Oriental motor PK Series User manual

Introduction
Before use
This product must be handled by qualied personnel with
expert knowledge of electrical and mechanical engineering.
Use the product correctly after thoroughly reading the section
“Safety precautions.”
This product is designed for use as an internal component for
general industrial equipment. Do not use the product for any
other purpose. Oriental Motor shall not be liable whatsoever for
any damage arising from the failure to observe this warning.
Product overview
This product is a 2-phase stepping motor employing a terminal-
block connection method.
This product is recognized by UL and certied by CSA, and
bears the CE Marking (Low Voltage Directive) in compliance
with the EN Standards.
Applicable Standards Certication Body Standards File No.
UL 1004-1, UL 1004-2
CSA C22.2 No.100
CSA C22.2 No.77
UL E64199
EN 60950-1, EN 60034-1
EN 60034-5, EN 60664-1
Conforming to the respective
standards.
Degree of
protection
IP65 (Excluding the gap between the shaft and the
ange)
Operating
environment
Ambient
temperature
−10 to +50 °C (+14 to +122 °F)
(non-freezing)
Humidity 85% or less (non-condensing)
Altitude Up to 1,000 m (3,300 ft.) above sea
level
Ambient
atmosphere Free from corrosive gases
Installation
conditions
Built-in component
Overvoltage category: II
Pollution degree: Class 3 (excluding installation
surface)
Protection against electric shock: Class Iequipment
The user is responsible for conrming the EMC compatibility of
the nal equipment incorporating the motor.
Hazardous substances
The products do not contain the substances exceeding the
restriction values of RoHS Directive (2011/65/EU).
Checking the product
Open the package and conrm that all of the following items
are available. Should you nd any item missing or damaged,
contact the Oriental Motor sales oce where you purchased
the product. Check the model of the motor against the model
number shown on the nameplate.
yMotor................................... 1 unit
yOPERATING MANUAL..... 1 copy
zModel number
Motor identication
A: Single shaft
PK 2 6 4 D A T
PK series
Motor frame size 6
: 56.4 mm (2.22 in.)
Motor case length
Blank: 5 terminals (unipolar)
D: 4 terminals (bipolar)
2: 2-phase
HM-7416-4
日本語は、英語の後ろに記載しています。
OPERATING MANUAL
Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures and safety precautions.
yPlease read it thoroughly to ensure safe operation.
yAlways keep the manual where it is readily available.
2-Phase Stepping Motor PK Series
Standard Type IP65 rated motor
PK26AT, PK26DAT
zProduct types
PK264AT PK266AT PK268AT
PK264DAT PK266DAT PK268DAT
The connection methods and rated currents are listed below.
Model Connection method Rated current
PK26AT Unipolar connection 2.0 A/phase
PK26DAT Bipolar connection 2.8 A/phase
Safety precautions
The motor is designed for incorporation into industrial
equipment. Touching the motor during operation may result
in bodily injury or property damage, since the output shaft is
rotating and the surface remains very hot. To prevent injury
or damage to the motor, be sure the motor is handled and
operated only by qualied personnel familiar with operations
involving electronic equipment.
Handling the product without observing the instructions that
accompany a“Warning” symbol may result in death or serious
bodily injury.
yDo not use the motor in explosive or corrosive environments,
in the presence of ammable gases, near combustible
materials, or locations subjected to the splashing of oil or
other hazardous liquids. Doing so may result in re, electric
shock or injury.
yTurn o the power before working on the product. Failure to
do so may result in electric shock.
yProvide a measure to retain the position of the movable
part of the equipment when the product is used in a vertical
application. The motor loses its holding torque when the
power is cut o. Without appropriate measures the movable
part will descend, resulting in injury or damage to the
equipment.
yInstall the motor in the enclosure to avoid contact with the
hands, or provide sucient earthing. Failure to do so may
result in electric shock.
yConnect the product correctly and securely according to the
wiring diagram. Failure to do so may result in re or electric
shock.
yAfter connecting the cable, securely x and tighten the
terminal box and cable clamp. Failure to do so may result in
re or electric shock.
yTurn o the power in case of a power failure. Failure to do so
may result in injury or damage to the equipment when the
motor starts suddenly upon the recovery of power.
yDo not disassemble or modify the motor. This may cause
electric shock or injury.
