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Introduction

Before using the motor

Only qualified and educated personnel should work with the product.

Use the product correctly after thoroughly reading the section "Safety 

precautions." Should you require the inspection or repair of internal parts, 

contact the Oriental Motor office where you purchased the product.

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.

Related operating manuals

Operating manuals for this product are listed below.

Operating manuals are not included with the product. Download from Oriental 

Motor Website Download Page or contact your nearest Oriental Motor sales 

office.

Operating manual name

Motor

BLM

 Motor Cable Type  OPERATING MANUAL (this document)

Driver

BMU

 Series  OPERATING MANUAL

Refer to the operating manual of the driver for details about connections and 

operations.

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. Please 

read and understand these precautions thoroughly before using the product.

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.

Note

The items under this heading contain important handling 

instructions that the user should observe to ensure safe 

use of the product.

Description 

of graphic 

symbols

 :

Indicates "prohibited" actions that must not be performed.

 :

Indicates "compulsory" actions that must be performed.

 

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, electric shock or injury.

 

Do not transport, install, connect or inspect the product while the 

power is supplied. Always turn off the power before carrying out these 

operations. Electric shock or damage to equipment may result.

 

Do not use a motor in a vertical application. If the driver’s protection 

function is activated, the motor will stop and the moving part of the 

equipment will drop, thereby causing injury or equipment damage.

 

Do not machine or modify the cable. Doing so may result in fire, electric 

shock, or damage to equipment.

 

Do not forcibly bend, pull or pinch the cable. Doing so may result in fire, 

electric shock, or damage to equipment.

 

Do not touch the motor or driver when conducting the insulation 

resistance measurement or dielectric strength test. Accidental contact 

may result in electric shock.

 

Do not disassemble or modify the motor. This may result in electric 

shock, injury or damage to equipment. Refer all such internal inspections 

and repairs to the branch or sales office from which you purchased the 

product.

HM-5226-3

O P E R A T 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.

 

Please read it thoroughly to ensure safe operation.

 

Always keep the manual where it is readily available.

Brushless Motor

BLM

 Motor  Cable Type

  

 

Only qualified and educated personnel should be allowed to perform 

installation, connection, operation and inspection/troubleshooting of the 

product. Handling by unqualified and uneducated personnel may result 

in fire, electric shock, injury, or damage to equipment.

 

The motor is Class

 equipment. Install the motor so as to avoid contact 

with hands, or ground it to prevent the risk of electric shock.

 

Use a motor and driver only in the specified combination. Failure to do so 

may result in fire, electric shock, or damage to equipment.

 

Always turn off the power before performing maintenance or inspection. 

Failure to do so may result in electric shock.

 

Do not use the motor beyond the specifications. Doing so may result in 

fire, electric shock, injury or damage to equipment.

 

Do not touch the motor while operating or immediately after stopping. 

The surface of the motor is hot and it may cause a skin burn(s).

 

Do not leave anything around the motor that would obstruct ventilation. 

Doing so may result in damage to equipment.

 

Do not lift up the product by holding the output shaft or the cable. Doing 

so may result in injury.

 

Do not touch the motor output shaft (end or pinion) with bare hands. 

Doing so may cause injury.

 

When assembling the motor with the gearhead, exercise caution not to 

pinch your fingers or other parts of your body between the motor and 

gearhead. Injury may result.

 

When installing the motor in equipment, exercise caution not to pinch 

your fingers or other parts of your body between the equipment and 

motor. Injury may result.

 

Do not touch the rotating part (output shaft) while operating the motor. 

Doing so may cause injury.

 

Securely install the motor to the mounting plate. Inappropriate installation 

may cause the motor to detach and fall, resulting in injury or damage to 

equipment.

 

Provide a cover over the rotating part (output shaft). Failure to do so may 

result in injury.

 

Securely install a load on the output shaft. Inappropriate installation may 

result in injury.

 

Be sure to ground the motor and driver to prevent them from being 

damaged by static electricity. Failure to do so may result in fire or damage 

to equipment.

 

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, attach a 

warning label in a conspicuous position as shown in the 

figure. Failure to do so may result in a skin burn(s).

Warning label

 

Dispose the product correctly in accordance with laws and regulations, or 

instructions of local governments.

Precautions for use

Be sure to match the motor output power with the driver output power.

 

z

Connecting the motor and driver

Use an accessory connection cable (sold separately) when extending the wiring 

distance between the motor and the driver.

 

z

Grease measures

On rare occasions, 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.

 

z

Caution when using under low temperature environment

When an ambient temperature is low, since the load torque may increase by the 

oil seal or viscosity increment of grease used in the gearhead, the output torque 

may decrease or an overload alarm may generate. However, as time passes, the 

oil seal or grease is warmed up, and the motor can be driven without generating 

an overload alarm.

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