UMK M A A. RoHS-Compliant. 2-Phase Stepping Motor and Driver Package. Features. Product Number Code. Product Line

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1 RoHS-Compliant Stepping Motor and Package UMK Series Additional Information Technical reference Page F- The UMK Series is a -phase stepping motor (resolution: per rotation) with easy-handling AC input driver package. It provides enhanced high-speed characteristics compared with motor packages combined with a DC input driver. Features Selectable from Six Types of Motors The product line now has two frame sizes [ mm (.6 in.), 6. mm (. in.)]. Three kinds of output torque are available for each size. (If lower vibration and lower noise are required, -phase stepping motors are recommended.) mm (.6 in.) 6. mm (. in.) Product Number Code UMK 6 6 M A A 6 7 Compact The UMK Series driver offers high output of.9 to A/phase in a compact body of mm mm mm (.8 in..9 in.. in.) based on surface mount technology and optimized heat design. A Full Range of Functions The UMK Series has a range of built-in functions such as automatic current cutoff, pulse input mode switching, step angle select and overheat output logic switching. All these functions can be controlled using the front panel switches and monitored by LEDs. The series also comes with a timing output that facilitates mechanical homing. RoHS-Compliant The UMK 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 Series UMK: UMK Series : Motor Frame Size : mm (.6 in.) 6: 6. mm (. in.) Motor Case Length Motor Type Blank: Standard Type M: High-Resolution Type 6 Motor Shaft Type A: Single Shaft B: Double Shaft 7 U.S.A. Version Product Line Standard Type Model (Single shaft) UMKAA UMKAA UMKAA UMK6AA UMK66AA UMK68AA Model (Double shaft) UMKBA UMKBA UMKBA UMK6BA UMK66BA UMK68BA High-Resolution Type Model (Single shaft) Model (Double shaft) UMKMAA UMKMBA UMKMAA UMKMBA UMKMAA UMKMBA UMK6MAA UMK6MBA UMK66MAA UMK66MBA UMK68MAA UMK68MBA The following items are included in each product. Motor,, Mounting Bracket for (with screws), Operating Manual C- ORIENTAL MOTOR GENERAL CATALOG 9/ Features C- / Product Line C- / System Configuration C-

2 System Configuration An example of a single-axis system configuration with the EMP Series controller. UMK Series Motor Accessories and Peripheral Equipment (Sold separately) Motor Mounting Brackets ( Page C-) Example of System Configuration (Sold separately) UMK66BA EMP- Flexible Couplings ( Page C-) Motor Mounting Bracket PALP- Controller (Sold separately) Flexible Coupling MCS6F Controller ( Page C-69) Clean Dampers ( Page C-) D6CL-6.F Connector Terminal Block Conversion Unit [ m (. ft.)] CCT Connector Terminal Block Conversion Unit ( Page C-8) No. Product Name Overview Page Controller This controller outputs pulse commands that determine the rotating amount and rotating speed. C-69 Motor Mounting Brackets Flexible Couplings Clean Dampers Connector Terminal Block Conversion Unit Dedicated mounting bracket for the motor. Coupling that connects the motor shaft to the driven shaft. Dedicated damper for suppressing stepping motor vibration. Set of terminal block and cable (CCT) for connecting the EMP Series controller and host controller [ m (. ft.)]. C- C- C- C-8 UMK Series Controller Clean Damper The system configuration shown above is an example. Other combinations are available. VDC Power Supply (Not supplied) Programmable Controller (Not supplied) AC Power Supply (Main power supply) (Not supplied) AC Input DC Input AC Input DC Input Without Encoder With Encoder Controllers Stepping Motors Introduction AS ASC RK Full/Half UMK CRK RBK CMK PK/PV PK EMP SG8J Accessories Installation Specifications, Characteristics C- / Dimensions C-7 / Connection and Operation C-8 / Motor and Combinations C- C-

