Low-Speed. Constant Speed Motors. Standard AC Motors A-203. Standard AC Motors Introduction. Low-Speed Synchronous Motors.

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1 Standard C Constant Speed Low-Speed Synchronous Standard C Introduction Induction Reversible Electromagnetic Brake V Series Clutch & Brake Synchronous Low-Speed Synchronous Low-Speed Synchronous Watertight, Dust-Resistant Right-ngle Gearheads Linear Heads Brake Pack ccessories Installation -2

2 Standard C RoHS-Compliant Low-Speed Synchronous SMK Series Low-speed synchronous motors are the continuous rated synchronous motors in which quick bi-directional rotation is possible. The basic construction of lowspeed synchronous motors is the same as that of stepping motors. Since they can be driven by an C power supply, they are sometimes called C stepping motors. dditional Information Technical reference Page F-1 Safety standards Page G-2 List of safety standard approved products (, Standards, File No., Certification Body) Page G-11 Features Low-Speed / Synchronous Rotation The motor rotates at a speed proportional to and accurately synchronized with the frequency of the power supply. fluctuation in load does not affect the rotation speed. t 5 Hz 6 r/min ( r/min) t 6 Hz r/min (6 r/min) For SMK14M- Continuous Rated -Run This is a capacitor-run motor that can be driven by a capacitor only (n external resistance is needed for SMK5 ). This can be driven at a continuous rating even when bi-directional operation is required. Superb Starting, Stopping and Reversing Characteristics If operated within the permissible load inertia, the motor can start, stop and reverse within 1.5 cycles (. sec at 5 Hz,.25 sec at 6 Hz) of power supply frequency. Suitable for equipment that starts and stops repeatedly such as conveyors. Stop Start-Up Stop Start-Up Bi-directional operation can be repeated continuously. Continuous bi-directional operation Precise Positioning The motor can be stopped instantly by turning off the power supply. The stopping accuracy within the motor's permissible load inertia is ±1. When a precision switch is used, simple and precise positioning is possible. Vertical pplications Constant speed can be maintained even during gravitational operations. Low-speed synchronous motors are suitable for applications, such as an elevator system, whereby vertical operation at a constant speed is required. Holding Since a permanent-magnet, multi-poled rotor is used, the motor has holding torque even when the motor is not energized. When used with a gearhead, comparatively high holding torque can be utilized. When, at motor standstill, a DC power supply is used, a large holding torque almost equal to that of a stepping motor can be produced. DC Excitation Page -21 Long Life, Low Noise GN-S Gearhead is vailable. The long life, low noise GN-S gearhead achieves a long rated life of 1 hours, twice the level of a conventional gearhead, by adopting innovative technologies and structure. lso, the gearhead is designed for low noise. Details of long life, low noise GN-S gearhead Page -21 SMK- indicates a geared motor consisting of a special gearhead and a motor. The gearhead cannot be replaced. RoHS-Compliant The SMK Series conforms to the RoHS Directive that prohibits the use of six chemical substances including lead and cadmium. Details of RoHS Directive Page G-8-24 ORIENTL MOTOR GENERL CTLOG 29/21 Features -24 / System Configuration -25 / Product Line -

3 System Configuration Gearhead (Sold separately) Parallel Shaft Gearheads ( Page -21) Standard C Introduction SMK Series (Round shaft) Induction Reversible C Power Supply (Main power supply) Electromagnetic Brake Cap (Included) V Series External Resistor (Included) Only for SMK5 type (Included) Clutch & Brake ccessories (Sold separately) Synchronous Low-Speed Synchronous 1Mounting Brackets ( Page C-12. When combining a pinion shaft type with 2GN S or 5GN S Page -2) 2Flexible Couplings ( Page C-. When combining a pinion shaft type with 2GN S or 5GN S Page -292) CR Circuit for Surge Suppression ( Page -2) Watertight, Dust-Resistant No. Product Name Overview Page 1 2 Mounting Brackets Flexible Couplings CR Circuit for Surge Suppression Dedicated mounting bracket for the motor and gearhead. Coupling that connects the motor shaft to the driven shaft. Used to protect relay and switch contacts (EPCR121-2). -2, C , C- -2 Right-ngle Gearheads Example of System Configuration (Sold separately) SMK Series (Round shaft) Mounting Bracket Flexible Coupling SMK27- PL2P-2 MCSF4 Gearheads cannot be combined with round shaft type motors. The system configuration shown above is an example. Other combinations are available. Linear Heads Brake Pack ccessories Installation Specifications -27 / Dimensions -29 / Connection and Operation

