Oriental motor DRS Series Manuale utente

HL-14005-

Compact Linear Actuators

DRS Series Actuators

OPERATING MANUAL

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.

Table of contents

1Introduction.................................. 2

2Safety precautions ....................... 6

3Precautions for use...................... 8

4Installation...................................11

4.1 Location for installation..............11

4.2 Installing the actuator............... 12

4.3 Installing the actuator using a

mounting plate PADRL-

(sold separately)....................... 14

4.4 Installing a load......................... 16

5Connection..................................21

5.1 Connecting the driver............... 21

5.2 Connecting the electromagnetic

brake ........................................ 21

6Operation....................................23

6.1 How to use the adjustment knob

(adjustment knob type only)..... 23

6.2 Screw shaft projection.............. 23

7Maintenance/Inspection..............24

8Options (sold separately)............25

1 Introduction

−2−

1 Introduction

 Composition and contents of this operating manual

This manual describes the actuators used with the DRS series.

Read the following operating manuals regarding the DRS series and follow the

instructions.

• DRS Series Actuators OPERATING MANUAL (this manual)

Explains the installation of the actuator and a load.

• DRS Series DC Power Supply Input Driver OPERATING MANUAL

Explains the checking the product, combinations of actuators and drivers,

installation, connection, I/O, setting and troubleshooting of the driver.

 Before use

Only qualified personnel should work with the product. Use the product correctly

after thoroughly reading the section 2 “Safety precautions” on p.6.

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. Oriental

Motor Co., Ltd. is not responsible for any damage caused through failure to observe

this warning.

 Overview of the product

The compact linear actuator DRS series is a unit product consisting of a newly

designed linear-drive actuator combining a stepping motor ( ) with built-in

rotor position sensor and a ball screw, and a high-performance microstep driver.

The DRS series models incorporating are not subject to missteps, even

when the load changes suddenly. The speed and amount of traveling are constantly

monitored during operation, so that when an overload is about to cause the motor to

misstep, any delay in response is corrected and operation continues at maximum

thrust force.

 Standards and CE Marking

This product is recognized by UL and certified by CSA, and bears the CE Marking

(EMC Directive) in compliance with the EN Standards.

Applicable Standards Certification

Body Standards

File No. CE Marking

Actuator

Driver UL 60950-1

CSA C22.2 No.60950-1 UL E208200

EMC

Directive

∗ Approval conditions for UL 60950-1: Class III equipment, SELV circuit, Pollution degree 2

∗ For unit models, Oriental Motor declares conformance with the EMC Directive individually.

1 Introduction

−3−

• For Low Voltage Directive

This product is not subject to the EC’s Low Voltage Directive because its input

power supply voltage is 24 VDC.

• For EMC Directive

This product has received EMC measures.

For details, refer to DRS Series DC Power Supply Input Driver OPERATING

MANUAL

Driver

Actuator

DRS series

DC power

supply input∗

+LS sensor

LS sensor

Controller

(programmable

controller and

others)

Positioning

controller

ex: EMP series

(sold seperately)

Pulse output and

control input/output

Driver cable

(sold separately)

Control input/output

Control

input/output Extension cable

(sold separately)

∗ As for the power supply to the driver, use a DC power supply with reinforced insulation on

both the primary and secondary sides.

.

Hazardous substances

The products do not contain the substances exceeding the restriction values of

RoHS Directive (2011/65/EU).

System configuration

Controllers with pulse output functions are needed to operate the DRS series.

1 Introduction

−4−

 Names and functions of parts

This section covers the names and functions of the actuator’s respective parts.

The actuator adopts an integral structure where the ball screw and motor ( )

are stored together in a single case.

See the reference page indicated for details on each part.

Standard type

Illustration shows the DRS42 standard type.

Motor cable

Adjustment knob

(adjustment knob type only)

Use this knob to adjust the position

manually when the power is off.

Screw shaft

This is the moving

part of the actuator.

Mounting holes

(4 locations)

Set collar

This prevents the screw

shaft from retracting

completely into the case.

Load mounting hole

The DRS28 use an

external screw.

Case

∗ The standard type is also available with an electromagnetic brake (DRS42 only).

P.12

P.16

P.23

1 Introduction

−5−

Guide type

Illustration shows the DRS42 guide type.

Set collar

This prevents the screw

shaft from retracting

completely into the case.

Motor cable

Electromagnetic brake

leads

(electromagnetic brake

type only)

Linear guide

Used for transferring

a load and as an

anti-spin guide for

the ball screw.

Joint

A moving part

of the actuator.

Load mounting holes

(4 locations)

Electromagnetic brake

(electromagnetic brake type only)

Non-excitation operation

electromagnetic brake (24 VDC input)

Mounting holes

(4 locations)

Load mounting holes

(2 locations)

Case

Screw shaft

This is the moving

part of the actuator.

∗ The guide type is also available with an adjustment knob.

Varistor (electromagnetic brake type only)

Be sure to connect the varistor when wiring the electromagnetic brake.

P.19

P.18

P.12

P.21

P.18

2 Safety precautions

−6−

2 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.

Warning

Handling the product without observing the instructions that

accompany a “Warning” symbol may result in serious injury or

death.

Caution

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.

Warning

General

• 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,

injury or damage to equipment.

• For a vertical application, use the electromagnetic brake type and provide an

additional safety-brake mechanism to hold the load in position. The actuator loses

holding torque when the power is shut off, allowing the moving parts to fall and

possibly cause injury or damage to equipment.

