Intelligent Motor Drive Quarter Turn Valved Actuator

Classification and use of SD products

SD non-intrusive intelligent electric actuator is the execution unit in industrial automation instrument, it receives from the regulator, PLC, DCS control signal from the computer, such as the completion of automatic adjustment, is indispensable to automatic control system for main equipment. It is widely used in power station, metallurgy, petroleum, chemical mine, light industry, pharmacy, gas power, building materials, transportation and city subway, water supply, sewage treatment and other industries.

Main technical parameters of SD electric actuator

Input signal：4-20mA impedance 250 Ω,0-10mA impedance 200 Ω

Dead area (sensitivity)：0.3-3% Continuous adjustable

Input channel：one analog current input channel , one set of switch volume channel .

Output channel：4-20mA DC impedance > 50 Ω. The input channel is isolated from the output channel.

Output torque and travel.

Linear-turn: 2000N-25000N travel 10,16,25,40,100mm

Quarter-turn:  100-40000Nm travel 90°

Multi-turn： 40-400Nm travel 1-50 circle

Basic error：±1%;±1.5%

Return difference:≦ ±1%

damping characteristics:No oscillation (zero period oscillation)

Level of proection: IP67

Operation environment:

 1. temperature: -28--+70      

2.humidity: ≦95% 

3.shake: frequency 10-100Hz strenth, 0.5 times of acceleration of gravity

4.impact: <5g

5. barometric pressure：72.5-106KPa

The non-corrosive gas media in the surrounding air must not be used in inflammable and explosive places.(The explosion-proof products can be found in my company's explosion-proof products'sample.)

voltage and power supply  

220V--±10%50Hz

Single phase:220V--±10%50Hz

380V--±10%50Hz

Three phase: 380V--±10%50Hz

*Special voltage, frequency needs to be customized in advance.

Optional models

Voltages at 50 Hz and 60 Hz

100,110,115,120,200,208,220,230,240,270,380,400, 415,440,460,480,500,550,575,590,600,660 and 690. AC voltage tolerance: +10/-15%, frequency +/-5%DC voltage tolerance: 17-36 VDC

For AC supplies the SD range utilises 2 phases only (phase -neutral/phase-phase) which are internally transformed and rectified to supply the control package and DC motor. In order to achieve supply load diversity on 3-phase supplies, multiple actuators should be connected equally across all three phases. Three terminals are provided for cable connection. Refer to wiring diagram.

Design criteria

Motors designed for operation of valve actuators require special consideration. As continuous running is not a requirement with isolating, inching or regulating duty valves, motors need only be short duty time rated.

Valve load can vary dramatically across stroke and from stroke to stroke as process and valve conditions vary.

These conditions can vary from light running to rated torque with a facility to exceed rated when unseating "sticky" valves, actual motor loading has no constant.

To apply traditional motor protection to actuator motors is therefore flawed, leading to spurious tripping or no protection at all..

FRY recognise the special nature of actuator motors and have therefore designed the SD range motor and its control package with this unique duty at the forefront.

Motor design

SD incorporate low inertia, 24 V permanent magnet DC motors and are class F insulated.

Motor control protection

The primary protection for the motor is torque switch protection. By measuring the actuator output torque and comparing to the open and close torque switch setting, effective motor and more importantly, valve protection is achieved.

Thermostats providing over temperature protection, if the duty cycle exceeds actuator rating, also protect SD units. SD control protection will prevent motor stall in the event of valve jamming. Using torque as the primary means of motor protection, along with thermostat and SD control protection, the requirement for traditional protection methods and their inherent weakness when applied to short time duty, variable load motors is eliminated.

Power supply cable sizing

As a minimum requirement, cables must be sized to ensure volt drop does not exceed 10% of nominal supply voltage at rated torque.

Fuse selection

Due to the unique nature of the motor duty and taking in to account the comprehensive control protection of the SD, sizing of fuses or trip devices should be based on protecting the power cable connected to the actuator.

Frequency converters and UPS

Where UPS systems are required, the power supply should have negligible harmonic distortion. In general terms actuators are designed to operate on power supplies conforming to recognised power supply standards such as EN 50160 - Voltage Characteristics of Electricity Supplied by Public Distribution systems.

Advantage

FRY is a specialized company that has been producing electric actuators and related products that drive industrial valves since 2014  ,FRY produces product lines that can be applied in various fields,ranging from water treatment such as water supply and sewage to power generation and petrochemical fields, and sells them to customers all over the world.

FRY has a 3Q philosophy to fulfill customer needs.

Quick Delivery

FRY honors delivery dates and proposes the fastest delivery time possible.

Quick Service

FRY operates service organizations and systems to take action as quickly as possible if a problem occurs related to our product.

Quick Response

FRY works to give our customers a sense of trust by responding to customer requests as soon as they are received.

History

2014       Our company was registered in a rental house at the same time,the foreign trade department was established.

2015    The office address was changed to:Zhongbei Town Energy Saving Building this year our company has done 9000 certification CE certification and other qualification certifications, and the main export countries  are southeast Asia, Parkistan Vietnam,Singpore and Thailand.

2016      The foreign trade business gradually increased exporting to South America Chile, Paraguay, Russia and other countries at the same time on the previous basis.

2020       Our company independently developed electric actuator sand applied for utility model patents and appearance patent certificates. The domestic and foreign trade business has grown rapidly,and the domestic trade department has been shortlisted as a fixed supplier for large enterprises such as Sinoma.Red Lion and Huaxin etc.The foreign trade department  has been shortlisted as a fixed supplier for large enterprises such as Sinoma.Red Lion and Huaxin etc.The foreign trade department has undertakenmajor projects such as  large-scale sewage treament.

2021        The annual sales volume of our companys electric actuators has approached 2,000units At the same time the following export qualifications have been handled:ROHS SILATEX etc,among them,the explosion-proof products have also passed the certification of the National Institute of Explosion-proofing.The main products have also passed the authoritative quality.

Status of major certification acquisition

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