Handling the product without observing the instructions that
accompany a“Caution” symbol may result in bodily injury or
property damage.
yDo not use the motor beyond its specications. Doing so may
result in electric shock, injury or damage to the equipment.
yDo not touch the motor while the motor is conducting
current. Doing so may result in burns.
yUse a round terminal for connection with the protective earth
terminal. Failure to do so may result in re or electric shock.
yDo not carry the motor by its output shaft. Doing so may
result in injury.
ySecurely x the motor to an appropriate metal plate. Failure
to do so may result in injury or damage to the equipment.
yProtect the rotating part of the motor (output shaft) with a
cover. Failure to do so may result in injury.
yConduct the insulation resistance measurement or withstand
voltage test separately on the motor and the driver. Failure to
do so may result in damage to equipment.
yImmediately when trouble has occurred, stop running and
turn o the power. Failure to do so may result in re, electric
shock or injury.
yTo dispose of the motor, disassemble it into parts and
components as much as possible and dispose of individual
parts/components as industrial waste.
yProvide 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.
Precautions for use
•Drive unit
Use a motor driver unit appropriate for the method of motor
connection.
•Connecting the motor
Use a multi-core cable of AWG26 to 16 (0.14 to 1.25 mm2)
[7 to 13 mm (0.28 to 0.51 in.) in outer diameter] for motor
connection. Motor cable (with protective earth conductor) is
available as an option (sold separately). For details, contact your
nearest Oriental Motor oce.
Strip away 40 to 50 mm (1.57 to 1.97 in.) of sheath from the end
of the cable. Stripping the cable sheath by more than 50 mm
(1.97 in.) will reduce the sealing eect of the cable clamp.
•Cable clamp
“Cable clamp” is a section through which a cable passes. The
cable clamp conforms to the IP65 specication and consists of
the cap, gasket and receptacle. To ensure watertightness at the
cable clamp, tighten the cap after conrming that the cover of
the connection cable is securely sealed by the gasket.
•Motor case temperature
The motor is designed to the class B insulation specication.
When operating the motor, keep the motor case temperature to
100 °C (212 °F) or below. Operating the motor at temperatures
above 100 °C (212 °F) will shorten the life of the motor coil and
ball bearing. [The maximum temperature is 75 °C (167 °F) if the
equipment is to receive UL/CSA certication, because the motor
must conform to the class A insulation requirement.]
Installation
Installation requirements
The motor is designed to be a built-in component. It must be
used in an environment conforming to overvoltage category II,
pollution degree of class 3 and protection against electric shock
of class Iequipment.
Degree of protection: IP65 (Excluding the gap between the
shaft and the ange)
Install the motor in a well-ventilated location that provides
easy access for inspection. The locaton must also satisfy the
following conditions:
yInside an enclosure that is installed indoors (provide vent
holes)
yOperating ambient temperature: −10 to +50 °C (+14 to
+122 °F) (non-freezing)
yOperating ambient humidity: 85% or less (non-condensing)
yArea that is free of explosive atmosphere or toxic gas (such as
sulfuric gas) or liquid
yArea not exposed to direct sun
yArea free of excessive salt
yArea not subject to continuous vibration or excessive shocks
yArea free of excessive electromagnetic noise (from welders,
power machinery, etc.)
yArea free of radioactive materials, magnetic elds or vacuum

yUnauthorized reproduction or copying of all or part of this manual is prohibited.
yOriental 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.
yCharacteristics, specications and dimensions are subject to change without notice.
yWhile we make every eort to oer accurate information in the manual, we welcome your input. Should you nd unclear descriptions,
errors or omissions, please contact the nearest oce.
yis a registered trademark or trademark of Oriental Motor Co., Ltd., in Japan and other countries.
© Copyright ORIENTAL MOTOR CO., LTD. 2006
Published in December 2017
T
echnical Support Tel:[phone]
8:30
A.M. to 5:00 P.M., P.S.T. (M-F)
7:30
A.M. to 5:00 P.M., C.S.T. (M-F)
www
.orientalmotor.com
Schiessstraße 44, 40549 Düsseldor
f, Germany
T
echnical Support Tel:[phone]
www
.orientalmotor.de
T
el:01256-347090
www
.oriental-motor.co.uk
T
el:01 47 86 97 50
www.orientalmotor.fr
Tel:[phone]
www.orientalmotor.it
T
el:[phone]
www
.orientalmotor.com.br
• Please contact your nearest Oriental Motor oce for further information.
4-8-1Higashiueno,Taito-ku,Toky
o 110-8536
Japan
Tel:[phone]
www.orientalmotor.co.jp
Tel:[phone]
www.orientalmotor.com.tw
Singapore
Tel:[phone]
www.orientalmotor.com.sg
Tel:[phone]
www.orientalmotor.com.my
Korea
Tel:[phone]
www.inaom.co.kr
Tel:[phone]
www.orientalmotor.co.th
Tel:[phone]
www.orientalmotor.com.cn
Tel:[phone]
www.orientalmotor.co.in
Hong Kong Branch
Tel:[phone]
Installation method
Mount the motor on the smooth surface of a metal plate.
