Additional Information. Stepping Motors. Technical Reference F-1 General Information G-1. Motor & Driver Packages.

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1 Stepping Stepping dditional Information Technical Reference F- General Information G- Introduction S S PLUS SC RK CFK2 CSK PMC UMK CSK PKPV PK UI22G EMP4 SC88 EMP42 SC88E SG8J SMK ccessories Closed Loop 5-Phase Microstep C Input DC Input C Input DC Input 5-Phase FullHalf DC Input C Input DC Input & Driver Packages Stepping Driver Controllers FullHalf Indexer ORIENTL MOTOR GENERL CTLOG 224 C-8

2 Stepping. in. ( 28 mm).8 in. ( 5 mm).5 in. ( 42 mm) 2.22 in. ( 5.4 mm) 2. in. ( mm).5 in. ( 85 mm).54 in. ( 9 mm) Stepping Six frame sizes are available in a range from. in. (28 mm) to.5 in. (85 mm). In addition to the standard type, we offer standard P type (high torque), (high inertia capability), high-resolution type and SH geared type. The motor windings also come in various specifications. Wide Variety Series PK Series Size Standard Standard P (High Torque) High Resolution. in. ( 28 mm) Page C-9.8 in. ( 5 mm) Page C-2 Frame Size: in. (mm).5 in. ( 42 mm) Page C-22 Page C in. ( 5.4 mm) page C-2 Page C-28 Page C in. ( mm).5 in. ( 85 mm) 2 Page C-24 Page C-227 page C-29 2 SH Geared Page C-98 Page C-22 Page C-222 Page C-2 (High Inertia Capability) Gearhead frame size is 2.5 in. sq. ( mm sq.) 2 Gearhead frame size is.54 in. sq. (9 mm sq.) Page C-224 C-84 ORIENTL MOTOR GENERL CTLOG 224

3 ccessories (Sold Separately) Mounting Brackets Page C-295 Clean Dampers Page C-29 Flexible Couplings Page C-288 Flexible Couplings Page C-29 Stepping Mounting brackets cannot be used SH geared types. Effective at suppressing motor vibration and improving performance. Stepping and Driver Packages To achieve maximum performance, motors dedicated drivers are available. C Input DC Input UMK Series CSK Series Page C-49 Page C- MC Couplings MCL Gearmotor Couplings Stepping Driver Built-in Indexer UI22G Combines a high performance stepping motor driver microprocessor intelligence and an integrated pulse generator. Page C-24 Introduction S S PLUS SC RK CFK2 CSK PMC UMK CSK PKPV PK UI22G EMP4 SC88 EMP42 SC88E SG8J SMK ccessories Closed Loop 5-Phase Microstep C Input DC Input C Input DC Input 5-Phase FullHalf DC Input C Input DC Input & Driver Packages Stepping Driver Controllers FullHalf Indexer ORIENTL MOTOR GENERL CTLOG 224 C-85

4 Stepping. in. ( 28 mm).8 in. ( 5 mm).5 in. ( 42 mm) 2.22 in. ( 5.4 mm) 2. in. ( mm).5 in. ( 85 mm).54 in. ( 9 mm) PK Series Standard The standard PK Series 2-phase stepping motor offers balanced performance enhanced by high torque, low vibration and low noise. Optimal motor size and winding specification can be selected from a wide range of motor variations. With The PK Series 2-phase stepping motor encoder offers high torque and precise feedback capability. Feedback : Incremental Two feedback resolutions: 2 and 4 pulsesrev. Provides closed loop system capability Standard P (High Torque) This motor type combines high torque and a compact size. Three frame sizes,. in. (28 mm),.8 in. (5 mm) and.5 in. (42 mm), are available. Each specification provides torque equivalent to a motor of the next larger frame size, supporting high-torque operation even in the high-speed range. For example, Standard P type PK24PB [motor frame size.5 in. (42 mm)] has the same holding torque as the standard type PK2-B [motor frame size 2.22 in. (5.4 mm)]. This means a smaller size motor will maintain the same torque. This allows for downsized and lightweight equipment. Torque [N m].5..5 Torque [oz-in] Measured by Bipolar (Series) Constant Current Driver Standard P PK24PB Current.85 phase, 24 VDC Standard PK2-B Current.7 phase, 24 VDC Damper 2 Speed [rmin].5 Pulse Speed [khz].8 step High Resolution These 2-phase, high resolution stepping motors have half the step angle of standard stepping motors. The high resolution type increases motor resolution from 2 stepsrevolution to 4 stepsrevolution. Smaller step-angles can be achieved by half-step driving or microstep driving. Such options, however, do not improve accuracy. Other than having twice as many rotor teeth as standard stepping motors, all other structures are exactly the same as the standard motors..9deg.9deg Step 4 () High Resolution (.9 Step).9deg.9.9deg Step 2 (2) Standard (.8 Step).9deg 2.2 (59) 2. (54).9deg 4 Step () Standard (.9 Step).5 in. ( 42 mm ) 2.22 in. ( 5.4 mm) Standard P PK24PB 2 oz-in (.9 N m).77 oz-in 2 (4-7 kg m 2 ) Model Holding Torque Rotor Inertia Standard PK2-B oz-in (.7 N m).4 oz-in 2 ( -7 kg m 2 ) C-8 ORIENTL MOTOR GENERL CTLOG 224