• Do not use the actuator’s built-in electromagnetic brake mechanism for stopping

or for safety purposes. Using it for purposes other than holding the moving parts

and actuator in position may cause injury or damage to equipment.

Installation

• Install the actuator in an enclosure in order to prevent injury.

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

Repair, disassembly and modification

• Do not disassemble or modify the actuator. This may cause injury. Refer all such

internal inspections and repairs to the branch or sales office from which you

purchased the product.

2 Safety precautions

−7−

Caution

General

• Do not use the actuator beyond its specifications, or injury or damage to

equipment may result.

• Do not touch the actuator during operation or immediately after stopping. The

surface is hot and may cause a burn.

Transportation

• Do not hold the actuator’s screw shaft or motor cable. This may cause injury.

Installation

• Keep the area around the actuator free of combustible materials in order to

prevent fire or a burn.

• To prevent the risk of damage to equipment, leave nothing around the actuator

that would obstruct ventilation.

• Provide a cover over the moving parts of the actuator to prevent injury.

Operation

• To prevent bodily injury, do not touch the screw shaft of the actuator during

operation.

• The actuator’s surface temperature may exceed 70 °C (158 °F), even

under normal operating conditions. If an actuator is accessible during

operation, post a warning label shown in the figure in a conspicuous

position to prevent the risk of burns.

Warning

label

Disposal

• To dispose of the actuator, disassemble it into parts and components as much as

possible and dispose of individual parts/components as industrial waste.

3 Precautions for use

−8−

3 Precautions for use

This section covers limitations and requirements the user should consider when

using the DRS series actuator.

• Maximum thrust force

Always operate the actuator under a load not exceeding the maximum thrust force.

Operating the actuator under a load beyond the maximum thrust force or allowing

the screw shaft to remain locked may cause damage to the motor’s bearing (ball

bearing).

When using the actuator in a lift application, operate it under a load not exceeding

the maximum vertical transportable mass and without the application of an external

force.

• Do not let the screw shaft hit the stroke end or load.

Do not let the screw shaft hit the stroke end or equipment during operation, since

such an impact may damage the actuator. Always provide a stroke-end detection

sensor or limit sensor in order to prevent the screw shaft from hitting the stroke end

or load.

Actuator

Sensor

Sensor flag

Model Recommended starting

speed [mm/s (in/s)]

DRS28 0.2 (0.01)

Should the screw shaft hit the stroke end or

load, remove the load and retract the shaft

at the recommended starting speed.

DRS42 0.4 (0.02)

• Do not move the set collar from its original position.

The set collar prevents the screw shaft from retracting completely into the case.

If the set collar is moved, the screw shaft may be damaged, resulting in actuator

malfunction or damage.

• Actuator surface temperature

Use the actuator in conditions where its surface temperature will not exceed 90 °C

(194 °F). If the surface temperature of the actuator case exceeds 90 °C (194 °F) due

to operating conditions (ambient temperature, operating speed, operating duty, etc.),

a damaged motor coil or shorter service life of the bearing (ball bearing) may result.

3 Precautions for use

−9−

• Grease on screw shaft

Grease on the screw shaft may darken slightly within a short time after the start of

operation. This is not a problem if there is no abnormal noise (i.e., from deflection or

interference). Wipe off the dirty grease with a rag, and apply new grease.

If the grease on the screw shaft has darkened after the initial operation (one to three

weeks), the installation accuracy may have dropped. Check the installation accuracy

of the screw shaft by referring to p.20. Remove the darkened grease, and apply new

grease by referring to p.24.

• Conduct the insulation resistance measurement or withstand voltage

test separately on the actuator and the driver.

Conducting the insulation resistance measurement or withstand voltage test with the

actuator and driver connected may result in injury or damage to the product.

• Standard type actuator

Provide an anti-spin mechanism for the screw shaft.

When operating the standard type, always provide an anti-spin mechanism

externally to the product. If no anti-spin mechanism is provided, the screw shaft will

slip and operation will be disabled. In addition, make sure the load installed to the

screw shaft is supported with a linear guide, etc.

Guide

Actuato

Load

Installation accuracy

When using the standard type, always install it within the specified installation

accuracy. Low accuracy of installation may result in a malfunctioning actuator or

shorter service life of the actuator.

Refer to “Installation accuracy” on p.20.

When a carrier guide for load is provided.

Do not use the guide type. When a carrier guide for load is provided, always use the

standard type.

• Guide type

If the joint of the guide type receives a load moment, make sure the load moment

does not exceed the maximum load moment. Doing so may result in a malfunction

or shorter service life of the actuator.

3 Precautions for use

−10−

• Electromagnetic brake

Use the electromagnetic brake type for an application involving

up/down travel.

For a lifter or other device in which the load moves up and down, use the

electromagnetic brake type and provide an additional safety-brake mechanism to

hold the load in position. To hold the load in position, apply the electromagnetic

brake only after the actuator has stopped. Repeated braking for such a purpose will

wear the brake hub excessively, causing its holding ability to drop.

Connecting an electromagnetic brake

The electromagnetic brake operates via the ON/OFF status of the DC power supply.

When connecting the electromagnetic brake leads, observe the correct polarity.

Be sure to connect the supplied varistor (nonpolarized) to protect the switch contacts

and prevent noise. Refer to p.21 for details.

• Adjustment knob type

Use the adjustment knob to adjust the position manually when the power is off.

Do not touch the adjustment knob when the actuator is operating. To do so may

cause an actuator malfunction or cause damage to the actuator.

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