1
Introduction
Before use
Only qualified personnel of electrical and mechanical engineering should work with the
product.
Use the product correctly after thoroughly reading the “Safety precautions”. In addition,
be sure to observe the contents described in warning, caution, and note in this manual.
The product described in this manual has been designed and manufactured to be
incorporated in general industrial equipment. Do not use for any other purpose. Oriental
Motor Co., Ltd. is not responsible for any damage caused through failure to observe this
warning.
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.
Description of signs
Handling the product without observing the instructions that
accompany a "Warning" symbol may result in serious injury
or death.
Handling the product without observing the instructions
that accompany a “Caution” symbol may result in injury or
property damage.
The items under this heading contain important handling
instructions that the user should observe to ensure the safe
use of the product.
Description of graphic symbols
Indicates "prohibited" actions that must not be performed.
Indicates "compulsory" actions that must be performed.
y
Do not use the product in explosive or corrosive environments, in the
presence of flammable gases, locations subjected to splashing water, or
near combustibles.
This may cause fire or injury.
y
Do not forcibly bend, pull or pinch the motor lead wire or cable.
This may cause fire.
y
Do not disassemble or modify the product.
This may cause injury.
y
Assign qualified personnel the task of installing, wiring, operating/
controlling, inspecting and troubleshooting the product.
Failure to do so my result in fire or injury.
y
If this product is used in a vertical application, be sure to provide a
measure for the position retention of moving parts.
Failure to do so may result in injury or damage to equipment.
y
Install the product in an enclosure.
Failure to do so may result in injury.
y
Connect the cables securely according to the wiring diagram.
Failure to do so may result in fire.
y
For the power supply, use a DC power supply with reinforced insulation
on its primary and secondary sides.
Failure to do so may cause electric shock.
HM-7448-3
O P E R AT I N G M A N U A L
Thank you for purchasing an Oriental Motor product. This Operating Manual describes
product handling procedures and safety precautions.
y
Please read it thoroughly to ensure safe operation.
y
Always keep the manual where it is readily available.
2-Phase Stepping Motor
PKP
Series
SH
Geared Type
y
Do not use the product beyond its specifications.
This may cause injury or damage to equipment.
y
Keep your fingers and objects out of the openings in the product.
Failure to do so may result in fire or injury.
y
Do not touch the product while operating or immediately after
stopping.
This may cause a skin burn(s).
y
Do not carry the motor by holding the motor output shaft, motor lead
wire or cable.
Doing so may cause injury.
y
Keep the area around the product free of combustible materials.
Failure to do so may result in fire or a skin burn(s).
y
Leave nothing around the product that would obstruct ventilation.
Failure to do so may result in damage to equipment.
y
Do not touch the rotating part (output shaft) while operating the motor.
Doing so may result in injury.
y
Provide a cover over the rotating part (output shaft) of the motor.
Failure to do so may result in injury.
y
Use a motor and driver only in the specified combination.
Failure to do so may result in fire.
y
Provide an emergency stop device or emergency stop circuit 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.
y
When an abnormal condition has occurred, immediately stop operation
and turn off the driver power.
Failure to do so may result in fire or injury.
y
The motor surface temperature may exceed 70 °C (158 °F)
even under normal operating conditions. If the operator
is allowed to approach the running motor, attach a
warning label as shown below in a conspicuous position.
Failure to do so may result in a skin burn(s).
Warning
label
Precautions for use
•
When conducting the insulation resistance measurement and the
dielectric strength test, be sure to separate the connection between 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 a radial load and axial load in excess of the specified
permissible limit
Operating the motor under an excessive radial load or axial load may damage the motor
bearings (ball bearings). Be sure to operate the motor within the specified permissible
limit of radial load and axial load.
•
Motor surface temperature
The surface temperature on the motor case may exceed 100 °C (212 °F) depending on
operating conditions such as ambient temperature, operating speed, duty cycle and
others. To prevent the motor bearings (ball bearings) from reaching its usable life quickly,
use the motor in conditions where the surface temperature will not exceed 100 °C
(212 °F).
Use the geared motor in a condition where the gear case temperature does not exceed
70 °C (158 °F), in order to prevent deterioration of grease and parts in the gear part.
•
Grease leakage
On rare occasions, a small amount of grease may ooze out from the geared motor. If
there is concern over possible environmental damage resulting from the leakage of
grease, check for grease stains during regular inspections. Alternatively, install an oil pan
or other device to prevent leakage from causing further damage. Oil leakage may lead to
problems in the customer’s equipment or products.
