Dostek Engineering Sdn. Bhd.

34
Greatork ® Dostek Engineering Sdn. Bhd. (662419-H)

Transcript of Dostek Engineering Sdn. Bhd.

Page 1: Dostek Engineering Sdn. Bhd.

Greatork ®

Dostek Engineering Sdn. Bhd.(662419-H)

Page 2: Dostek Engineering Sdn. Bhd.

Tefulong Group Co., Ltd, CHINA

Established in 1987 lacated in Wenzhou city, one of

biggest and leading Electric valve Actuator manufacturers

in China.The intelligent electric actuator are our key

product and widely applied in oil & gas, petrochem

industry, refinery, power plant, water process, wastewater

treatment, pulp & paper, and other major industries

throughout mainland China.

TFL’s is well-equipped with modern CNC and testing

machines in its 30,000 SQM workshop under ISO

9001:2000 quality control system. Yearly production

capacity is as large as 45,000 units actuator.

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Machining Center Workshop

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Technique-Center

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Testing Workshop

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Factory Store

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Product Range

1) Multi-turn Actuator

2) Quarter-turn Actuator

3) Linear Actuator

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Multi-turn(AVA Series)

Multi-turn Actuator are required

for the automation of multi-turn

valves, which transmit to the

valve a torque for at least one

full revolution.

Major representatives of this

type is Gate & Sluice Valves

Torque Range: 45Nm-2500Nm

Dostek Engineering Sdn. Bhd.(662419-H)

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Quarter-turn(AVAT Series)

Quarter-turn Actuator are

required for the automation of

quarter-turn valves, which

transmit a torque to the valve for

less than one full revolution.

Major representatives of this

type is Butterfly & Ball Valves.

Torque Range:125Nm-2000Nm

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Linear(AVAMD Series)

AVAMD is typical representative

of the valves to be automated is

the control valve, like the plug in

the bathtub is pressed into drain,

the plug is pressed into the plug

seat by a stroke movement.

Torque Range:

7.7kN-60kN

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Torque

Measurement

Motor & Drive

Valve position

Control

Infrared

Setting

Local/ Stop/

Remote

Manual

Operation

Terminal

Compartment

Thrust Base

Design

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Pressure SensorThe precise torque value is

decide by the electronic signal

converted from the reaction

force of the motor shaft’s thrust

transferred by pressure sensor,

thus solves the problem of

calculating the torque

according to the changes of

power frequency, voltage and

temperature, as well as the

problem of torque excursion

because of technical efficiency

changes of gears.

Dostek Engineering Sdn. Bhd.(662419-H)

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AVAT Series

AVA Series

Hall effect magnetic

pulse system

accurately measures

and controls the

stroke of the actuator

without using gears

and switches.

Hall Sensor

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Main Board

Adopt a high-definition LCD

display window with backlight

enables easy viewing of valve

position, torque and function

status.

System-on-a-chip(SOC)

technology which packages all

the necessary electronic

circuits and parts of electronic

components without complex

electric wiring.

Dostek Engineering Sdn. Bhd.(662419-H)

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Motor

The electric motor was

Class F insulated, with a

time rating of at least 15

minutes at 104 F (40 C) or

twice the valve stroking

time, whichever is longer, at

an average load of at least

33% of maximum valve

torque.

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Motor Protection

Protection provided for motor as follows:-

a) The motor de-energised in the event of the event of a

stall when attempting to unseat a jammed valve.

b) Motor temperature is sensed by a thermostat to protect

against overheating.

c) Single phasing protection.

d) Anti-condensation heater energized when the actuators

are not operating.

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Actuator Display

Valve Fully Closed Valve Fully OpenValve Mid Travel

Green indicator

and closed

symbol displayed

Red indicator and

open symbol

displayed

Yellow indicator

and percentage

open value

displayed

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Display-Alarm Indication

Control Alarm

It display when the remote

control system maintains

an active ESD or interlock

signal. Local and Remote

operation will be inhibited

at this time.

Actuator Alarm

The actuator alarm icon is

displayed when the CPU

detects a problem from

inner or outer actuator.

Electrical operation will be

inhibited while it alarms.

Dostek Engineering Sdn. Bhd.(662419-H)

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Display-Alarm Indication

Battery Alarm Valve Alarm

The Battery alarm icon is

displayed when CPU

detects its battery as

being low.

When the valve alarm

appears and the

configured torque value

being developed, it will

cause the actuator trip-off.

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Non-intrusive–sealed for life

AVA/AVAT series need not be removed

for site commissioning. All settings and

adjustments are made using the

supplied infra-red Setting Tool. After

assembly in the controlled

environment of our manufacturing

facilities, air exchanges are eliminated-

all internal components are completely

protect for life.

Non-intrusive control selectors mean

there are no moving shafts penetrating

the control enclosure.

IrDA Setting

Tool

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Fieldbus System

Digital 2-wire communication module (slave device),

suitable for Modbus RTU protocol and RS-485 electrical

signal.

Greatork Electric Actuator are fully compatible with

following fieldbus communication systems:

1. Profibus DP

2. Modbus RTU

3. Foundation Fieldbus

This is achieved simply and cost effectively through fitting

an appropriate Greatork manufactured circuit board

module inside the actuator’s electric housing- normally at

the time of production.Dostek Engineering Sdn. Bhd.

(662419-H)

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Convention Hard Wired 4 cores power cable

Control SystemFieldbus

Master (PLC)

Actuator 1

Actuator 2

ControlFeedback

Actuator 3

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Bus Control System

Fieldbus

Master (PLC)Control System

Actuator 1

Actuator 2

Actuator 3Actuator 4Actuator 32

Max. up to 32pcs

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Advantage of Fieldbus

Traditional 4 to 20mA field

wiring often result in a rat’s

nest of wires, cable and

terminations.

A fieldbus installation

substantially simplifies

wiring.

1) Reduced wiring saves time during planning and installation.

2) Cable, marshalling rack and dimensions of the control cabinet will be

reduced.

3) More information can be transferred using fewer wires.

4) Self-diagnosis of the devices via fieldbus reduces downtimes and

maintenance times.

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Enclosure Protection

Greatork Electric Actuator are assembled into a double-

sealed watertight metallic. Double Seal system ensures

protection of internal components since they are

separated from the cable and terminal compartment by a

watertight terminal block.

Greatork Electric Actuator enclosure protection types are

defined according to the IP codes of EN 60529:2001.

Greatork Electric Actuator manufacturers supply devices

in enclosure protection IP 68 standard which provide

protection against submersion up to a max. head of

water. (15 meter, Duration : 90 hours)

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Explosion Protection

Greatork Electric Actuators designed for these

applications, being explosion-proof (ATEK 94/9/EC)

devices, have to be qualified by a test authority (notified

body). There is no such thing as a worldwide uniform

standard .

The Directive ATEX 94/9/EC is the European Directive for

equipment in potentially explosive atmospheres. It

defines the general protection objections (protection of

persons and property).

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International Certificate

ATEX 94/9/EC

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IP 68 Standard

International Certificate

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International Certificate

Inspection Certificate

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International Certificate

Certificate of Registration

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International Certificate

OHSAS 18001:2001

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International Certificate

ISO 14001

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International Certificate

ISO 9001

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International Certificate

Certificate of Conformity

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