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2-Phase Stepping Motor Unit!
RBK Series
OPERATING MANUAL
Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures and safety precautions.
!"
Please read it thoroughly to ensure safe operation.
!"
Always keep the manual where it is readily available.
Table of contents
1 Introduction .................................. 2
2 Safety precautions ....................... 4
3 Precautions for use ...................... 7
4 Preparation................................... 8
4.1
Checking the product ..................... 8
4.2
drivers ............................................ 8
4.3
Names and functions of parts......... 9
5 Installation ...................................11
5.1
Location for installation................. 11
5.2
Installing the motor ....................... 12
5.3
Installing a load ............................ 13
5.4
permissible thrust load ................. 14
5.5
Installing the driver ....................... 14
5.6
with EMC Directive....................... 18
6 Connection ................................. 21
6.1
Connection example .................... 21
6.2
Connecting the power supply ....... 24
6.3
the motor ...................................... 25
6.4
Grounding the driver .................... 29
6.5
Connecting the I/O signals ........... 30
6.6
About input/output signals ............ 31
6.7
Timing chart.................................. 35
7 Settings .......................................36
7.1
Smooth drive function................... 36
7.2
Anti-resonance function................ 37
7.3
correction function........................ 37
7.4
Step angle .................................... 38
7.5
Motor current................................ 38
8 Protective functions.....................40
8.1
and numbers of LED blinks .......... 40
8.2
function ........................................ 40
9 Inspection....................................41
actions ........................................42
HP-7445-4
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Summary of Contents for Oriental motor RBK Series
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Page 1: Table Of Contents
HP-7445-4 2-Phase Stepping Motor Unit! RBK Series OPERATING MANUAL Thank you for purchasing an Oriental Motor product. This Operating Manual describes product handling procedures and safety precautions. !" Please read it thoroughly to ensure safe operation. !" Always keep the manual where it is readily available. -
Page 2: Introduction
!" Overview of the product The RBK series is a unit product consisting of an encased microstep driver with built-in smooth drive function, and a 2-phase stepping motor of high torque design. !"... - Page 3 1 Introduction !" The temperature-rise test, as required by the UL Standards, is conducted with the aluminum heat sink attached. The size and thickness of the heat sink are as described below. Size [mm (in.)] Thickness [mm (in.)] PK26# Motor 400 ×...
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Page 4: Safety Precautions
2 Safety precautions 2 Safety precautions The precautions described below are intended to prevent danger or injury to the user and other personnel through safe, correct use of the product. Use the product only after carefully reading and fully understanding these instructions. Handling the product without observing the instructions that accompany a “Warning”... - Page 5 2 Safety precautions Installation !" To prevent the risk of electric shock, use the motor and driver for class I equipment only. !" Install the motor and driver in their enclosures in order to prevent electric shock or injury. !" Install the motor and driver so as to avoid contact with hands, or ground them to prevent the risk of electric shock.
- Page 6 2 Safety precautions Installation !" Keep the area around the motor and driver free of combustible materials in order to prevent fire or a burn. !" To prevent the risk of damage to equipment, leave nothing around the motor and driver that would obstruct ventilation.
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Page 7: Precautions For Use
3 Precautions for use 3 Precautions for use This section covers limitations and requirements the user should consider when using the RBK series. !" Do not operate the driver internal switches other than the SW1, SW2, RUN and DATA. Changing the switch settings may cause a product malfunction or cause damage to the product. -
Page 8: Preparation
4 Preparation !" Regeneration When a large inertial load is operated at high speed, regenerative energy will generate and increase the power supply voltage, causing the protective function to be triggered. Review the operating condition and make sure an excessive regenerative voltage will not be generated. -
Page 9: Names And Functions Of Parts
4 Preparation 4.3 Names and functions of parts This section covers the names and functions of parts in the motor and driver. !" Motor Cable clamp Mounting holes External Protective (four locations) Earth Terminal Output shaft Terminal box Pilot !" Terminals of motor (View with the terminal block removed) •... - Page 10 4 Preparation !" Driver Name Description POWER LED (green) Lit when the power is on. ALARM LED (red) This LED blinks when the protective function was triggered and the ALARM output has turned OFF as a result. The triggered protective function can be checked by counting the number of times the LED blinks.
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Page 11: Installation
5 Installation 5 Installation This chapter explains the installation location and installation methods of the motor and driver, as well as how to install a load. The installation and wiring methods in compliance with the EMC Directive are also explained. 5.1 Location for installation The motor and driver are designed and manufactured for installation in equipment. -
Page 12: Installing The Motor
5 Installation 5.2 Installing the motor !" Installation direction The motor can be installed in any direction. !" Installation method Install the motor onto an appropriate flat metal plate having excellent vibration resistance and heat conductivity. When installing the motor, secure it with four bolts (not supplied) through the four mounting holes provided. -
Page 13: Installing A Load
5 Installation 5.3 Installing a load When connecting a load to the motor, align the centers of the motor’s output shaft and load shaft. Also, keep the overhang load and thrust load under the permissible values. !" Using a coupling Align the centers of the motor’s output shaft and load shaft in a straight line. -
Page 14: Permissible Overhung Load And Permissible Thrust Load
5 Installation 5.4 Permissible overhung load and permissible thrust load The overhung load and the thrust load on the motor’s output shaft must be kept under the permissible values listed below. Failure due to fatigue may occur when the motor bearings and output Note shaft are subject to repeated loading by an overhung or thrust load that is in excess of the permissible limit. - Page 15 5 Installation !" Installation method Install the driver on a flat metal plate having excellent vibration resistance and heat conductivity. If the driver’s input power-supply voltage is 48 V or below, the driver can be installed onto a DIN rail using an optional DIN rail mounting plate (sold separately). If vibration is noticeable, however, do not install the driver onto a DIN rail, but install it directly onto a metal plate using the mounting holes provided in the driver.
