26M048B2U

Permanent magnet stepper motors Commercial series The M series instrument stepper motors are high quality permanent magnet types providing a choice of 18,15, 7.5 or 3.6 degree step angle. The motors may be specified fitted with gearheads where increased torque and resolution are required at reduced operating speed. The M series motors offer excellent performance combined with low pricing. They are ideally suited to instrumentation applications where large production volumes are likely. A comprehensive programme of drives, power supplies and controllers are available for the small volume user to construct advanced single and multi-axis positioning systems. Dimensions: L7 L1 L2 L3 L5 L4 L3 ∅ D2 ∅ D1 ∅D4 ∅ D3 L4 L8 D4 L6 L8 Form 1A motor type form 15M020D 26S024B 26M048B 35L048B 42M048C 60L 048B 42M100B-2U 42M100B-1U MV82801 1A 1A 1A 1A 1A 2 1A 2 dimensions mm D1 D2 D3 15.01 1.5 5.97 26.2 2.0 7.92 10 36 2.0 10 42 3.0 10 59.2 6.35 12 42 3.0 10 42 3.0 10 59.2 6.0 12 Form 2 D4 2.2 3.3 3.2 3.5 4.3 3.5 3.5 4.3 L1 15.11 13.3 13.72 21.1 22.0 37.9 15.5 15.5 37.9 L2 10 12.7 11.3 11.3 11.4 19.1 11.4 11.4 18 L3 24 42.8 L4 20 35 50 56.5 79.4 42 56.5 65 42 49.5 66.68 35 49.48 56 L5 1.5 3.8 1.52 1.8 1.52 2.0 1.52 1.52 2.03 L6 0.8 0.8 0.8 0.8 1.6 0.8 0.8 1.6 L7 2.1 Nil 3.4 2 3.5 Nil 3.4 3.4 2.23 L8 90 191 191 305 305 305 305 305 Specification motor type 15M020D-1B 26S024B-2U 26M048B-2U 26M048B-1U 35L048B-2U 35L048B-1U 42M048C-2U 42M048C-1U 60L048B-2U 60L048B-1U MV82801-P2 MV82801-P1 42M100B-2U 42M100B-1U step angle degrees 18 15 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 3.6 3.6 holding torque Ncm 0.388 0.5 0.9 rotor inertia 2 Kgcm 0.00011 0.00045 0.0011 2.5 2.5 6.6 6.6 16.9 16.9 19.8 19.8 4.5 4.5 0.004 0.004 0.0134 0.0134 0.095 0.095 0.095 0.095 0.0118 0.0118 resistance per phase ohms 40 118 110 19.6 64 11 52.4 9.1 26.2 4.55 26 4.6 75 12.5 current per phase amps 0.125 0.1 0.1 0.25 0.18 0.45 0.23 0.55 0.46 1.0 0.46 1.0 0.16 0.40 inductance per phase mH 14 33.8 36.5 5.3 40 7.8 51.7 8.1 26.2 6.4 33 6 37.7 6.6 number of leads or terminals 4 6 6 6 6 6 6 6 6 6 6 6 6 mass gms 14 28 28 88 88 144 144 478 478 440 440 87 87 note The above motors are 4 phase units suitable for use with uni-polar or bi-polar drive circuits with the exception of the 15M029D-1B motor which is designed specifically for Bi-polar operation . Bi-polar versions of the other motors in the range are available to special order. Mclennan Servo Supplies Ltd. Tel: +44 (0)8707 700 700 www.mclennan.co.uk Typical permanent magnet stepper motor performance 26 series Torque ( Ncm ) 0.4 0.3 0.2 26S024B 26M048B 0.1 Torque ( Ncm ) 35L048B series 0.5 2 1.5 1 250 500 750 L/R Drive 0 0 0 L/4R drive 0.5 0 1000 steps per second Uni-polar drive 60L048 & MV82 series 10 L/5R Drive L/R Drive Torque ( Ncm ) Torque ( Ncm ) 1500 Uni-polar drive 42M048C series 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 500 1000 steps per sec. ( 7.5 degrees ) 8 6 4 L/R Drive 2 L / 5R Drive 0 0 250 500 750 1000 steps per sec. ( 7.5 degrees ) 0 Uni-polar drive 250 500 750 steps per sec. ( 7.5 degrees ) 1000 Uni-polar drive Suitable modular drives for above motors: MSE422, PVP134, PM542 12Vdc Explanation of terminology The motors may be connected directly to a dc supply of the same value as the motor rating. For example, the 35L048B-2U motor is a 12 Volt rated unit and therefore may be connected directly to a 12 Vdc supply as shown in Fig 1. This is often referred to as L/R Drive 35L048B-2U motor FIG. 1 For increased high speed performance however it is quite usual to connect the motor to a higher supply voltage via series resistors since the current rise time in the motor’s coils is proportional to the inductance ( L ) divided by the resistance ( R ) in the drive circuit. 24 Vdc Series Resistors For example, the 42M048C-1U motor is a 5 Volt rated unit. When connected to a 24 Vdc supply via series resistors the ratio of inductance/ resistance will be greatly improved. In this case the system, as shown in Fig 2 would approximate an L/5R drive. 42M048C-1U motor Alternatively a more sophisticated drive system can be employed using chopped constant current techniques when the series resistors are not required. A suitable drive of this type is PM542 FIG. 2 Mclennan Servo Supplies Ltd. DRIVE CIRCUIT DRIVE CIRCUIT Tel: +44 (0)8707 700 700 www.mclennan.co.uk