3 Standard Type Motor Frame Size mm (.6 in.), 6. mm (. in.) Specifications Model Single Shaft UMKAA UMKAA UMKAA UMK6AA UMK66AA UMK68AA Double Shaft UMKBA UMKBA UMKBA UMK6BA UMK66BA UMK68BA Maximum Holding Torque N m (oz-in).6 ().6 (6). ().9 ().9 (7). (9) Rotor Inertia J kg m (oz-in ) 7 (.9) 7 (.) 68 7 (.7) 7 (.66) 7 (.6) 8 7 (.6) Rated Current A/Phase.9. Basic Step Angle.8 Power Source Single-Phase VAC±% 6 Hz or Single-Phase VAC ±% /6 Hz A. A. A Excitation Mode Mass Dimension No. How to read specifications table Page C- :.8 /step Half Step:.9 /step Motor kg (lb.). (.6).7 (.9). (.77). (.99).7 (.) (.) kg (lb.).7 () Motor Speed Torque Characteristics How to read speed torque characteristics Page C- UMKAA/UMKBA Power Input: VAC Current:.9 A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )..8 /step. Half Step.9 /step... () () () UMK6AA/UMK6BA Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in )..8 /step. Half Step.9 /step... () () () UMKAA/UMKBA Power Input: VAC Current:. A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )...8 /step Half Step.9 /step..... () () () UMK66AA/UMK66BA 6 Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in ) () () ().8 /step Half Step.9 /step UMKAA/UMKBA Power Input: VAC Current:. A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )..8 /step Half Step.9 /step... () () () UMK68AA/UMK68BA () () () Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in ).6..8 /step Half Step.9 /step The pulse input circuit responds up to approximately khz with a pulse duty of %. Notes: Pay attention to heat dissipation from motor and driver. In particular, remember that the motor will produce a considerable amount of heat under certain conditions. Be sure to keep the temperature of the motor case under C ( F). The driver's automatic current cutback function at motor standstill reduces maximum holding torque by approximately %. C- ORIENTAL MOTOR GENERAL CATALOG 9/ Features C- / Product Line C- / System Configuration C-

4 High-Resolution Type Motor Frame Size mm (.6 in.), 6. mm (. in.) Specifications Model Single Shaft UMKMAA UMKMAA UMKMAA UMK6MAA UMK66MAA UMK68MAA Double Shaft UMKMBA UMKMBA UMKMBA UMK6MBA UMK66MBA UMK68MBA Maximum Holding Torque N m (oz-in).6 ().6 (6). ().9 ().9 (7). (9) Rotor Inertia J kg m (oz-in ) 7 (.9) 7 (.) 68 7 (.7) 7 (.66) 7 (.6) 8 7 (.6) Rated Current A/Phase.9. Basic Step Angle.9 Power Source Single-Phase VAC±% 6 Hz or Single-Phase VAC ±% /6 Hz A. A. A Excitation Mode Mass Dimension No. How to read specifications table Page C- :.9 /step Half Step:. /step Motor kg (lb.). (.). (.66).7 (.8). (.99).7 (.) (.) kg (lb.).7 () Motor Speed Torque Characteristics How to read speed torque characteristics Page C- UMKMAA/UMKMBA.. Power Input: VAC Current:.9 A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )..... () () () UMK6MAA/UMK6MBA /step Half Step. /step UMKMAA/UMKMBA Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in )..9 /step. Half Step. /step... () () ().. Power Input: VAC Current:. A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )...9 /step Half Step. /step..... () () () UMK66MAA/UMK66MBA () () () The pulse input circuit responds up to approximately khz with a pulse duty of %. Notes: Pay attention to heat dissipation from motor and driver. In particular, remember that the motor will produce a considerable amount of heat under certain conditions. Be sure to keep the temperature of the motor case under C ( F). The driver's automatic current cutback function at motor standstill reduces maximum holding torque by approximately %. Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in ) /step Half Step. /step UMKMAA/UMKMBA. Power Input: VAC Current:. A/Phase ( Phases ) With Damper DCL-.F: JL = 7 kg m (.86 oz-in )..9 /step Half Step. /step.. () () () UMK68MAA/UMK68MBA Power Input: VAC Current: A/Phase ( Phases ) With Damper D6CL-6.F: JL = 7 kg m (.77 oz-in ).6.9 /step Half Step. /step.. () () () AC Input DC Input AC Input DC Input Without Encoder With Encoder Controllers Stepping Motors Introduction AS ASC RK Full/Half UMK CRK RBK CMK PK/PV PK EMP SG8J Accessories Installation Specifications, Characteristics C- / Dimensions C-7 / Connection and Operation C-8 / Motor and Combinations C- C-

