Oriental motor PKP Series Operating Manual

O P E R AT I N G M A N U A L
2-Phase Stepping Motor
PKP Series CS geared type

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 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.
y Do not use the product in explosive or corrosive environments, in the
presence of flammable gases, in places subjected to splashing water, or
near combustibles. Doing so may result in fire or injury.
y Do not forcibly bend, pull, or pinch the cable. Doing so may result in fire.
y Do not disassemble or modify the product. Doing so may result in injury.
y Assign qualified personnel to the task of installing, wiring, operating/
controlling, inspecting and troubleshooting the product. Handling by
unqualified personnel may result in fire or injury.
y Take 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.
y Install the product inside 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 result in electric
shock.
HM-7466-2
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.

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 specified
permissible limit.
Continuing to operate the motor under an excessive radial load or axial load may
damage the bearings (ball bearings) of the motor. Be sure to operate the motor within
the specified permissible limit of radial load and axial load.
• Motor surface temperature
The motor surface temperature may exceed 100 °C (212 °F) under certain conditions
(operating ambient temperature, operating speed, duty cycle, etc.). To prevent the
bearings (ball bearings) of the motor from reaching its usable life quickly, use the motor
in conditions where the surface temperature does not exceed 100 °C (212 °F).
Also, use in a condition where the surface temperature of the gearhead does not exceed
70 °C (158 °F) in order to prevent deterioration of grease and parts in the gearhead.
• Grease leakage
On rare occasions, a small amount of grease may ooze out from the gearhead. 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.
• 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.
y Do not use the product beyond its specifications. Doing so may result in
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 during operation or immediately after
stopping. Doing so may result in a skin burn(s).
y Do not carry the motor by holding the motor output shaft or cable.
Doing so may result in injury.
y Do not place combustibles around the product. Doing so may result in
fire or a skin burn(s).
y Do not leave anything around the product that would obstruct
ventilation. Doing so may result in damage to equipment.
y Do not touch the rotating part (output shaft) during operation. 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 the 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 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.
y When an abnormal condition has occurred, immediately stop operation
to 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 motor in
operation, affix a warning label shown in the figure on
a conspicuous position. Failure to do so may result in a
skin burn(s).
Warning label
1