- Page 16 5 Installation !" Mounting to DIN rail Use a DIN rail 35 mm (1.38 in.) wide to mount the driver. If the driver’s input power-supply voltage exceeds 48 V, do not install the Note driver onto a DIN rail. Sufficient heat dissipation cannot be achieved and the driver’s overheat protection function may be triggered as a result.
- Page 17 5 Installation Secure the driver with end plate. End plate Do not use the mounting holes (M3, three locations) for the DIN rail Note !" mounting plate provided in the back of the driver for any purpose other than securing the DIN rail mounting plate. Be sure to use the supplied screws when securing the DIN rail mounting !"...
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Page 18: Installing And Wiring In Compliance With Emc Directive
Failure to do so may result in serious impairment of the machine’s functionality. The use of the following installation and wiring methods will enable the RBK series motor and/or driver to be compliant with the EMC Directive. Oriental Motor conducts EMC measurements its RBK series motors and drivers in accordance with “Example of motor and driver installation and wiring”... - Page 19 5 Installation !" Grounding method When grounding the driver and mains filter, use a cable of the largest possible size and connect to the ground point over the shortest distance so that no potential difference will be generated at the grounded position. The ground point must be a large, thick and uniform conductive surface.
- Page 20 5 Installation !" Example of motor and driver installation and wiring Motor User Driver Controller Motor cable Cable [2 m (6.6 ft.)] clamp (Shielded cable) I/O cable Cable Cable [2 m (6.6 ft.)] clamp clamp (Shielded cable) Mains DC power filter supply Power supply cable...
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Page 21: Connection
6 Connection 6 Connection This section covers the methods and examples of connecting and grounding the driver, motor, power and controller, as well as the input/output signals. 6.1 Connection example Either 5 or 24 VDC can be used as the signal voltage for the PLS input, and DIR input. - Page 22 6 Connection !" 5 VDC or line driver input: Driver 20 to 75 VDC VDC+ Motor lead wires Controller PNP type Controller NPN type (5 VDC) (5 VDC) PLS+ PLS- Photocoupler input 5 VDC DIR+ Input current 5 to 20 mA DIR- Photocoupler input 5 VDC...
- Page 23 6 Connection !" 24 VDC: Driver 20 to 75 VDC VDC+ Motor lead wires Controller NPN type Controller PNP type (24 VDC) (24 VDC) 2.7 k PLS24+ Photocoupler input PLS- 24 VDC Input current 5 to 20 mA 2.7 k DIR24+ DIR- Photocoupler input...
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Page 24: Connecting The Power Supply
6 Connection 6.2 Connecting the power supply For the driver’s power supply use a DC power supply with reinforced insulation on its primary and secondary sides. Failure to Warning do so may result in electric shock. Connecting the power supply to the driver’s power supply terminal. Use a power supply that can supply the following current capacity. -
Page 25: Connecting And Grounding The Motor
6 Connection Recommended driver power supply circuit Bridge rectifier 10 A or more Reinforced-insulation type transformer 1 Capacitor 2 Bleed resistor 22 k 1 W Driver model Transformer capacity (#1) Capacitor capacity (#2) RBD242A-V 400 VA 4700 µF RBD245A-V 6.3 Connecting and grounding the motor Pin assignments of motor terminal Signal Terminal block... - Page 26 6 Connection Remove the cable clamp cap and 40 to 50 mm gasket, and guide the cable into the (1.57 to 1.97 in.) terminal block cover. 6 mm (0.24 in.) Strip the cable sheath by 40 to 50 mm (1.57 to 1.97 in.) from the end, strip the lead wire sheath by 6 mm.
- Page 27 6 Connection !" Connecting the RBK29# Use a multi-core cable [outer diameter: 7 to 13 mm (0.28 to 0.51 in.)] of AWG22 to 16 (0.3 to 1.25 mm ) and round terminal for connection with the motor. Loosen the 4 terminal block cover screws (M3) and remove the terminal block cover from the motor.
- Page 28 6 Connection Insert the gasket into the receptacle, confirm that the sheath of the multi-core cable is securely sealed with the gasket, and then tighten the cap. Tightening torque: 4 to 5 N·m (560 to 710 oz-in) Adjust the tightening torque depending on the diameter and material of the cable.
