HM-7426-3
OPERATING MANUAL
High-efficiency 2-Phase Stepping Motor
PK Series
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.
1
Introduction
Before using the motor
Only qualified personnel should work with the product.
Use the product correctly after thoroughly reading the section “Safety
precautions”.
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 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.
Hazardous substances
RoHS (Directive 2002/95/EC 27Jan.2003) compliant
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.
• 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 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 or injury.
• Provide a means to hold 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 causing injury or damage to
equipment.
• Install the motor in an enclosure in order to prevent injury.
• Keep the input-power voltage within the specified range to avoid fire.
• Connect the cables securely according to the wiring diagram in order to
prevent fire.
• Do not forcibly bend or push the connector. Doing so may fire.
• Do not forcibly bend, pull or pinch the cable. Doing so may fire.
• For the 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.
• Turn off the power in the event of a power failure, or the motor will
suddenly start when the power is restored and may cause injury or damage
to equipment.
• Do not disassemble or modify the motor. This may cause injury. Refer all
such internal inspections and repairs to the branch or sales office from
which you purchased the product.
Caution
Handling the product without observing the instructions that accompany a
“Caution” symbol may result in injury or property damage.
• Do not use the motor beyond its specifications, or injury or damage to
equipment may result.
• Do not touch the motor during operation or immediately after stopping.
The surface is hot and may cause a skin burn(s).
• Do not hold the motor output shaft or motor cable. This may cause injury.
• 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.
• 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.
• To prevent bodily injury, do not touch the rotating parts (output shaft) of
the motor during operation.
• Immediately when trouble has occurred, stop running and turn off the
driver power. Failure to do so may result in fire or injury.
• To dispose of the motor, disassemble it into parts and components as much
as possible and dispose of individual parts/components as industrial waste.
Checking the product
Confirm that all of the following items are available. To verify that the unit
you’ve purchased is the correct one, check the model number shown on the
nameplate. Should you find any item missing or damaged, contact the
Oriental Motor sales office where you purchased the product.
• Motor ................................................. 1 unit
• Motor cable [0.6 m (2 ft.)] ................ 1 pc. (PKE24-L only)
• Operating manual (this manual)........ 1 copy
Installation
Location for installation
The motor is designed and manufactured for installation in equipment.
Install it in a well-ventilated location that provides easy access for inspection.
The location must also satisfy the following conditions:
• Inside an enclosure that is installed indoors (provide vent holes)
• Operating ambient temperature –10 to +50 °C (+14 to +122 °F)
(non-freezing)
• Operating ambient humidity 85% or less (non-condensing)
• Area that is free of explosive atmosphere or toxic gas (such as sulfuric gas)
or liquid
• Area not exposed to direct sun
• Area free of excessive amount of dust, iron particles or the like
• Area not subject to splashing water (rain, water droplets), oil (oil droplets)
or other liquids
• Area free of excessive salt
• Area not subject to continuous vibration or excessive shocks
• Area free of excessive electromagnetic noise (from welders, power
machinery, etc.)
• Area free of radioactive materials, magnetic fields or vacuum
