Oriental motor 4RK25GN-AM-115 Operating instructions

Brand: Oriental motor

Model: 4RK25GN-AM-115

Type: Operating instructions

HM-9030-2

Thank you for selecting ORIENTAL MOTOR products.

To ensure correct operations, please read these instructions

carefully before using this motor.

Electromagnetic Brake Motors Single Phase 115V, 60Hz 4RK25GN-AM-115, 5RK40GN-AM-115

Single Phase 220/240V, 50Hz 4RK25GN-CME, 5RK40GN-CME

These Electromagnetic Brake Motors are reversible motors with a built-in de-energized electromagnetic brake [Fail-Safe Brake].

These motors are designed for 115V, 60Hz or 220/240V, 50Hz power sources.

Features

1. Employing a de-energized, electromagnetic brake, the brake is

activated upon power shut off. The motor stops immediately and

holds the load firmly.

2. Sufficient holding torque is obtained regardless to the motor speed or

the power source frequency.

[Holding brake torque: 4RK25 Type 13 oz-in(9.8N-cm), 5RK40

Type 20 oz-in(14.7N-cm)]

3. The overrun at motor shaft is approximately 2 3 rotations.

(With no-load and motor power shut off simultaneously.)

Connecting Diagrams

Protection of the relay contacts

The motor switch (SW2) and the electromagnetic brake switch (SW3) emit sparks

when turned on and off. In order to protect the relay contacts.

CR circuit ( ) must be connected.

Co=0.1 0.2 F 250WV:4RK25GN-AM-115,

5RK40GN-AM-115

500WV:4RK25GN-CME,

5RK40GN-CME

Ro=5 200 , 1/4W minimum

Switch Specifications

No. of switches

SW1

SW2

SW3

SW4

Switch specifications

Single Phase 115V

AC125V 3A

Minimum

Single Phase 220/240V

AC250V 1.5A

Minimum

Note

Move together

WHITE

Capacitor

STOP

RUN

CCW

SW2*

Ro Co

SW1 GRAY

LINE BLACK Motor

Electro-

magnetic

Brake

STOP

RUN

OFF

SW3*

Ro Co

YELLOW

SW4

SW2 and SW3 move together.

Timing Chart

Operations

Run/Stop

1. Motor will rotate when SW2 and SW3 are switched simultaneously to

RUN (short circuit) switching SW4 to OFF (open).

2. When SW2 and SW3 are switched simultaneously to STOP (open),

the motor stops immediately by electromagnetic brake and holds the

load.

3. To rotate the motor shaft by hand during the motor stops, switch

SW4 to ON (short circuit). The electromagnetic brake is released

and the motor shaft can be rotate easily by hand.

(Always switch SW4 to OFF (open) when running and stopping the

motor. SW4 is not necessary when such a operation is not needed.)

Direction of Rotation

To rotate the motor in a clockwise (CW) direction, switch SW1 to CW.

To rotate it in a counter-clockwise (CCW) direction, switch SW1 to

CCW.

The diagram shows the direction of rotation of the motor shaft as

viewed from the motor shaft end.

SW1

SW2

SW3

SW4

Motor

ONOFF

CCW

RunStop Stop Stop

Brake Release

Run

CCW

Stop Stop Stop

Run

Run Stop

Load-

Holding Run Brake

Release

Stop

Load-

Holding

Stop

Load-

Holding

Gearhead Connection

Specially designed gearheads are available that can be easily coupled

directly to these motors.

Sufficient torque can be obtained while reducing the motor speed to the

required speed on the gearhead output shaft.

Types of Gearhead

The box( ) represents the desired gear ratio, which thereby becomes part of

the code for the gearhead.

Gear Ratio:3, 3.6, 5, 6, 7.5, 9, 12.5, 15, 18, 25, 30, 36, 50, 60, 75, 90, 100,120,

150, 180

Precautions for Connecting Gearhead to the Motor

1. Connecting Gearhead

As the figure to the right shows, motor and gearhead are put together

using the recessed areas on each unit as guides while gently turning

the gearhead back and forth for smooth engagement of gearing and

cog. Care should be taken not to damage the shaft by applying

excessively large force during attachment. Then use the mounting

screws that come with the gearhead to screw the gearhead onto the

motor until if fits snugly.