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Page 29: Grounding The Driver
6 Connection 6.4 Grounding the driver Be sure to ground the Protective Earth Terminal (screw size: M4) of the driver. Use a grounding wire of AWG18 (0.75 mm ) or more in diameter, and ground the cable near the driver with a round terminal. Do not share the grounding wire with a welder or power equipment. -
Page 30: Connecting The I/O Signals
6 Connection 6.5 Connecting the I/O signals Connecting the I/O signals to the driver’s CN1. Keep the wiring distance as short as possible [less than 2 m (6.6 ft.)] to suppress the effect of noise. Separate I/O signals cable at least 100 mm (3.94 in.) from electromagnetic Note relays and other than inductance loads. -
Page 31: About Input/Output Signals
6 Connection 6.6 About input/output signals !" Input signals The signal state represents the “ON: Carrying current” or “OFF: Not carrying current” state of the internal photocoupler. • Example of connection with a • Example of connection with a current sink output circuit current source output circuit 5 VDC, 24 VDC 5 VDC, 24 VDC... - Page 32 6 Connection 24 VDC The controller pulses are connected to the PLS24+ input (pin No.2) or the PLS! input (pin No.9), and the rotation direction is connected to the DIR24+ input (pin No.10) or DIR! input (pin No.11). !" When the DIR input is ON, a fall of the PLS input from ON to OFF will rotate the motor one step in the CW direction.
- Page 33 6 Connection !" AWO (all windings off) input Use the signal only when the motor’s output shaft must be rotated manually for position adjustment (ON: 4.5 to 26.4 V, OFF: 0 to 1 V.) !" When the AWO input is turned ON, the driver stops supplying current to the motor and the motor’s holding torque is lost.
- Page 34 6 Connection !" TIM (excitation timing) output When the motor-excitation state (combined phases of current flowing) is in the excitation home position (step [0]), the driver switches on the timing output. The motor-excitation state is reset to the excitation home position when the power supply is switched on.
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Page 35: Timing Chart
6 Connection 6.7 Timing chart Motor operation 5 s or more Power source input 0.5 s or more 10 µs or more 300 µs or more PLS input DIR input AWO input 300 µs or more CS input Basic step angle DATA 0.5 s or less 0.4 s or less... -
Page 36: Settings
7 Settings 7 Settings This chapter explains how to set the driver functions. Third harmonic waveform correction function switch (SW1) Smooth drive function switch (SW2-1) Anti-resonance function switch (SW2-2) Not used (SW2-3) Motor standstill current setting switch (SW2-4) ∗ Motor operating current setting switch (RUN) Step angle setting switch (DATA) Do not operate the driver internal switches other... -
Page 37: Anti-Resonance Function
7 Settings 7.2 Anti-resonance function This function reduces vibration during medium-speed operation. Use an insulated precision screwdriver to change the ON/OFF position of the anti-resonance function switch (SW2-2). Factory setting: OFF (used) !" When the anti-resonance function is not used, set the anti-resonance function switch to “ON.”... -
Page 38: Step Angle
7 Settings 7.4 Step angle Select a desired motor step angle from among the 16 preset levels. Use an insulated precision screwdriver to change the dial of the step angle setting switch (DATA). The step angle is calculated by dividing the base step angle of the motor by the number of divisions. - Page 39 7 Settings !" Operating current A desired operating current can be set via selection from among the 16 preset levels. Use an insulated precision screwdriver to change the dial of the motor operating current setting switch (RUN). Factory setting: RBD242# E (motor’s rated current) RBD245# F (motor’s rated current) Dial Operating current (A/phase)
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Page 40: Protective Functions
8 Protective functions 8 Protective functions This section covers the driver-protection functions and methods used to clear the triggered function. 8.1 Descriptions of protective functions and numbers of LED blinks The driver is provided with functions that protect the driver from overheat, overvoltage and overcurrent. -
Page 41: Inspection
9 Inspection 9 Inspection It is recommended that periodic inspections be conducted for the items listed below after each operation of the motor. If an abnormal condition is noted, stop the use and contact your nearest office. Inspection items !" Are the motor installation screws loose? !"... -
Page 42: Troubleshooting And Remedial Actions
10 Troubleshooting and remedial actions 10 Troubleshooting and remedial actions During motor operation, the motor or driver may fail to function properly due to an improper speed setting or wiring. When the motor cannot be operated correctly, refer to the contents provided in this section and take appropriate action. If the problem persists, contact your nearest office. - Page 43 10 Troubleshooting and remedial actions Phenomenon Possible cause Remedial action Loss of The centers of the motor’s Check the connection synchronization output shaft and load shaft are condition of the motor output during acceleration or not aligned. shaft and load shaft. running.
- Page 44 10 Troubleshooting and remedial actions Phenomenon Possible cause Remedial action Motor vibration too The centers of the motor’s Check the connection great. output shaft and load shaft are condition of the motor output not aligned. shaft and load shaft. Motor resonating If the vibration decreases when the operating pulse speed is changed, it means...
- Page 48 If a new copy is required to replace an original manual that has been damaged or lost, please contact your nearest Oriental Motor branch or sales office. !" Oriental Motor shall not be liable whatsoever for any problems relating to industrial property rights arising from use of any information, circuit, equipment or device provided or referenced in this manual.
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