4 Standard C Product Number Code SMK 14 M Series SMK: SMK Series 2 Frame Size : 42 mm (1.65 in.) 2: 56.4 mm (2.22 in.) [GN Pinion Shaft Type 6 mm (2.6 in.)] 5: 85 mm (.5 in.) [GN Pinion Shaft Type 9 mm (.54 in.)] 14:.14 N m (19.8 oz-in.) 16:.16 N m (22 oz-in.) 7:.7 N m (52 oz-in.) 5:.5 N m (71 oz-in.) 1: 1. N m (142 oz-in.) 16: 1.6 N m (22 oz-in.) Speed Blank: 6/ r/min (5/6 Hz) 4 M: /6 r/min (5/6 Hz) 5 Power Supply Voltage : Single-Phase 1/115 VC 6 Shaft Type, : Round Shaft GN: GN Type Pinion Shaft Gearhead 5 GN 5 S Gearhead Frame Size 2: 6 mm (2.6 in.) 5: 9 mm (.54 in.) 2 Type of Pinion GN: GN Type Pinion Gear Ratio (Example) 5: Gear Ratio of 5:1 4 S: Long Life, Low Noise GN-S Gearhead, RoHS-Compliant Geared SMK Series SMK: SMK Series 2 Frame Size : 42 mm (1.65 in.) Power Supply Voltage : Single-Phase 1/115 VC 4 Gear Ratio (Example) 12: Gear Ratio of 12:1 5 Shaft Type : Single Shaft Product Line Power Supply Voltage Shaft Type Single-Phase 1/115 VC Geared Round Shaft GN Type Pinion Shaft SMK14- SMK14M- SMK27- SMK51- SMK516- SMK216-GN SMK55-GN Power Supply Voltage Gear Ratio Single-Phase 1/115 VC SMK- The following items are included in each product.,.6, 7.5, 9, 15, 18,, 6, 5, 6, 1, 12,, Cap, External Resistor, Operating Manual Only for SMK5 type Parallel Shaft Gearhead (Sold separately) Long Life, Low Noise GN-S Gearhead pplicable (Pinion shaft) Frame Size 6 mm ( 2.6 in.) Frame Size 9 mm (.54 in.) Gear Ratio 2GN S,.6, 5, 6, 7.5, 9, 12.5, 15, 18, 25,, 6, 5, 6, 5GN S 75, 9, 1, 12, 15, 18 The following items are included in each product. Gearhead, Mounting Screws, Operating Manual Following gearheads are also available. For details, please refer to website ( or contact the nearest Oriental sales office. Gearhead Type Gearhead Gear Ratio 2GN K 18 Parallel Shaft GN-K Gearhead 5GN K 18 - ORIENTL MOTOR GENERL CTLOG 29/21 Features -24 / System Configuration -25 / Product Line -

