Oriental motor PK Series Operating Manual

O P E R A T I N G M A N U A L
2-Phase Stepping Motor
PK Series PS Geared Type

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.
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 lead wires 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 motor lead wire. 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.
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 lead wires. This may cause
injury.
• 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.
Warning
Caution
HM-7428
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.
• 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.
• To dispose of the motor, disassemble it into parts and components as much
as possible and dispose of individual parts/components as industrial waste.

Precautions for use

•
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.
•
About grease of geared motor
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.
•
Allowable torque
Operate the motor by making sure the sum of the acceleration/deceleration
torque at the starting/stopping of the motor and the load (friction) torque
doesn't exceed the allowable torque. Operating the motor in excess of the
allowable torque may result in a damaged gear.
•
Allowable speed range
Operate the motor at speeds within the allowable range. Operating the motor
at a speed outside the allowable range may result in a shorter gear life.
•
Backlash
The gear output shaft is subject to backlash of 35´. To reduce the effect of
backlash, perform positioning operations from one direction only-either from
the CW direction or the CCW direction.
•
Rotating direction of the gear output shaft
Rotating direction of the gear output shaft and the motor shaft are same
direction.

Checking the product

Verify that the items listed below are included. Report any missing or
damaged items to the branch or sales office from which you purchased the
product. Check the motor model number against the number shown on the
nameplate.
• Motor ............................................................... 1 unit
• Connector lead wire [0.6 m (2 ft.)] ................. 1 pc. (PK2 -L
∗
represents an alpha numeric indicating the motor type.
• OPERATING MANUAL (this document) ..... 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)
• Ambient temperature: −10 to +50 °C (+14 to +122 °F) (non-freezing)
• 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
∗
only)