Linear Positioners Catalog_en-US_revA - Kollmorgen

L I N E A R P O S I T I O N E R SBrake OptionThe BS and motor brake options aretypically used with electric cylindersemploying ball screw drive assemblies.The electrically released, spring setbrake prevents backdriving when the unitis at rest, or in case of a power failure.When power is applied, the brakereleases and the cylinder is free to move.When power is off, springs engage thebrake to hold the load in position.The BS brake is mounted directly to theballscrew to provide holding torque,without relying on the rest of the drivetrain.When using a motor mounted brake thebrake torque is multiplied by the belt orgear reduction, and does not interferewith certain rear mounting options.But, if the belt fails, the brake will beinoperative.BS is not available with:• Inline motor orientation• Rear mounting options: -MP2,-MP3, -MS1, -MF2, -MF3• EC1BS115 Wiring ConnectionsBrakeCoilAC+RectifierAC115 VacSpecificationsBS Ballscrew Brake OptionMounting Location Ballscrew (see dimensions)Voltage Options115 Vac (-BS115), 24 Vdc (-BS24), 24 Vac (-BA24)Cable Type/Length EC2/3/4/5 – 3.7 m [12 ft] with quick disconnectN2 – 3.7 m [12 ft] flying leads (no quick disconnect)Holding TorqueEC2 – 3.9 N-m [35 lb-in], 12.5 W electrical powerEC3 – 6.7 N-m [60 lb-in], 17 W electrical powerEC4/5 – 39.2 N-m [350 lb-in], 15 W electrical powerN2 – 3.4 N-m [30 lb-in], 13 W electrical powerScrewWith BS OptionN [lb]Without BS Option N [lb]EC2 -16B Ball 1550 [350] —-05B Ball 3600 [810] —-04A Lead 3600 [810] 3600 [810]EC3 -16B Ball 2660 [600] —-10B Ball 4260 [960] —-05B Ball 7200 [1620] —-04A Lead 7200 [1620] 7200 [1620]EC4 -25B Ball 9940 [2230] —-10B Ball 12000 [2700] —EC5 -32B Ball 7770 [1750] —-10B Ball 24800 [5590] —N2 -2B Ball 1100 [240] —-5B Ball 2670 [600] —-5A Lead (N2-D/P) 2670 [600] 445 [100]-5A Lead(N2-other)2670 [600] 1780 [400]-8A Lead - 2670 [600]Notes:• High vibration in a machine may cause an lead screw to backdrive at lower values than indicated above. In suchapplications, a brake may be necessary.• The BS and motor brakes should only be used to hold static (already stopped) leads. They are not designed forrepeated use as dynamic brakes.• Quick-disconnect cable provided only on EC models. N2 includes flying leads cable from grommet on brake can.ñBS OptionMotor Brake and EC1 (BA24) OptionMounting Location Rear motor shaft, opposite motor (BA24)Voltage Options24 VdcCable Type/Length Part of motor cable set, flying leads (BA24)SeriesDim "A"in [mm]Dim "B"in [mm]EC2 2.73 (69.3) 3.09 (78.5)EC3 3.32 (84.3) 3.83 (97.3)EC4 3.94 (100.0) 5.58 (141.7)EC5 3.94 (100.0) 5.58 (141.7)Holding Torque N-m (lb-in)EC1 w/BA24 0.56 (5.0)AKM23 1.42 (12.6)AKM42 5.30 (46.9)AKM52 14.50 (128)Holding Force (N) = Brake (N-m) × 2π × 1000 × gear ratioLead (mm/rev)Example: EC3-AKM42G- nnn-15-16BHolding Force = 5.3 × 2π × 1000 × 1.5 = 3120 N1656K O L L M O R G E N