5 Specifications Continuous Rating SMK14- SMK14M- SMK27- SMK216-GN SMK51- SMK516- SMK55-GN Voltage VC Single-Phase 1 Single-Phase 1 Single-Phase 1 Single-Phase 1 Single-Phase 1 Single-Phase 1 Single-Phase 1 Frequency Hz Current N m (oz-in).11 (15.6).12 (17.).1 (18.4).11 (15.6).12 (17.).1 (18.4).7 (52).7 (52).7 (52).16 (22).16 (22).16 (22) 1. (142) 1. (142) 1.1 (156) 1.6 (22) 1.8 (25) 2.1 (29).5 (71).5 (71).5 (71) Speed r/min To calculate holding torque for gearmotors, use the following formula: listed holding torque gear ratio. Note that the gearmotor holding torque should be lower than the permissible torque on the gear output shaft. SMK14 is not a standard certified product. : Impedance protected Geared Voltage VC Frequency Hz Current Speed 1 r/min Holding mn m (oz-in) 9 (1.27) 4.5 (.6) 25 (.5) 15 (2.1) 6 (5.1) 89 (12.6) 6 (5.1) Rotor Inertia J kg m 2 (oz-in 2 ) (.) (.) 1 7 (1.64) (.66) (7.7) (14.8) (7.7) Holding 2 Rotor Inertia J mn m (oz-in) kg m 2 (oz-in 2 ) μf Single-Phase 1 SMK (1.27) (.) Hz: Gear output shaft speed = 6/Gear Ratio [r/min] 6 Hz: Gear output shaft speed = /Gear Ratio [r/min] 2 To calculate holding torque for gearmotors, use the following formula: listed holding torque gear ratio. Note that the gearmotor holding torque should be lower than the permissible torque on the gear output shaft. Gearmotor - Table Page -28 : Impedance protected General Specifications μf External Resistor Ω W Item Specifications Insulation Resistance 1 MΩ or more when 5 VDC megger is applied between the windings and the case after rated operation under normal ambient temperature and humidity. Dielectric Strength Sufficient to withstand 1.5 kvc at 5 Hz or 6 Hz applied between the windings and the case for 1 minute after rated operation under normal ambient temperature humidity. Temperature Rise Temperature rise of motor case is 55 C (99 F) or less measured by thermometer method after rated operation under normal ambient temperature and humidity. Insulation Class UL, CS: Class [15 C (221 F)] EN: Class E [12 C (248 F)] Overheat Protection Impedance protection mbient Temperature 1 +4 C ( F ) (non-freezing) Shaft Runout.5 mm (.2 in.) T.I.R. 1 Concentricity.75 mm (. in.) T.I.R. 1 Perpendicularity.75 mm (. in.) T.I.R. 1 Shaft Radial Play 2.25 mm (.1 in.) maximum [Load 5 N (1.12 lb.)] Shaft xial Play.75 mm (. in.) maximum [Load 1 N (2.2 lb.)] Step ccuracy ±.6 1 T.I.R. (Total Indicator Reading): The total dial gauge reading when the measurement section is rotated one rotation centered on the reference axis center. 2 Radial Play: Displacement in shaft position in the radial direction, when a 5 N (1.12 lb.) load is applied in the vertical direction to the tip of the motor s shaft. xial Play: Displacement in shaft position in the axial direction, when a 1 N (2.2 lb.) load is applied to the motor s shaft in the axial direction ϕ.75.5 Standard C Introduction Induction Reversible Electromagnetic Brake V Series Clutch & Brake Synchronous Low-Speed Watertight, Synchronous Dust-Resistant Right-ngle Gearheads Linear Heads Brake Pack ccessories Installation Specifications -27 / Dimensions -29 / Connection and Operation

6 Standard C Gearmotor Table /Gearhead Unit = Upper values: N m/lower values: lb-in Gear Ratio SMK216-GN/2GN S SMK55-GN/5GN S colored background ( ) indicates gear shaft rotation in the same direction as the motor shaft, while the others rotate in the opposite direction Geared Unit = Upper values: N m/lower values: lb-in SMK- Gear Ratio colored background ( ) indicates gear shaft rotation in the same direction as the motor shaft, while the others rotate in the opposite direction. Permissible Overhung Load and Permissible Thrust Load, Geared Unit = N (lb.) SMK14 SMK27 SMK51, SMK516 SMK Permissible Overhung Load Distance from Shaft End mm ( in.) 5 mm (.2 in.) 1 mm (.9 in.) 15 mm (.59 in.) 2 mm (.79 in.) 2 (4.5) 54 (12.1) (58) 1 (2.2) 25 (5.6) 67 (15) 29 (65) 15 (.) 4 (7.6) 89 (2) 4 (76) 2 (4.5) 52 (11.7) 1 (29) 9 (87) (6.7) Gearhead Unit = N (lb.) 2GN S 5GN S Gear Ratio Overhung Load Distance from Shaft End [mm (in.)] 1 mm (.9 in.) 2 mm (.79 in.) 5 (11.2) 12 (27) 25 (56) (67) Permissible Thrust Load 8 (18) 18 (6.7) (4) 5 (78) 1 45 (22) (11) 48 (18) Permissible Thrust Load The permissible thrust load shall be no greater than the motor mass. 15 (.) -28 ORIENTL MOTOR GENERL CTLOG 29/21 Features -24 / System Configuration -25 / Product Line -

