1
Introduction
Before use
Only qualied 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 is 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 compensation for damage caused through failure to
observe this warning.
Safety precautions
The precautions described below are intended to ensure the safe and correct use of the
product, and to prevent the customer and others from exposure to the risk of injury. 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.
yDo not use the product in explosive or corrosive environments, in the
presence of ammable gases, in places subjected to splashing water, or
near combustibles.
Doing so may result in re or injury.
yDo not forcibly bend, pull or pinch the lead wire or cable.
Doing so may result in re.
yDo not disassemble or modify the product.
Doing so may result in injury.
yAssign qualied personnel to the task of installing, wiring, operating/
controlling, inspecting and troubleshooting the product.
Failure to do so may result in re or injury.
yTake measures to keep the moving part in position if the product is used
in vertical operations such as elevating equipment.
Failure to do so may result in injury or damage to equipment.
yInstall the product inside an enclosure.
Failure to do so may result in injury.
yConnect the cables securely according to the wiring diagram.
Failure to do so may result in re.
yFor 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.
yDo not use the product beyond its specications.
Doing so may result in injury or damage to equipment.
yKeep your ngers and objects out of the openings in the product.
Failure to do so may result in re or injury.
yDo not touch the product during operation or immediately after
stopping.
The surface is hot, and this may cause a skin burn(s).
yDo not carry the motor by holding the motor output shaft, lead wire or
cable.
Doing so may result in injury.
yKeep the area around the product free of combustible materials.
Failure to do so may result in re or a skin burn(s).
yLeave nothing around the product that would obstruct ventilation.
Failure to do so may result in damage to equipment.
yDo not touch the rotating part (output shaft) while operating the motor.
Doing so may result in injury.
yProvide a cover over the rotating part (output shaft) of the motor.
Failure to do so may result in injury.
yUse a motor and driver only in the specied combination.
Failure to do so may result in re.
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.
yWhen an abnormal condition has occurred, immediately stop operation
to turn o the driver power.
Failure to do so may result in re or injury.
yThe motor surface temperature may exceed 70 °C (158 °F)
even under normal operating conditions. If the operator is
allowed to approach the motor in operation, ax a warning
label shown in the gure on 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 or the
dielectric strength test, be sure to separate the connection between the
motor and the driver.
Conducting the insulation resistance measurement or dielectric strength test with the
motor and driver connected may result in damage to the product.
•Do not apply a radial load and axial load in excess of the specied
permissible limit
Continuing to operate the motor under a radial load or axial load exceeding the
permissible value may cause damage the bearings (ball bearings) of the motor. Be sure
to operate the motor within the specied permissible value 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 bearings (ball bearings) of the motor from reaching its usable
life quickly, use the motor in conditions where the motor surface temperature dose not
exceed 100 °C (212 °F).
•Holding torque at standstill
The motor holding torque is reduced by the current cutback function of the driver at
motor standstill. When selecting the motor, take account of the motor torque drop at the
time of stopping.
HM-7443-9
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
PKP Series