5 Specifications Input Signals Output Signals Functions Indicators (LED) Cooling Method Input Mode Pulse Signal (CW Pulse Signal) Rotation Direction Signal (CCW Pulse Signal) All Windings Off Signal Output Mode Excitation Timing Signal Overheat Signal Photocoupler input, Input resistance: Ω, Input current: 7 ma Photocoupler : +. V, Photocoupler : + V (Voltage between terminals) Operation command pulse signal (CW direction operation command pulse signal when in -pulse input mode), Negative logic pulse input Pulse width: μs minimum, Pulse rise/fall: μs maximum, Pulse duty: % and below Motor moves one step when the pulse input is switched from photocoupler to. Maximum input pulse frequency: khz (When the pulse duty is %) Rotation direction signal, Photocoupler : CW, Photocoupler : CCW CCW direction operation command pulse signal when in -pulse input mode, Negative logic pulse input Pulse width: μs minimum, Pulse rise/fall: μs maximum, Pulse duty: % and below Motor moves one step when the pulse input is switched from photocoupler to. Maximum input pulse frequency: khz (When the pulse duty is %) When in the "photocoupler " state, the output current to the motor is cut off and the motor shaft can be rotated manually. When in the "photocoupler " state, the current is supplied to the motor. Photocoupler, Open-collector output External use condition: VDC maximum, ma maximum The signal is output every time the excitation sequence returns to the initial stage "." (Photocoupler: ) Full step: Signal is output every pulses, Half step: Signal is output every 8 pulses The signal is output when the temperature of the driver heat sink rises above approximately 9 C (9 F). (Photocoupler: or, automatic return available) The motor current is cut off automatically if the automatic current off function is. The output logic of the photocoupler is based on the setting of the overheat output logic switch. Automatic current cutback, Automatic current Off, Pulse mode input switch, Step angle select, Overheat output logic switch Power supply input, CW/PLS input, CCW/DIR input, All windings off input, Excitation timing output, Overheat output Natural ventilation General Specifications Item Motor Insulation Class Class B [ C (66 F)] Insulation Resistance Insulation Strength Operating Environment Temperature Rise MΩ or more when VDC megger is applied between the windings and the case under normal ambient temperature and humidity. Sufficient to withstand. kvac (. kvac for UMK and UMKM types) at Hz or 6 Hz applied between the windings and the case for minute under normal ambient temperature and humidity. MΩ or more when VDC megger is applied between the following places under normal ambient temperature and humidity: Case Power input terminal Case Signal I/O terminal Power input terminal Signal I/O terminal Sufficient to withstand the following for minute under normal ambient temperature and humidity: Case Power input terminal. kvac Hz or 6 Hz Case Signal I/O terminal. kvac Hz or 6 Hz Power input terminal Signal I/O terminal. kvac Hz or 6 Hz Ambient Temperature + C (+ + F) (non-freezing) + C (+ + F) (non-freezing) Ambient Humidity 8% or less (non-condensing) Atmosphere No corrosive gases, dust, water or oil Temperature rise of the windings is 8 C ( F) or less measured by the resistance change method. (at rated voltage, at standstill, two phases energized) Stop Position Accuracy ± arc minutes (±. ) Shaft Runout. mm (. in.) T.I.R. Radial Play. mm (. in.) maximum of N (. lb.) Axial Play.7 mm (. in.) maximum of N (. lb.) Concentricity.7 mm (. in.) T.I.R. Perpendicularity.7 mm (. in.) T.I.R. This value is for full step under no load. (The value changes with the size of the load.) Radial Play: Displacement in shaft position in the radial direction, when a N (. lb.) load is applied in the vertical direction to the tip of the motor's shaft. Axial Play: Displacement in shaft position in the axial direction, when a N (. lb.) load is applied to the motor's shaft in the axial direction. T.I.R. (Total Indicator Reading): The total dial gauge reading when the measurement section is rotated one revolution centered on a reference axis center. Note: Do not measure insulation resistance or perform the dielectric strength test while the motor and driver are connected. ϕ.7 A. A.7 A C-6 ORIENTAL MOTOR GENERAL CATALOG 9/ Features C- / Product Line C- / System Configuration C-