7 Permissible Load Inertia J Starting, stopping and reversing characteristics vary according to the amount of load inertia directly coupled to the motor. Permissible load inertia, therefore, refers to the upper limit of load inertia under which the motor can be operated normally when the load is connected directly to the motor shaft. When the amount of load inertia is too great, the motor may vibrate or reverse direction. It is recommended to use flexible couplings when connecting the load to the motor shaft. Permissible Load Inertia J of Gearhead Permissible Load Inertia J of Permissible Load Inertia J 1 4 kg m 2 (oz-in 2 ) SMK14- SMK14M-.275 (1.5) SMK (1.7) SMK51-7 (8) SMK (66) /Gearhead Unit = Upper values: 1 4 kg m 2 /Lower values: oz-in 2 Gear Ratio SMK216-GN/2GN S SMK55-GN/5GN S Geared Unit = Upper values: 1 4 kg m 2 /Lower values: oz-in 2 SMK- Gear Ratio Standard C Introduction Induction Reversible Electromagnetic Brake V Series Dimensions Unit = mm (in.) Mounting screws are included with gearheads (except for geared motor). Dimensions for mounting screws Page mm ( 1.65 in.) SMK14-, SMK14M- Mass:. kg (.66 lb.) B1 9. (.7) 12.4 (.49) 42.5 (1.67) 2±1 (.79±.4) 15±.25 (.591±.1) 85 mm (.5 in.) SMK51- Mass: 1.7 kg (.7 lb.) B127U 4.5±.15 (.177±.6) ϕ5.12 (ϕ ) ϕ22. (ϕ ) 2 (.8) Leads mm (12 in.) Length UL Style 6, WG24 66 (2.6) 1 (.9) 2 (.8) 42 (1.65) 1±.2 (1.22±.8) 1±.2 (1.22±.8) 12.6 (.5) 4 M 4.5 (.177) Deep 7±1 (1.46±.4) 25±.25 (.984±.1) ϕ ϕ.5.7 (1/2") ϕ7.25±. (ϕ2.875±.1) Leads mm (12 in.) Length UL Style 6, WG2 4 (.16) 42 (1.65) 56.4 mm ( 2.22 in.) SMK27- Mass:.7 kg (1.5 lb.) B1 85 (.5) 69.58±.5 (2.74±.14) 4 ϕ6.5 (ϕ.256) Thru 54 (2.1) 2±1 (.79±.4) 56.4 (2.22) 47.14±.5 5 (.2) 1.6 (.6) (1.86±.14) 15±.25 4 ϕ4.5 (ϕ.177) Thru (.591±.1) 5.8±.15 (.228±.6) ϕ ϕ.25.5 (1/4") Leads mm (12 in.) Length UL Style 6, WG ±.5 (2.74±.14) 85 (.5) ±.15 (.45±.6) ϕ8.1±. (ϕ1.5±.12) 11.5±.15 (.45±.6) 47.14±.5 (1.86±.14) 56.4 (2.22) Clutch & Brake Synchronous Low-Speed Watertight, Synchronous Dust-Resistant Right-ngle Gearheads Linear Heads Brake Pack ccessories Installation Specifications -27 / Dimensions -29 / Connection and Operation

