Emotron MSF 2.0 Softstarter
Emotron MSF 2.0 Softstarter Emotron MSF 2.0 Softstarter
End torque at stop [321]This menu will be available if torque control is chosen asstop method in menu [320] (alternative 1 or 2). In thismenu the end torque at stop is configured.3 2 1End torque at stopDefault: 0%Range: 0-100% of T n0-100 End torque at stop.Voltage controlWith voltage control at stop, the voltage to the motor will bedecreased to the chosen step down voltage at stop immediatelyafter a stop signal. Then the voltage to the motor willfollow a linear ramp down to the minimum voltage of 25%of the nominal voltage. An example of this voltage ramp isshown in Fig. 44.VoltageU n3 2 2Fig. 44 Menu numbers for step down voltage at stop and stoptime.Step down voltage at stop [322]This menu is available if voltage control is chosen as stopmethod in menu [320] (alternative 3). In this menu the stepdown voltage at stop is chosen in percentage of the nominalmotor voltage.1000Step down voltage at stopDefault: 100%Range: 100-40% of U100-40 Step down voltage at stop.StopSettingTimeSettingBrakingBraking can be used in applications where there is a need fora quick stop.There are two built-in braking methods: dynamic vectorbrake for normal loads and reverse current brake for heavyloads with high inertia. In both braking methods the MSF2.0 continuously detects the motor speed. At low speed theDC brake mode is activated until the motor is standing still.In DC-brake mode only two phases (L2 and L3) are active.NOTE: If several softstarters are supplied from the samepower line and the braking functionality is used, thesoftstarters should be connected with different phasesequences, i.e. L1-L2-L3 on the first unit, L2-L3-L1 on thenext and so on.The MSF 2.0 will automatically turn off the output voltagewhen the motor has stopped or when the stop time hasexpired. Optionally an external rotation sensor can be connectedvia digital input, see description for menu [500] onpage 77 for more information.Dynamic vector brakeWith dynamic vector brake, the braking torque applied tothe motor will increase with decreasing speed. Dynamic vectorbrake can be used for all loads which are not rotating tooclose to synchronous speed when the motor voltage isswitched off. This is valid for most applications as the loadspeed usually decreases because of frictional losses in gears orbelt drives as soon as the motor voltage is switched off.However, loads with very high inertia may remain at highspeed even though the motor is not supplying any torque.For these applications the reverse current brake can be usedinstead.When the dynamic vector brake is used, no additional connectionsor contactors are needed.Reverse current brakeWith reverse current brake, a very high braking torque canbe applied to the motor even close to synchronous speed. Allkind of loads can be stopped quickly using reverse currentbrake, including loads with very high inertia. If high brakingtorques are needed, it should be checked carefully whetherthe motor, the gear or belt drive and the load can withstandthe high mechanical forces. To avoid harmful vibrations, it isgenerally recommended to select as low a braking torque aspossible which also fulfils the demands for a short brakingtime.For reverse current brake, two mains contactors are needed.The connection is shown in Fig. 45. The contactors have tobe controlled by the MSF’s relay outputs. During start andfull voltage operation contactor K1 will be activated, forbraking K1 will be opened and after a time delay K2 will beactivated to change the phase sequence.Emotron AB 01-4135-01r2 Functional description 61
NOTE: For several start/stops it is recommend that themotor temperature be monitored using the PTC input.WARNING: When reverse current brake isselected, the relays K1 and K2 areautomatically configured for reverse currentbrake functionality. The relay setting remainseven if reverse current brake is deactivated. Therefore itmay be necessary to adapt the relay functions manually.PTCCurrent transformerDigIn 1 DigIn 2 +12 V AnIn GND DigIn 3 DigIn 4 +12 V AnOut CT1 CT2 CTc11 12 13 14 15 16 17 18 19 75 76 77Start/StopFig. 45 Reverse current brake wiring example.62 Functional description Emotron AB 01-4135-01r2
- Page 14 and 15: The disadvantage of the star-delta
- Page 16 and 17: T/T n2,521,510,5Torquef 3
- Page 18 and 19: 3. MountingThis chapter describes h
- Page 20 and 21: Mounting schemesMSF-017 to MSF-250T
- Page 22 and 23: 4. ConnectionsThe description of in
- Page 24 and 25: Fig. 20 Connection of MSF-110 to MS
- Page 26 and 27: Fig. 22 Connection of MSF-310 to MS
- Page 28 and 29: 4.3 Minimum wiringThe figure below
- Page 30 and 31: 5. How to get startedThis chapter b
- Page 32 and 33: 5.5 Setting the start commandAs def
- Page 34 and 35: 6. Applications and functions selec
- Page 37 and 38: Table 10Applications Rating ListApp
- Page 39 and 40: Table 11Application Functions ListA
- Page 41 and 42: 38 Applications and functions selec
- Page 43 and 44: The control panel is used for selec
- Page 45 and 46: 7.7 Overview of softstarteroperatio
- Page 47 and 48: 8.1 General settingsGeneral setting
- Page 49 and 50: Nominal motor speed.2 1 314Nominal
- Page 51 and 52: Overload time (s)Normal loadInterna
- Page 53 and 54: NOTE: Check that the motor current
- Page 55 and 56: 8.4.3 Reset to factory setting [243
- Page 57 and 58: External alarm auto reset [257]This
- Page 59 and 60: With voltage control the output vol
- Page 61 and 62: To optimize the start, use the sett
- Page 63: Torque boost current limit [316]In
- Page 68 and 69: Slow speed controlled by an externa
- Page 70 and 71: JOG commands can be given via analo
- Page 72 and 73: Power Factor Control PFC [341]Durin
- Page 74 and 75: Max power alarm [400]In this menu m
- Page 76: Min power alarm response delay [410
- Page 79 and 80: Undervoltage level [437]This menu i
- Page 81 and 82: Relay outputsPTC inputPTCCurrent tr
- Page 83 and 84: Analogue start/stop off-value [503]
- Page 85 and 86: Digital input 3 function [512]In th
- Page 87 and 88: Scaling analogue output, max [523]T
- Page 89 and 90: K1 contact function [533]In this me
- Page 91 and 92: !CAUTION: Very high currents can ar
- Page 93 and 94: For applications which use the reve
- Page 95 and 96: It is possible to use just one digi
- Page 97 and 98: Line main voltage L1-L38.10.2 Statu
- Page 99 and 100: 8.11 Alarm listThe alarm list is ge
- Page 101 and 102: whether they need a Reset signal (m
- Page 103 and 104: 100 Protection and alarm Emotron AB
- Page 105 and 106: Observation Fault indication Cause
- Page 107 and 108: Observation Fault indication Cause
- Page 109 and 110: 106 Maintenance Emotron AB 014135-0
- Page 111 and 112: 12.3.1 Cable kit for external curre
- Page 113 and 114: 110 Options Emotron AB 01-4135-01r2
NOTE: For several start/stops it is recommend that themotor temperature be monitored using the PTC input.WARNING: When reverse current brake isselected, the relays K1 and K2 areautomatically configured for reverse currentbrake functionality. The relay setting remainseven if reverse current brake is deactivated. Therefore itmay be necessary to adapt the relay functions manually.PTCCurrent transformerDigIn 1 DigIn 2 +12 V AnIn GND DigIn 3 DigIn 4 +12 V AnOut CT1 CT2 CTc11 12 13 14 15 16 17 18 19 75 76 77Start/StopFig. 45 Reverse current brake wiring example.62 Functional description <strong>Emotron</strong> AB 01-4135-01r2
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