6 Permissible Overhung Load and Permissible Thrust Load Model UMK A, UMK MA UMK A, UMK MA UMK A, UMK MA UMK6 A, UMK6 MA UMK66 A, UMK66 MA UMK68 A, UMK68 MA Enter A (single shaft) or B (double shaft) in the box ( ) within the model name. Dimensions Unit = mm (in.) Motor Standard Type, High-Resolution Type mm (.6 in.) Mass Model Motor Model L L kg (lb.) UMKAA PK-AA. (.6) UMKMAA PKMAA. (.) (.) UMKBA PK-BA. (.6) 8 (.89) UMKMBA PKMBA. (.) UMKAA PK-AA.7 (.9) UMKMAA PKMAA. (.66) 9 (.) UMKBA PK-BA.7 (.9) (.) UMKMBA PKMBA. (.66) UMKAA PK-AA. (.77) UMKMAA PKMAA.7 (.8) 7 (.8) UMKBA PK-BA. (.77) 6 (.) UMKMBA PKMBA.7 (.8) 6. mm (. in.) Model Motor Model L L UMK6AA UMK6MAA UMK6BA UMK6MBA UMK66AA UMK66MAA UMK66BA UMK66MBA UMK68AA UMK68MAA UMK68BA UMK68MBA PK6-A PK6MA PK6-B PK6MB PK66-A PK66MA PK66-B PK66MB PK68-A PK68MA PK68-B PK68MB Permissible Overhung Load Distance from Shaft End mm ( in.) mm (. in.) mm (.9 in.) mm (.9 in.) mm (.79 in.) (.) (.6) (7.6) (.7) (.) 67 () 89 () (9) 9 (.) (.) 76 (.99) (.7) 7 (.76) 9 (.6) Mass kg (lb.) DXF B8U B8U B8U DXF. (.99) B8.7 (.) B8 (.) B86 ϕ6.. 6± (.6±.) ±. (.9±.) (.. / ).8±. (.8±.6) ϕ. ± (.9±.) (.969. ).±. (.77±.6) L L ± (.79±.) ±. (.9±.) (.8) 6 Motor Leads mm ( in.) Length UL Style 6, AWG Permissible Thrust Load The permissible thrust load shall be no greater than the motor mass..±. (.77±.6) (.969. ) (.866.) ϕ. ϕ. The length of machining on the double shaft model is ±. (.9±.). L ± (.79±.) L (.).6 (.6) ±. (.9±.).8±. (.8±.6) ϕ6.. (.. / ) ϕ8.±. (.±.) 6 Motor Leads mm ( in.) Length UL Style 6, AWG (.6) Unit = N (lb.) ±. (.±.8) ±. (.±.8) (.6) No.- UNC. (.8) Deep 6. (.) 7.±. (.86±.) ϕ. (ϕ.77) Thru 7.±. (.86±.) 6. (.) AC Input DC Input AC Input DC Input Without Encoder With Encoder Controllers Stepping Motors Introduction AS ASC RK Full/Half UMK CRK RBK CMK PK/PV PK EMP SG8J Accessories Installation These dimensions are for the double shaft models. For the single shaft models, ignore the orange ( ) areas. Specifications, Characteristics C- / Dimensions C-7 / Connection and Operation C-8 / Motor and Combinations C- C-7

7 UDK9A, UDKA, UDKA Mass:.7 kg ( lb.) B87 (.9) (.9) (.9) 8 (.) (.77) (.9) (.) M Upper Bottom Line Symmetry Mounting Bracket A ( pieces, included) ±. (.9±.) (.9) (.9) ϕ. (ϕ.8) Countersink Slits 7. (.69) (.9) (.) M Terminal Block Cover 8 (.7) max. (.8) max. (.8) 7.6 (.) 6. (.) 7 M (.9) 7. (.) (.8) Mounting Bracket B ( pieces, included) 7. (.). (.8) (.8) ±. (.787±.) ±. (.787±.). (.8) (.8) 8 (.) 7 (.76) (.9) (.) (.8) ϕ. (ϕ.8) Countersink ±. (.9±.) Connection and Operation Names and Functions of Parts Signal Monitor Displays Indication Color Function POWER Green Power input display CW/PLS Green Pulse/CW pulse input display CCW/DIR. Green Rotation direction/ccw pulse input display C. Green All windings off input display TIMING Green Excitation timing output display O.H. Red Overheat output display Current Adjustment Switches Indication Switch Name Condition RUN Motor Run Current Switch For adjusting the motor running current. STOP Motor Stop Current Switch For adjusting the motor current at standstill. Motor Terminals Power Input Terminals Function Select Switches Indication Switch Name Function /ACD /ACO F/H P/P N.O./N.C. Automatic current cutback function switch Automatic current off function switch Step angle select switch Pulse input mode switch Overheat output logic switch Input/Output Signals Input/Output Signal Name Function CW pulse signal (Pulse signal) Operation command pulse signal (The motor will rotate in the CW direction when in -pulse input mode.) Input CCW pulse signal (Rotation direction signal) All windings off signal Rotation direction signal, Photocoupler : CCW; Photocoupler : CW (The motor will rotate in the CCW direction when in -pulse input mode.) Cuts the output current to the motor and allows the motor shafts to be rotated by external force. Excitation timing signal Outputs signals when the excitation sequence is at STEP "." Output Overheat signal When the temperature of the driver heat sink rises above 9 C (9 F), this signal will be output. Description of input/output signals Page C- Automatically decreases output current to motor at motor standstill. When the temperature of the driver heat sink rises above 9 C (9 F), this function automatically switches the motor current off. The function can be set and released with this switch. Switches the motor's step angle. Standard type F:.8 /step, H:.9 /step High-resolution type F:.9 /step, H:. /step Switches between -pulse input and -pulse input. Select overheat alarm logic. N.O.: Normally open N.C.: Normally closed Use according to your equipment. C-8 ORIENTAL MOTOR GENERAL CATALOG 9/ Features C- / Product Line C- / System Configuration C-