8 Standard C SMK516- Mass: 2.8 kg (6.2 lb.) B128U 96 (.78) 1 (.9) 2 (.8) 7±1 (1.46±.4) 25±.25 (.984±.1) 85 (.5) 69.58±.5 (2.74±.14) 4 ϕ6.5 (ϕ.256) Thru ϕ ϕ.5.7 (1/2") Leads mm (12 in.) Length UL Style 6, WG2 ϕ7.25±. (ϕ2.875±.1) ±.15 (.45±.6) 69.58±.5 (2.74±.14) 6mm ( 2.6 in.) /Gearhead Gearhead Gear Ratio L DXF 18 (1.18) 69U SMK216-GN 2GN S (1.57) 69BU Mass:.45 kg (.99 lb.) Gearhead.4 kg (. lb.) 9 (1.54) 5 (.2) L 5 (.2) 2±1 (1.±.4) 12.7 (.5) 7.47 (.29) ϕ ϕ (5/16") 1±.5 (.9±.2) ϕ24 (ϕ.94) 6 (2.6) 4 ϕ4.5 (ϕ.177) Thru 56.4 ( 2.22) 7±.5 (2.76±.2) 6 (2.6) 11.5±.15 (.45±.6) 85 (.5) Leads mm (12 in.) Length UL Style 6, WG2 9mm (.54 in.) /Gearhead Gearhead Gear Ratio L DXF (1.65) 61U SMK55-GN 5GN S (2.6) 61BU Mass: 1.7 kg (.7 lb.) Gearhead 1.5 kg (. lb.) 66 (2.6) 1 (.9) L 2±1 4 (1.±.4) (.16) 19 (.75) 11.4 (.45) ϕ ϕ.5.7 (1/2") 18±.5 (.71±.2) ϕ6 (ϕ1.42) 9 (.54) 4 ϕ6.5 (ϕ.256) Thru 85 (.5) Leads mm (12 in.) Length UL Style 6, WG2 14±.5 (4.9±.2) 9 (.54) -21 ORIENTL MOTOR GENERL CTLOG 29/21 Features -24 / System Configuration -25 / Product Line -

9 42mm ( 1.65 in.) Geared SMK- Mass:.5 kg (1.1 lb.) B2 2±1 (.79±.4) 69 (2.) (.12) 12 (.47) 4.5±.15 (.177±.6) ϕ5.12 (ϕ ) 8 (.1) ϕ18 (ϕ.71) 42 (1.65) 1±.2 (1.22±.8) 1±.2 (1.22±.8) 42 (1.65) Standard C Introduction Induction 9. (.7) 12.4 (.49) Leads mm (12 in.) Length UL Style 6, WG (.5) 4 M 7 (.28) Deep 4 (.16) Reversible (included) Dimension No. 1 ϕ4. 2 (ϕ.169) (.79) B 4(.16) B+1 (.9) 4.5 (.18) 1 (.9) C 6 (.24) Dimensions Unit = mm (in.) SMK14- SMK14M- SMK- SMK27- SMK216-GN SMK51- SMK516- SMK55-GN CH6BFUL CH12UL CH25UL CH6BUL Dimension No. 2 ϕ4. 2 (ϕ.169) (.79) B C 1 (1.22) 1 (1.22) 1 (1.22) 1 (1.22) 14.5 (.57) 14.5 (.57) 17 (.67) 14.5 (.57) External Resistor (included with SMK5 only) Mass: 6 g (2.1 oz.) 5 (1.8) 4.5 (.18) 19 (.75) 1 (.94) 85 (.5) 118 (4.65) 16 (.6) 2 (.79) B 4.5 (.18) 4(.16) 2.5 (.9) 2.5 (.9) 27 (1.7) 2.5 (.9) B+1 (.9) 1 (.9) C Mass g (oz.) Dimension No. 15 (.5) 1 17 (.6) 2 2 (.71) 2 15 (.5) 2 Cap Included Electromagnetic Brake V Series Clutch & Brake Synchronous Low-Speed Watertight, Synchronous Dust-Resistant Right-ngle Gearheads Linear Heads Brake Pack ccessories Installation Specifications -27 / Dimensions -29 / Connection and Operation

