2-Phase Stepping Motors

1 Technical Reference F-1 General Information G-1 Additional Information 2-Phase Stepping MotorsC-183 Stepping MotorsMotor & Driver PackagesClosed Loop AAC InputDC Input5-Phase MicrostepAC InputDC Input5-Phase Full/HalfDC InputAC InputDC Input2-Phase Full/Halfwith IndexerDriverControllersASAS PLUSASCRKCFK2 CSKUMK CSKPK/PVUI2120 GEMP401 EMP402SG8030 JSMKA ccessoriesPMCLow-SpeedSynchronousMotorsI ntroductionPKwithEncoder2-Phase Stepping MotorsBefore Usinga SteppingMotorwithoutEncoder in.

2 ( 28 mm) in. ( 35 mm) Stepping Motors in. ( 42 mm) in. ( mm) in. ( 60 mm) in. ( 85 mm) in. ( 90 mm) 2-Phase Stepping MotorsC-184 Six frame sizes are available in a range from in. (28mm) to in. (85 mm). In addition to the standard type, weoffer high torque type, PVSeries (high inertia capability),high-resolution type and SHgeared type. The motorwindings also come in various specifications. Wide VarietySizeSeries/TypeMotor frame Size: in. (mm) in.( 28 mm)PKSeriesStandardType/High TorqueTypeHigh ResolutionType/SHGearedTypePV Series(High Inertia Capability)/ in.

3 ( 35 mm)//// in.( 42 mm)/ in.( mm) 1// in.( 60 mm)//// in.( 85 mm) 2///Page C-202 Page C-204 Page C-208 Page C-218 Page C-212 Page C-198 Page C-222 Page C-224 Page C-231 Page C-200 Page C-196 Page C-214 Page C-227 1 Gearhead frame size is in. sq. (60 mm sq.) 2 Gearhead frame size is in. sq. (90 mm sq.) 1 2with Encoder page C-233with Encoder page C-239 Accessories (Sold Separately) motor Mounting BracketsPage C-291 Flexible CouplingsPage C-284MC motor CouplingsFlexible CouplingsPage C-286 MCL Gearmotor CouplingsMounting bracketscannot be used with SH geared DampersPage C-289 Effective at suppressing motorvibration and improving Stepping motor and Driver PackagesTo achieve maximum performance.

4 Motors with dedicateddrivers are InputDC InputUMKS eriesCSKS eries Page C-149 Page C-1612-Phase Stepping motor Driver with Built-in Indexer UI2120 GCombines a high performance Stepping motor driver withmicroprocessor intelligence and an integrated pulsegenerator. Page C-241C-185 Stepping MotorsMotor & Driver PackagesClosed Loop AAC InputDC Input5-Phase MicrostepAC InputDC Input5-Phase Full/HalfDC InputAC InputDC Input2-Phase Full/Halfwith IndexerDriverControllersASAS PLUSASCRKCFK2 CSKUMK CSKPK/PVUI2120 GEMP401 EMP402SG8030 JSMKA ccessoriesPMCLow-SpeedSynchronousMotorsI ntroductionPKwithEncoder2-Phase Stepping MotorsBefore Usinga SteppingMotorwithoutEncoderC-186 in.

5 ( 28 mm) in. ( 35 mm) Stepping Motors in. ( 42 mm) in. ( mm) in. ( 60 mm) in. ( 85 mm) in. ( 90 mm)Standard TypeThe standard PKSeries 2-Phase Stepping motor offersbalanced performance enhanced by high torque, lowvibration and low noise. Optimal motor size and windingspecification can be selected from a wide range of EncoderThe PKSeries 2-Phase Stepping motor with encoder offershigh torque and precise feedback capability. Encoder Feedback Type: Incremental Two feedback resolutions: 200 and 400 pulses/rev. Provides closed loop system capabilityHigh Torque TypeThis motor type combines high torque and a compact frame sizes, in.

6 (28 mm), in. (35 mm) in. (42 mm), are available. Each specification providestorque equivalent to a motor of the next larger frame size,supporting high-torque operation even in the example, high torque type PK246PB[ motor frame in. (42 mm)] has the same holding torque as thestandard type PK266-01B[ motor frame size in. ( )]. This means a smaller size motor will maintain thesame torque. This allows for downsized and lightweightequipment. PKSeriesHigh Resolution TypeThese 2-Phase , high resolution Stepping Motors have half thestep angle of standard Stepping Motors .

7 The high resolutiontype increases motor resolution from 200 steps/revolution to400 steps/revolution. Smaller step-angles can be achievedby half-step driving or microstep driving. Such options,however, do not improve accuracy. Other than having twiceas many rotor teeth as standard Stepping Motors , all otherstructures are exactly the same as the standard Speed [kHz] /step100200300 Speed [r/min]Torque [oz-in] [N m]Measured by Bipolar (Series) Constant Current Driver High Torque Type PK246PB Current A/phase, 24 VDC Standard Type PK266-01B Current A/phase, 24 VDCwith (54) in.

8 ( mm) (59) in.( 42 mm )High Torque TypePK246PB132 oz-in( N m) oz-in2(114 10-7 kg m2)Standard TypePK266-01B166 oz-in( N m) oz-in2(300 10-7 kg m2)TypeModelHolding TorqueRotor Accuracy0400 Step(1) High Resolution Type ( /Step) Accuracy0200 Step(2) Standard Type ( /Step) Accuracy0400 Step(3) Standard Type ( /Step)Angle SHGeared TypeIncorporating SHgears with high permissible torque, thesemodels offer the full benefit of the speed reducing capabilityof geared Motors , delivering high resolution, high torque andsmooth low-speed rotation. With performance like this, theSHGeared type can easily satisfy the requirements ofvarious kinds of low-speed positioning applications.

9 Smooth Rotation at Low SpeedsStepping Motors at low speed produce a relatively highamount of vibration. Use of a gearhead allows for anincrease in the speed of the motor which results in asmoother motion while maintaining the low output speedrequired by the application. Six Gear RatiosSHgeared Motors are available with six different gear :1, :1, 9:1, 10:1, 18:1, 36:1. The low ratios of thesegearheads can greatly facilitate speed control of the 2-phasestepping Motors . PK223-SGtype is not available in a gear ratio of :1. Ideal for High Inertia DriveThe Stepping motor itself can drive an inertia of 10 times therotor inertia.

10 The geared type can reduce the load inertia bythe square of the gear ratio. Therefore, the geared type issuitable for driving larger inertial Inertia CapabilityThe PVSeries provides, on average, times higher torquethan a standard Stepping motor . By utilizing a larger rotordiameter, larger magnets can be used to significantlyincrease the output Torque CharacteristicsAll equipment has a friction load, and the motor stops when the motor outputtorque and friction load torque are balanced. As shown in the characteristicsabove, the larger the output torque per step angle, the less the motor is influencedby the friction load, so positioning accuracy is improved.