8 Connection Diagram V V V Controller V(+ V) V(+ V) V Twisted-Pair Wire Pulse Signal (CW Pulse Signal) R Rotation Direction Signal (CCW Pulse Signal) R All Windings Off Signal R R Excitation Timing Signal R Overheat Signal Single-Phase VAC±% 6 Hz or Single-Phase VAC±% /6 Hz +CW/PLS CW/PLS +CCW/DIR. CCW/DIR. +C. C. +TIMING +O.HEAT COM ACV/V ACV/V FG Ground (Use wire of AWG8 or thicker.) Input Signals Output Signals YELLOW /WHITE BLACK RED GREEN BLUE Motor Leads Yellow White Black Red Green Input Signal Connection Signals can be connected directly when VDC is supplied. If the signals are used at a voltage exceeding VDC, be sure to provide an external resistor to prevent the current exceeding ma from flowing. Internal components will be damaged if a voltage exceeding VDC is supplied directly without using an external resistor. Example: If the voltage is VDC, connect a resistor (R) of. to. kω and. W or more. Output Signal Connection Use output signals at VDC or less and ma or less. If these specifications are exceeded, the internal components may be damaged. Check the specification of the connected equipment. When the current is above ma, connect an external resistor R. Power Supply Use a power supply that can supply sufficient input current. When power supply capacity is insufficient, a decrease in motor output can cause the following malfunctions: Motor does not operate properly at high-speed. Slow motor startup and stopping Blue Stepping Motor Notes on Wiring Use twisted-pair wires of AWG or thicker and keep wiring as short as possible [within m (6.6 ft.)]. Note that as the length of the pulse signal line increases, the maximum transmission frequency decreases. Technical reference Page F- Use wires of AWG or thicker for motor line (when extended) and power supply lines, and use wire of AWG8 or thicker for protective earth line. To ground the driver and controller, lead the ground conductor form the protective earth terminal and connect the ground conductor to provide a common ground point. Provide a minimum distance of cm (.9 in.) between the signal lines and power lines (AC lines, motor lines and other large-current circuits). Do not run the signal lines in the same duct as power lines or bundle them with power lines. Recommended Crimp Terminals 6. (.) max.. (.) min. 9 (.) min. 6. (.) max. Unit = mm (in.). (.) min. 9 (.) min. Crimp terminals are not provided with the products. They must be purchased separately. AC Input DC Input AC Input DC Input Without Encoder With Encoder Controllers Stepping Motors Introduction AS ASC RK Full/Half UMK CRK RBK CMK PK/PV PK EMP SG8J Accessories Installation Specifications, Characteristics C- / Dimensions C-7 / Connection and Operation C-8 / Motor and Combinations C- C-9