10 Standard C Connection and Operation When the switch is set to "", the motor rotates in the clockwise direction. When set to "", the motor rotates in the counterclockwise direction. The motor can be stopped instantly by turning off the power supply. The direction of motor rotation is as viewed from the shaft end of the motor. The capacitor and external resistor (for SMK5 only) are included with the motor. SMK Type SMK2 Type Red Red Single-Phase 1/115 VC R C SW R C White Blue Single-Phase 1/115 VC R C SW R C Gray Blue SMK5 Type Single-Phase 1/115 VC R C SW R C Red Gray Blue External Resistor Please note that the external resistor may generate heat depending on the operating conditions. To protect the contact point of relays and switches, always connect a CR circuit for surge suppression. The EPCR121-2 surge suppressor circuit is available as an accessory. Page -2 When the geared motor or GN gearheads are used, the rotating direction of output shaft differs the gear ratio. Page -28 How to connect a capacitor Page -1 Starting Time Low-speed synchronous motors offer superb starting, stopping and reversing characteristics. Provided that the motor is operating within permissible load inertia limits, it can be started, stopped or reversed within 1.5 cycles of the applied frequency. The motor will start and reach a steady speed in the time shown in the table. s seen in this table, there is a certain amount of variation in the time required for the motor to reach the set speed. This is attributable to factors linked with the phase of the power source and the relative positions of the rotor and stator when the current is applied. One method of reducing these variations is to use a zero cross switch. SMK14- SMK14M- SMK- SMK27- SMK216-GN SMK51- SMK55-GN SMK516- Load Inertia: J Starting Time (ms) Stopping Time (ms) kg m 2 oz-in 2 Start Up Settling Settle Down Settling Enter the gear ratio in the box ( ) within the model number ORIENTL MOTOR GENERL CTLOG 29/21 Features -24 / System Configuration -25 / Product Line -

11 DC Excitation When a holding torque larger than the static holding torque of the stopped motor is required, apply a DC voltage after the C power supply off. Connection Diagrams 1-Phase Excitation C Power Supply DC Power Supply R R R R C C C C R C R C (Parallel) Red Gray (White) Blue External Resistor (For SMK5 only) R C (Series) C Power Supply R R C DC Power Supply C External Resistor (For SMK5 only) R R R C R C R C C C Red Gray (White) Blue Standard C Introduction Induction Reversible C Power Supply R C R R C C Red Gray (White) Electromagnetic Brake R DC Power Supply C External Resistor (For SMK5 only) R R R C C C Blue Please note that the external resistor may generate heat depending on the operating conditions. The white leads listed in parentheses are only for the SMK. Connect the supplied external resistor to the capacitor in series for the SMK5 model. External resistors are not needed for the SMK and SMK2 models. To prevent DC power supply damage caused by voltage surges, connect a surge suppressor circuit between the contact points of the relays and switches. The EPCR121-2 surge suppressor circuit is available as an accessory. Page -2 Characteristics for DC Excitation These values apply to the motor only. To calculate holding torque for gearmotors, use the following formula: listed holding torque gear ratio Note that the gearmotor holding torque should be lower than the permissible torque on the gear output shaft. Gearmotor Table Page on the chart indicates permissible applied voltage. SMK14-, SMK14M- SMK- Holding [oz-in] Holding [N m] (Parallel) SMK14-, SMK- SMK14M- 1-Phase (Series) Excitation Voltage [VDC] SMK51-, SMK55-GN Holding [oz-in] Holding [N m]. (Parallel) 2.5 (Series) (Parallel) (Series) 2. 1-Phase Excitation 1-Phase Excitation 1.5 SMK51-1. SMK55-GN Voltage [VDC] SMK27-, SMK216-GN Holding [oz-in] Holding [N m] SMK516- Holding [oz-in] Holding [N m] Phase Excitation (Parallel) (Parallel) 1 2 (Parallel) 5 1-Phase Excitation 1-Phase Excitation 1 15 Voltage [VDC] 1-Phase Excitation (Series) SMK27- SMK216-GN (Series) (Series) Voltage [VDC] V Series Clutch & Brake Synchronous Low-Speed Watertight, Synchronous Dust-Resistant Right-ngle Gearheads Linear Heads Brake Pack ccessories Installation Specifications -27 / Dimensions -29 / Connection and Operation

12 Standard C -214 ORIENTL MOTOR GENERL CTLOG 29/21