Oriental motor RBK Series User manual

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.
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 Combinations of motors and
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 overhung load and
permissible thrust load ................. 14
5.5 Installing the driver ....................... 14
5.6 Installing and wiring in compliance
with EMC Directive....................... 18
6 Connection................................. 21
6.1 Connection example .................... 21
6.2 Connecting the power supply ....... 24
6.3 Connecting and grounding
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 Third harmonic waveform
correction function........................ 37
7.4 Step angle .................................... 38
7.5 Motor current................................ 38
8 Protective functions.....................40
8.1 Descriptions of protective functions
and numbers of LED blinks .......... 40
8.2 How to clear a protective
function ........................................ 40
9 Inspection....................................41
10 Troubleshooting and remedial
actions ........................................42

1 Introduction
!2!
1 Introduction
!"
Before use
The product described in this manual has been designed and manufactured for use in
general industrial machinery, and must not be used for any other purpose. For the
driver’s power supply, use a DC power supply with reinforced insulation on its
primary and secondary sides. Oriental Motor Co., Ltd. is not responsible for any
damage caused through failure to observe this warning.
!"
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.
!"
Standards and CE Marking
This product is recognized by UL and certified by CSA, and bears the CE Marking
(Low Voltage Directive, EMC Directive) in compliance with the EN Standards.
!" Applicable Standards
Applicable
Standards
Certification
Body
Standard
File No. CE Marking
UL 1004, UL 2111
CSA C22.2 No.77
CSA C22.2 No.100
UL E64199
Motor
EN 60034-1
EN 60034-5
EN 60950
IEC 60664-1
! !
Low Voltage
Directive,
EMC Directive
UL 508C#
CSA C22.2 No.14 UL E171462
Driver
EN 50178 ! !
Low Voltage
Directive,
EMC Directive
#" For UL Standard (UL 508C), the product is recognized for the condition of Maximum
Surrounding Air Temperature 40 °C (104 °F).
!" The names of products certified to conform with relevant standards are
represented by applicable unit model motor and driver part numbers.
!" For unit models, Oriental Motor declares conformance with the EMC Directive
individually.

1 Introduction
!3!
!" 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# 400 × 400 (15.75 × 15.75)
Motor
PK29# 200 × 200 (7.87 × 7.87) 10 (0.39)
Driver RBD# 200 × 100 (7.87 × 3.94) 2 (0.08)
!" Installation conditions (EN Standard)
Motor and driver are to be used as a component within other equipment.
Overvoltage category: II
Pollution degree: Class 3
Protection against electric shock: Class I
!"
Compliance with the EC Directives
!" For Low Voltage Directive
This product is designed for use as a built-in component.
!" Install the product within an enclosure in order to avoid contact with the hands.
!" Be sure to maintain a Protective Earth in case the hands should make contact with
the product. Securely ground the Protective Earth Terminals of the motor and
driver.
!" For EMC Directive (89/336/EEC, 92/31/EEC)
This product has received EMC measures under the conditions specified in
“Example of motor and driver installation and wiring” on page 20.
Be sure to conduct EMC measures with the product assembled in your equipment by
referring to 5.6 “Installing and wiring in compliance with EMC Directive” on page
18.
!"
Hazardous substances
RoHS (Directive 2002/95/EC 27Jan.2003) compliant