5 SH Geared Incorporating SH gears high permissible torque, these models offer the full benefit of the speed reducing capability of geared motors, delivering high resolution, high torque and smooth low-speed rotation. With performance like this, the SH Geared type can easily satisfy the requirements of various kinds of low-speed positioning applications. Smooth Rotation at Low Speeds Stepping motors at low speed produce a relatively high amount of vibration. Use of a gearhead allows for an increase in the speed of the motor which results in a smoother motion while maintaining the low output speed required by the application. Six Gear Ratios SH geared motors are available six different gear ratios:.:, 7.2:, 9:, :, 8:, :. The low ratios of these gearheads can greatly facilitate speed control of the 2-phase stepping motors. PK22-SG type is not available in a gear ratio of.:. Ideal for High Inertia Drive The stepping motor itself can drive an inertia of times the rotor inertia. The geared type can reduce the load inertia by the square of the gear ratio. Therefore, the geared type is suitable for driving larger inertial loads. High Inertia Capability The provides, on average,.5 times higher torque than a standard stepping motor. By utilizing a larger rotor diameter, larger magnets can be used to significantly increase the output torque. Torque [N m] Torque [oz-in] Stator Rotor step Pulse Speed [khz] ngle Torque Characteristics -.8 PV29-D2.8B: Bipolar 2.8 Phase, 24 VDC Standard PK29-E4.5B: Bipolar (series).8 Phase, 24 VDC Standard PK28-E2.B: Bipolar (parallel) 2.8 Phase, 24 VDC Speed [rmin] -.9 Torque T TH2 TH TL Increased Size TL ll equipment has a friction load, and the motor stops when the motor output torque and friction load torque are balanced. s shown in the characteristics above, the larger the output torque per step angle, the less the motor is influenced by the friction load, so positioning accuracy is improved. Stop positioning displacement by external force does not occur as often..9 TL: Friction Load Torque TH,TH2: Maximum Holding Torque.8 Shaft structure (Cross section perpendicular to shaft) positional error Standard PK Series [ngle] Standard PK Series positional error Stepping Introduction S S PLUS SC RK CFK2 CSK PMC UMK CSK PKPV PK UI22G EMP4 SC88 EMP42 SC88E SG8J SMK ccessories Closed Loop 5-Phase Microstep C Input DC Input C Input DC Input 5-Phase FullHalf DC Input C Input DC Input & Driver Packages Stepping Driver Controllers FullHalf Indexer ORIENTL MOTOR GENERL CTLOG 224 C-87

6 Stepping. in. ( 28 mm).8 in. ( 5 mm).5 in. ( 42 mm) 2.22 in. ( 5.4 mm) 2. in. ( mm).5 in. ( 85 mm).54 in. ( 9 mm) Product Number Code PK Series Standard, High Resolution 4 - B : Legacy Number D: 4 Leads E, F: 8 Leads Step ngle Blank:.8 (Standard) M:.9 (High Resolution) Frame Size 4:.5 in. sq. (42 mm sq.) : 2.22 in. sq. (5.4 mm sq.) 9:.5 in. sq. (85 mm sq.) Standard P (High Torque) PV 2 P Standard P Frame Size 2:. in. sq. (28 mm sq.) :.8 in. sq. (5 mm sq.) 4:.5 in. sq. (42 mm sq.) (High Inertia Capability) - 2 U.S.. Version B U.S.. Version : Leads D: 4 Leads Frame Size 2. in. sq. ( mm sq.) Standard, High Resolution SH Geared - : Legacy Number E: 8 Leads Step ngle Blank:.8 (Standard) M:.9 (High Resolution) Frame Size :.5 in. sq. (42 mm sq.) 2 P R Resolution R: 2 PR R2: 4 PR - SG Frame Size 2:. in. sq. (28 mm sq.) 4 Gear Ratio SG: SH Gear - SG SH Geared U.S.. Version Frame Size 4:.5 in. sq. (42 mm sq.) : 2. in. sq. ( mm sq.) 9:.54 in. sq. (9 mm sq.) Gear Ratio C-88 ORIENTL MOTOR GENERL CTLOG 224

7 Connection Diagrams Wiring Diagrams 4 Lead Lead 8 Lead Stepping Phase Wire Connection Diagrams 4 Lead Bipolar Connection 8 Lead Unipolar Connection Phase Phase (4) (5) () Lead Unipolar Connection (4) (5) N.C. (5) () The numbers inside the parentheses indicate the connector pin No. of the standard P type motor. N.C.: No Connection () (2) () 8 Lead Bipolar (Series) Connection () (2) () Lead Bipolar (Series) Connection Notes on the Speed Torque Characteristics Diagrams The speed-torque characteristics featured in this catalog are as measured a constant-current driver or a constant-voltage driver. The actual characteristics will vary depending on the driver used. Please use these diagrams only for reference purposes when selecting a motor. You should also conduct a thorough evaluation the actual driver to be used. Phase Phase (4) () () N.C. (2) () 8 Lead Bipolar (Parallel) Connection Introduction S S PLUS SC RK CFK2 CSK PMC UMK CSK PKPV PK UI22G EMP4 SC88 EMP42 SC88E SG8J SMK ccessories Closed Loop 5-Phase Microstep C Input DC Input C Input DC Input 5-Phase FullHalf DC Input C Input DC Input & Driver Packages Stepping Driver Controllers FullHalf Indexer ORIENTL MOTOR GENERL CTLOG 224 C-89