When installing the motor, secure it with four bolts (not
supplied) through the four mounting holes provided in the
motor’s installation surface, so as to leave no gaps between the
installation surface and metal plate.
Bolt size: M4
Tightening torque: 2 N·m (280 oz-in)
Insert the pilot located on the motor’s installation surface into
the mounting plate’s countersunk or through hole.
Metal plate
Pilot holder
(countersunk or through hole)
Installing the load
When installing a load to the motor, align the centers of the
motor’s output shaft and load shaft.
Be careful not to damage the output shaft or bearings within
when installing a exible coupling or pulley to the motor’s
output shaft.
Permissible overhung load and
permissible thrust load
The overhang load of the motor’s output shaft must not exceed
the permissible values shown in the table below. The thrust
value must be kept at or below the mass (*) of the motor.
•Permissible overhung load [N (lb.)]
Distance from the tip of motor’s output shaft [mm (in.)]
0 (0) 5 (0.20) 10 (0.39) 15 (0.59)
54 (12.1) 67 (15) 89 (20) 130 (29)
•Permissible thrust load [kg (lb.)]
PK264 0.6 (1.32) *
PK266 0.9 (1.98) *
PK268 1.2 (2.64) *
Connection
Connect the PK26AT to terminals 1 to 5 on the terminal.
Connect the PK26DAT to terminals 2 to 5 on the terminal.
1
For PK26

AT (1 to 5)
For PK26DAT
(2 to 5)
2345
Terminal block
Wiring diagrams
•PK26AT (Unipolar connection)
Phase A
2
11
3
4
5
+C
OM +C
OM
Phase B
Phase A Phase B
•PK26DAT (Bipolar connection)
Phase
A
3
4
5
Phase
B
2
Connection method
Connect the respective wires as illustrated below.
Connect either the internal protective earth terminal or external
protective earth terminal to the ground. Use the internal
protective earth terminal in a corrosive environment. If the
wiring distance between the motor and driver is long, use the
external protective earth terminal. Use a earthing conductor
thicker than AWG18 (0.75 mm2).
Protective earth conducto
r
for external protective
earth terminal
(AWG18 or more)
Motor lead wires
(AWG26 to 16)
Protective earth conductor
f
or internal protective
ear
th terminal
(A
WG18 or more)
Multi-core cable
[Outer diameter:
7 to 13 mm
(0.28 to 0.51 in.)]
1. Remove the terminal box
Loosen the mounting screws (M3) for securing the terminal box,
then remove the terminal box from the motor.
Terminal box
O-ring
2. Repair the connection cable
yStripping the cable sheath by more than 50 mm (1.97 in.)
from the end of the cable will reduce the sealing eect of the
cable clamp.
yWhen using the internal protective earth terminal, crimp a
round terminal (M4) to the protective earth conductor.
Receptacle
Gasket
Cap
40 to 50 mm
(1.57 to 1.97 in.)
6 mm (0.24 in.)
3. Connect the terminal
Loosen the screws on the respective terminals on the terminal
block, insert the motor lead wires from the openings, and then
tighten the screws.
Tightening torque: 0.6 N·m (85 oz-in)
4. Connect the protective earth terminal
Connect to the minimum distance.
yUsing the internal protective earth terminal
Connect the protective earth conductor to the protective earth
terminal.
Tightening torque: 1.2 N·m (170 oz-in)
Protective earth conductor
(AWG18 or more)
Pr
otective earth terminal
yUsing the external protective earth terminal
Two screw holes are provided for connecting the protective
earth terminal. Use a round terminal (M4) to connect one of the
two points to the ground.
Tightening torque: 1.2 N·m (170 oz-in)
PE
5. Install the terminal box
Conrm that an O-ring is set in the groove, align the motor case
and terminal cover, then tighten the mounting screws (M3) for
securing the terminal cover.
Tightening torque: 0.5 N·m (71 oz-in)
6. Tighten the cable cap
Place the gasket on the
receptacle and tighten the
cap. Before tightening the cap,
conrm that the sheath of the
cable is sealed by the gasket.
Tightening torque: 4.0 to 5.0 N·m
(560 to 710 oz-in)
Adjust the tightening torque
depending on the diameter and
material of the cable.
Inspection
It is recommended that the following items be checked
regularly after the motor has been operated. Should any
abnormality be found, stop using the motor and contact your
nearest Oriental Motor oce.
yIs there any abnormal noise coming from the motor’s
bearings (ball bearings) or other parts?
yIs there a loose terminal box or cable cap?
yIs there any scratch or sign of stress on the connection cable?
yAre the output shaft and load shaft properly aligned at their
centers?