9 Description of Input/Output Signals Indication of Input/Output Signal """" Input (output) "" indicates that the current is sent into the photocoupler (transistor) inside the driver. Input (output) "" indicates that the current is not sent into the photocoupler (transistor) inside the driver. The input/output remains "" if nothing is connected. Photocoupler Pulse (CW) and Rotation Direction (CCW) Input Signal All Windings Off (C.) Input Signal Input Circuit and Sample Connection Controller Open-Collector Output R VO V + Ω 7 ma Pulse (CW) and Rotation Direction (CCW) Input Signal Pulse Waveform Characteristics -Pulse Input Mode Pulse 9% % μs min. μs min. μs μs min. min. All Windings Off (C.) Input Signal Inputting this signal puts the motor in a non-excitation (free) state. This signal is used when moving the motor by external force or manual home position is desired. The photocoupler must be "" when operating the motor. All Windings Off Signal Motor Current Motor Holding Torque Release The shaded area indicates that the motor provides holding torque in proportion to standstill current set by STOP switch. Switching the "All Windings Off" (C.) signal from "photocoupler " to "photocoupler " does not alter the excitation sequence. When the motor shaft is manually adjusted with the "All Windings Off" signal input, the shaft will shift up to ±.6 from the position set after the "All Windings Off" signal is released. Excitation Timing (TIMING) Output Signal Overheat (O.HEAT) Output Signal Output Circuit and Sample Connection Controller Rotation Direction -Pulse Input Mode CW Pulse CCW Pulse μs max. μs max. 9% % μs μs CCW min. min. μs max. μs max. μs min. CW Pulse duty: % and below The shaded area indicates that the photocoupler diode is. The motor moves when the photocoupler state changes from to. The minimum interval time when changing rotation direction is μs. This value varies greatly depending on the motor type and load inertia. Pulse Signal Characteristics Keep the "Pulse" signal at the "photocoupler " state when no pulses are being input. In -pulse input mode, leave the pulse signal at rest ("photocoupler ") when changing rotation directions. In -pulse input mode, do not input a CW pulse and CCW pulse simultaneously. VO R V + ma max. Excitation Timing (TIMING) Output Signal The "Excitation Timing" signal is output when the motor excitation is in the initial stage (step ""). The "Excitation Timing" signal is output simultaneously with a pulse input each time the excitation sequence returns to step "." The excitation sequence will complete one cycle for every 7. rotation of the motor output shaft. Full step: Signal is output once every pulses. Half step: Signal is output once every 8 pulses. The TIMING LED lights on the front panel when the "Excitation Timing" signal is output. Timing chart at.8 /step (full step) When connected as shown in the sample connection, the signal will be "photocoupler " at step "." Pulse Input Signal Rotation Direction Input Signal Excitation Timing Output Signal CW CCW (Step) Note: When power is turned on, the excitation sequence is reset to step "" and the "Excitation Timing" signal will be output. C- ORIENTAL MOTOR GENERAL CATALOG 9/ Features C- / Product Line C- / System Configuration C-

10 Overheat (O.HEAT) Output Signal The "Overheat" signal is output to protect the driver from heat damage if the internal temperature of the driver heat sink rises above 9 C (9 F). The O.H. LED lights on the front panel when the "Overheat" signal is output. When used as shown in the sample connection with the overheat output logic switch set to "N.O.", the signal becomes "photocoupler." (Switch to "N.C." to set to the "photocoupler.") You can select whether to stop the motor or continue the operation when an "Overheat" signal is output. If the automatic current off function switch is set to ACO position, output current is cut off to stop the motor when the "Overheat" signal is output. Pulse Input Overheat Output O.H.LED Timing Chart Motor Run Light Stop (No holding power) List of Motor and Combinations Model names for motor and driver combinations are shown below. Standard Type Model Motor Model Model UMK A PK- A UDK9A High-Resolution Motor Power Input -Pulse Input Mode Pulse Input Signal Rotation Direction Input Signal -Pulse Input Mode CW Pulse Input Signal CCW Pulse Input Signal All Windings Off Input Signal CW CCW UMK A UMK A UMK6 A UMK66 A UMK68 A PK- A PK- A PK6- PK66- PK68- UDKA UDKA UMKM A PKM A UDK9A UMKM A UMKM A UMK6M A UMK66M A UMK68M A. s min. μs min. μs min. PKM A PKM A PK6M PK66M PK68M Enter A (single shaft) or B (double shaft) in the box ( ) within the model name. μs min. UDKA UDKA If the automatic current off function switch is set to "" position, the motor continues operation when the "Overheat" signal is output. Pulse Input Overheat Output O.H.LED Motor Continuous Operation To clear the "Overheat" signal, first resolve the cause and check for safety, then turn power on again. s min. μs min. The minimum switching time to change direction (-pulse input mode), and switching time to change CW, CCW pulse (-pulse input mode) μs is shown as a response time of circuit. The motor may need more time than that. Depends on load inertia, load torque and starting frequency. Never input a pulse signal immediately after switching the "All Windings Off" signal to the "photocoupler " state. The motor may not start. Wait at least five seconds before turning on the power again. Light AC Input DC Input AC Input DC Input Without Encoder With Encoder Controllers Stepping Motors Introduction AS ASC RK Full/Half UMK CRK RBK CMK PK/PV PK EMP SG8J Accessories Installation Specifications, Characteristics C- / Dimensions C-7 / Connection and Operation C-8 / Motor and Combinations C- C-

11 C- ORIENTAL MOTOR GENERAL CATALOG 9/