2 Safety precautions
!4!
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.
Warning
Handling the product without observing the instructions that
accompany a “Warning” symbol may result in serious injury or
death.
Caution
Handling the product without observing the instructions that
accompany a “Caution” symbol may result in injury or property
damage.
Note
Note
The items under this heading contain important handling
instructions that the user should observe to ensure safe use
of the product.
Warning
General
!" Do not use the product in explosive or corrosive environments, in the presence of
flammable gases, locations subjected to splashing water, or near combustibles.
Doing so may result in fire, electric shock or injury.
!" Assign qualified personnel the task of installing, wiring, operating/controlling,
inspecting and troubleshooting the product. Failure to do so may result in fire,
electric shock or injury.
!" Do not transport, install the product, perform connections or inspections when the
power is on. Always turn the power off before carrying out these operations.
Failure to do so may result in electric shock.
!" The terminals on the driver’s front panel marked with symbol indicate
the presence of high voltage. Do not touch these terminals while the power is on
to avoid the risk of fire or electric shock.
!" Provide a means to hold the moving parts in place for applications involving
vertical travel. The motor loses holding torque when the power is shut off,
allowing the moving parts to fall and possibly cause injury or damage to
equipment.
!" When the driver’s protective function is triggered, shut off the power immediately.
Turn the power back on only after determining the cause. Continuing the
operation without determining the cause of the problem may cause malfunction of
the motor, leading to injury or damage to equipment.

2 Safety precautions
!5!
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.
Connection
!" Keep the driver’s input power voltage within the specified range to avoid electric
shock or fire.
!" For the driver’s power supply use a DC power supply with reinforced insulation
on its primary and secondary sides. Failure to do so may result in electric shock.
!" Connect the cables securely according to the wiring diagram in order to prevent
electric shock or fire.
!" Do not forcibly bend, pull or pinch the power cable and motor cable. Doing so
may result in electric shock or fire.
!" Do not touch the connection terminals of the driver immediately after the power is
turned off. To avoid electric shock of the residual voltage, wait more than
5 seconds after Power LED is off.
Operation
!" Turn off the driver power in the event of a power failure, or the motor may
suddenly start when the power is restored and may cause injury or damage to
equipment.
!" Do not turn the AWO (all windings off) input to “ON” while the motor is
operating. The motor will stop and lose its holding ability, which may result in
injury or damage to equipment.
Repair, disassembly and modification
!" Do not disassemble or modify the motor or driver. This may cause electric shock
or injury. Refer all such internal inspections and repairs to the branch or sales
office from which you purchased the product.
Caution
General
!" Do not use the motor and driver beyond their specifications, or electric shock,
injury or damage to equipment may result.
!" Keep your fingers and objects out of the openings in the motor and driver, or fire,
electric shock or injury may result.
!" Do not touch the motor or driver during operation or immediately after stopping.
The surfaces are hot and may cause a burn.
Transportation
!" Do not hold the motor output shaft or motor cable. This may cause injury.

2 Safety precautions
!6!
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.
!" Provide a cover over the rotating parts (output shaft) of the motor to prevent
injury.
Operation
!" Use a motor and driver only in the specified combination. An incorrect
combination may cause a fire.
!" Provide an emergency-stop device or emergency-stop circuit external to the
equipment so that the entire equipment will operate safely in the event of a system
failure or malfunction. Failure to do so may result in injury.
!" Before supplying power to the driver, turn all control inputs to the driver to
“OFF.” Otherwise, the motor may start suddenly and cause injury or damage to
equipment.
!" To prevent bodily injury, do not touch the rotating parts (output shaft) of the motor
during operation.
!" Before moving the motor directly (as in the case of manual positioning), confirm
that the driver AWO (all windings off) input is “ON” to prevent injury.
!" Immediately when trouble has occurred, stop running and turn off the driver
power. Failure to do so may result in fire or injury.
!" To prevent electric shock, use only an insulated precision screwdriver to adjust the
driver switches.
!" The motor’s surface temperature may exceed 70 °C (158 °F),
even under normal operating conditions. If a motor is accessible
during operation, post the warning label shown in the figure in a
conspicuous position to prevent the risk of burns.
Warning
label
Maintenance and inspection
!" To prevent the risk of electric shock, do not touch the terminals while measuring
the insulation resistance or conducting a voltage-resistance test.
Disposal
!" To dispose of the motor or driver, disassemble it into parts and components as
much as possible and dispose of individual parts/components as industrial waste.