Note:Note that attempt to put motor and gearhead together by force or

entrapping of material like metal chips can result in damage to the geared

section of the shaft or the cog leading to abnormal noise and shortened

operating life. Assembly should be carried out with the necessary care.

2. Installation

Install the motor firmly to your equipment. The heat-sink effectiveness

and protection of vibration are required as much as possible. Useful

motor mountings are available separately.

3. Grounding

Any one of the mounting bolts may serve to fix the grounding wire to

the motor casing at the time of installation of the unit. If necessary,

remove all the bolt hamptom that may impede conductivity around the

bolt mounting hole.

Precaution on Operation

If the motor is ON continuously for a period of 30 minutes or more,

the rated temperature may be exceeded. Under no circumstances

should the temperature of the motor case be allowed to rise above

90 (194ºF).

Use the motor in a place where the working ambient temperature is

10 to 50 (14ºF to 122ºF) and humidity is 85 less.

Do not use the components in a place where a corrosive gas, water,

oil, dust and/or direct sunlight may contact the components.

Avoid places where vibration/shocks are heavy and/or constant.

The geared section of the shaft

Edge of recessed area

Recessed area

Flange surface

Ground Wire

Motor Models

4RK25GN-AM-115

4RK25GN-CME

5RK40GN-AM-115

5RK40GN-CME

Gearhead Models

Inch size output shaft

4GN KA

(Ball bearing type)

5GN KA

(Ball bearing type)

Metric size output shaft

4GN K

(Ball bearing type)

5GN K

(Ball bearing type)

Inch size shaft gearhead Metric size shaft gearhead

Models

4GN KA

5GN KA

Shaft Diameter

0.375" dia.

(9.525mm dia.)

0.5" dia.

(12.7mm dia.)

Shape of

Shaft

Flat cutted

Models

4GN K

5GN K

Shaft Diameter

10mm dia.

12mm dia.

Shape of

Shaft

Key slot

(Key provided)

Key slot

(Key provided)

Size of Gearhead output shaft

Trouble Shooting

Symptoms

Motor does

not turn

Motor turns

wrong

direction

Causes

No voltage coming to

motor

Electromagnetic brake is

Load is too large

Motor is mis-wired

Gearhead is attached

Check Point

Check that motor has no loose-

connection

Check that lead wires have no

interruption

Check that the electromagnetic brake is

released

Check that the electromagnetic brake

has been energized

Remove the load and check operation of

motor alone

Check the motor connection

Check the gear ratio

When connecting gearhead to reduce

the speed, the gearhead output shaft

can be made to rotate in an opposite

direction as the motor depending on

which speed reduction ratio is chosen.

Printed on Recycled Paper

Characteristics, specifications and dimensions are subject to change without notice.

Please contact your nearest ORIENTAL MOTOR office for further information.

ORIENTAL MOTOR U.S.A CORP.

Los Angeles Office Tel:(310)784-8200 Fax:(310)325-1076

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Canada Office Tel:(905)502-5333 Fax:(905)502-5444

Technical Support Line Tel:(800)468-3982

Available from 8:30 AM to 8:00 PM , Eastern Time

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Headquarters and Düsseldorf Office

Tel:02131-95280Fax:02131-952899

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Tel:01252-519809 Fax:01252-547086

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Tel:01 47 86 97 50 Fax:01 47 82 45 16

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Tel:02-3390541 Fax:02-33910033

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Tel:(02)2299-9360 Fax:(02)2299-4173

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Tel:(745)7344 Fax:(745)9405

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Tel:(02)632-9122 Fax:(02)679-4588

ORIENTAL MOTOR CO.,LTD.

Headquarters

Tel:(03)3835-0684 Fax:(03)3835-1890

Oriental motor 4RK25GN-AM-115 Operating instructions

Oriental motor 4RK25GN-AM-115 Operating instructions

Oriental motor 4RK25GN-AM-115 Operating instructions

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