fast stopReverse current brake with reversing contactor for 320;=5heavy loads.323;=2,324Motor blocked Locked rotor function 228ExampleHammer Mill:• Linear Torque control (parameter [310]=1) will give thebest results.• Torque boost to overcome high breakaway torque(menus [316] and [317])• Overload alarm function for jamming protection (menu[400])• Stop function reverse current brake (menu [323], selection2) can be used. Menus 324 and [325] to set thebrake time and strength.6.5 Special conditions6.5.1 Small motor or low loadThe minimum load current for the MSF 2.0 softstarter is10% of the rated current of the softstarter, except for theMSF-017 where the min. current is 2 A. Example: MSF-210, rated current = 210 A. Min. Current 21 A. Please notethat this is “minimum load current” and not minimum ratedmotor current.6.5.2 Ambient temperature below0°CFor ambient temperatures below 0°C an electric heater orsimilar must be installed in the cabinet. The softstarter canalso be mounted somewhere else since the distance betweenthe motor and the softstarter is not critical.6.5.3 Phase compensation capacitorIf a phase compensation capacitor is to be used, it must beconnected at the inlet of the softstarter, not between themotor and the softstarter.6.5.4 Shielded motor cableIt is not necessary to use shielded wires together with softstarters.This is due to the very low radiated emissions.NOTE! The softstarter should be wired with a shieldedcontrol cable to fulfil the EMC regulations outlinedsection 1.6, page 6.6.5.5 Pump control with softstarterand frequency invertertogetherIt is possible, e.g. in a pump station with two or morepumps, to use one frequency inverter on one pump and softstarterson each of the other pumps. The flow of the pumpscan then be controlled by one common control unit.6.5.6 Starting with counterclockwiserotating loadsIt is possible to start a motor clockwise, even if the load andmotor are rotating counterclockwise e.g. fans. Depending onthe speed and the load “in the wrong direction” the currentcan be very high.6.5.7 Running motors connected inparallelWhen starting and running motors connected in parallel,the total amount of the motor current must be equal orlower than the rating of the connected softstarter. Pleasenote that it is not possible to have individual settings foreach motor or to use the internal thermal motor protection.The start ramp can only be set for an average starting rampfor all the connected motors. This means that the start timemay differ from motor to motor.For motors connected in parallel, torque control is not recommendedbecause of the risk of oscillation between themotors. Voltage control with or without current limit is preferredinstead. The use of the braking functionality is notrecommended for motors connected in parallel.36 Applications and functions selection Emotron AB 01-4135-01r2

Table 11Application Functions ListApplication Challenge <strong>MSF</strong> Solution MenusMechanical shocks for transmissions andtransported goods.Loading or unloading conveyorsLinear torque control 310;=1Slow speed and accurate position control.330-333,500,501Conveyor jammed Shaft power overload 400CONVEYORConveyor belt or chain is off but the motor isShaft power underload 401still runningStarting after screw conveyor has stoppeddue to overload.JOG in reverse direction and then starting in forward. 335, 500Conveyor blocked when starting Locked rotor function 228, 229High starting current in end of rampsSlivering belts.Square torque control for square load characteristics 310;=2FANFan is going in wrong direction when starting.Catching the motor and going easy to zero speed andthen starting in right direction.310;=2Belt or coupling brokenBlocked filter or closed damper.Shaft power underload 401High inertia load with high demands on Linear torque control gives linear acceleration and low310;=1torque and current control.starting current.Dynamic vector brake without contactor for medium 320;=5Need to stop quickly both for emergency and loads.323;=1,324PLANER production efficiency reasons.Reverse current brake with external contactor for heavy 320;=5loads.323;=2,324High speed linesConveyor speed set from planer shaft power analogue520-523output.Worn out tool Shaft power overload 400Broken coupling Shaft power underload 401High inertiaLinear torque control gives linear acceleration and low310;=1starting current.Heavy load when starting with material Torque boost 316,317ROCK CRUSHERLow power if a diesel powered generator isused.Current limit at start 314Wrong material in crusher Shaft power overload 400Vibrations during stopDynamic vector brake without contactor320;=5323;=1,324High inertia load with high demands on Linear torque ramp gives linear acceleration and lowtorque and current control.starting current.310;=1Dynamic vector brake without contactor for medium 320;=5loads.323;=1,324Need to stop quickly.BANDSAWReverse current brake with external contactor for heavy 320;=5loads.323;=2,324High speed linesConveyor speed set from bandsaw shaft power analogueoutput.520-523Worn out saw blade Shaft power overload 400Broken coupling, saw blade or belt Shaft power underload 401High inertia loadLinear torque control gives linear acceleration and low310;=1starting current.Too high load or unbalanced centrifuge Shaft power overload 400Dynamic vector brake without contactor for medium 320;=5CENTRIFUGEloads.323;=1,324Controlled stopReverse current brake with external contactor for heavy 320;=5loads.323;=2,324Braking down to slow speed and then positioning control.330-333,Need to open centrifuge in a certain position.500,501<strong>Emotron</strong> AB 01-4135-01r2 Applications and functions selection 35

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