3 Precautions for use
!7!
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. See page 36 for details on the switches.
!" Conduct the insulation resistance measurement or withstand voltage
test separately on the motor and the driver.
Conducting the insulation resistance measurement or withstand voltage test with the
motor and driver connected may result in injury or damage to equipment.
!" Do not apply an overhung load and thrust load in excess of the
specified permissible limit.
Be sure to operate the motor within the specified permissible limit of overhung load
and thrust load. Operating it under an excessive overhung load and thrust load may
damage the motor bearings (ball bearings). See page 14 for details.
!" Operate the motor with a surface temperature not exceeding 100 °C
(212 °F).
The motor casing’s surface temperature may exceed 100 °C (212 °F) under certain
conditions (ambient temperature, operating speed, duty cycle, etc.). Keeping the
surface temperature of the motor casing below 100 °C (212 °F) will also maximize
the life of the motor bearings (ball bearings).
!" About maximum static torque at excitation
Maximum static torque at excitation represents a value obtained when the motor is
excited using the rated current. When the motor is combined with a dedicated driver,
the maximum static torque at excitation drops to approximately 50% (factory
setting) due to the current cutback function that suppresses the rise in motor
temperature in a standstill state. Acceleration and operation at the maximum static
torque at excitation is possible in start-up, but it only has approximately 50%
holding power after it has stopped. When selecting a motor for your application,
consider the fact that the holding power will be reduced to approximately 50% after
the motor has stopped.
!" Preventing electrical noise
See 5.6 “Installing and wiring in compliance with EMC Directive” on page 18 for
measures with regard to noise.
!" Check the terminal block numbers of the motor, and connect them
correctly and securely.
Wrong connection of leads or poor contact may damage the driver.

4 Preparation
!8!
!" 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.
4 Preparation
This section covers the points to be checked along with the names and functions of
the respective parts.
4.1 Checking the product
Upon opening the package, verify that the items listed below are included.
Report any missing or damaged items to the branch or sales office from which you
purchased the product. See 4.2 “Combinations of motors and drivers” below for the
motor and driver combinations.
!" Motor............................................................ 1 unit
!" Driver ........................................................... 1 unit
!" Operating manual (this manual) ................... 1 copy
Note When removing the driver from the conductive protection bag, make sure
your hands are not charged with static electricity. This is to prevent
damage to the driver due to static electricity.
4.2 Combinations of motors and drivers
Unit model Motor model Driver model
RBK264T PK264D1T
RBK266T PK266D1T
RBK268T PK268D1T
RBD242A-V
RBK296T PK296DT
RBK299T PK299DT
RBK2913T PK2913DT
RBD245A-V

4 Preparation
!9!
4.3 Names and functions of parts
This section covers the names and functions of parts in the motor and driver.
!" Motor
Cable clamp
Terminal box
Mounting holes
(four locations)
Output shaft
Pilot
External Protective
Earth Terminal
!" Terminals of motor (View with the terminal block removed)
Internal Protective
Earth Terminal
Terminal block
O-ring
•RBK26!•RBK29!

4 Preparation
!10!
!" Driver
1
9
10
11
12
13
2
3
6
8
7
4
5
No. Name Description
1 POWER LED (green) Lit when the power is on.
2 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.
3 I/O signals connector (CN1) Connect to I/O signals.
4 Motor terminal Connect to motor.
5 Power supply terminal Connect to power supply.
6 Protective Earth Terminal Make ground connection by installing a
grounding wire of AWG18 (0.75 mm2) or larger.
7 Motor operating current
setting switch (RUN)
Set the operating current of the motor.
8 Step angle setting switch
(DATA)
Select a desired motor step angle from among
the 16 preset levels.
9 Third harmonic waveform
correction function (SW1)
This function sets a correction value to be
applied to motor drive current waveforms.
10 Smooth drive function switch
(SW2-1)
This function lets you reduce vibration and
noise during low-speed operation.
11 Anti-resonance function
(SW2-2)
This function reduces vibration during
medium-speed operation.
12 SW2-3 Not used. (Keep this switch in the OFF
position.)
13 Motor standstill current setting
switch (SW2-4)
Set the current when the motor is at a standstill.