Tel:86-28-61337566

Fax:86-28-62323272

Address:H7/1-2, Qingyang Industrial Headquarter Base, No. 1 Chengfei Avenue, Qingyang District, Chengdu, Sichuan


Overseas Dept in Shenzhen:

Tel: 86-755-83234282

Fax:86-755-28168816

Skype: ellenhu.selectech

E-mail: sales@selectechcn.com

Address: E-605 Yuetong Building,MeiLong South Road, MinZhi,Longhua,ShenZhen , GuangDong,China,518131

AT:   home <<  Durable Variable Speed Vacuum Pump
¤ VLC Series
  • Performance parameters
  • Diagram
  • Wiring instructions
  • Corresponding accessories
  • Operation video
  • Attentions

●Characteristics:

1.It is equipped with brushless DC motor, durable and low interference.It can run continuously 
around the clock without interfering with the surrounding electronic components or polluting power source. 
Stable performance and high reliability.Maintenance-free . Damp gas as the medium is acceptable.
No pollution during the gas transmitted as it is oilless operation. Corrosive gas is allowed to be 
input(The material for the parts which come in contact with gas : Glass fiber reinforced nylon ,EPDM rubber).
Easy to adjust the speed of the pump. The flow rate can be changed by freely adjusting the rotate speed of 
motor through electrical control.

2.There are feedback signals about the rotating speed of motor, which indicate the working status and can 
realize closed-loop control,thus facilitate the intelligent control.(this function do not apply to Economical 
version and Simplified version)

3.It can be mounted in any plane.such as horizontal plane, vertical plane, slope.Perfect self-protective
function.It has functions of overheating protection and overload protection.(This function do not apply 
to Economical version).The pump applies to wide fields, especially in gas analyzer, industrial instruments etc.

 

 ●Certificate:

CE

CONFORMITE

 EUROPEENNE

EMC

Electro      Magnetic  

 Compatibility

 

 ●Technical Specifications

Model

Operating Voltage

(V DC)

Load Current

(mA)

Flow rate (L/min)

Vacuum

(negative pressure)

(kPa)

Peak value

Effective value

VLC8401

12±10%

<240

1.3

1.1

≈-17

24±5%

<190

1.2

VLC7602

12±10%

<240

2.3

1.7

≈-25

24±10%

<190

2.2

VLC6503

12±10%

<280

3.3

2

≈-36

24±10%

<200

3.2

Remark : customized is available

 

●Performance Comparison

 

       Version

Economical version

Simplified version

Standard version

Component 

(quality level)

Brushless motor

★★

★★★★

Diaphragm

★★

★★★★

Bearing

★★

★★★★

Performance

Continuous loading service life

≥2500hours

>6000hours

>10000 hours

Electromagnetic Interference

▲▲▲▲

▲▲▲

Ambient Temperature

0~40℃

0~50℃

0~50℃

Adjustment of speed

overload protection

×

Overheating protection

×

Speed feedback Signal

×

×

Frequently start-stop parameters

 

Service life

>180 thousand times

>800 thousand times
>1.8 million times

Working condition for test

 

Run 30 seconds,
Stop 30 seconds
Run 15 seconds,
Stop 15 seconds
Run 10 seconds,
Stop 10 seconds
Cycle operation around the clock,the inlet is blocked completely.
Test is still undergoing

Speeder matched

Only match with simplified version speeder
steady speed type speeder,digital speeder,simplified speeder

 

Remarks:
1.The more ★ is,the better performance of this pump shall be.
The fewer ▲ is the lower electromagnetic interference of this pump shallbe.

2.The above comparison does not mean a product is not good.
It is for customers reference only. Here by Instructions!

 

●Attentions:

1.The inlet of this pump can run in heavy duty ,even completely blocked,both are proper functioning.

2.The outlet of this pump should remain unobstructed. If not ,as the result of the blockage,
the high-pressure will be caused and threat to safety. If you need large damping components for the outlet,
please select the FQY or FNY、FKY、FCY serials.

3.Customization is available.

4.Weight: approximately 240 g.

5.All parameters presented in this instruction are based on the standard atmospheric pressure at 25℃,
unless otherwise defined. The free flow is referred to as the flow.

 

●User Instructions

1.Service Conditions

The pump shall not be exposed to direct sun light.
It shall work in clean and non-corrosive environment.
Ambient temperature: 
Economical version: 0-40 ℃ (No condensation) 
Simplified version & standard version:0-50 ℃ (No condensation)
Relative humidity: ≤ 90 %

2.Working medium

Damp gas is allowed, but with solid particles are not acceptable.
The materials and names for the parts which come in contact with gas as below:

Part name

Part material

Remark

pump body

Glass fiber reinforced nylon

All material has certain ability of corrosion resistance,please evaluate the tolerance of the parts which come in contact with gas pumped. 

diaphragm

EPDM rubber

valve

 

According to the temperature of gas inlet,the series product can be divided into two types,
normal-temperature medium type and high-temperature medium type.Orders for high-temperature 
medium type shall be specifically marked, otherwise, it shall be normal-temperature medium type.

Type

Temperature range allowed for gas suction

Remark

Normal-temperature medium type

0~50℃

Solid particles such as ice particles are forbidden to be contained in the gas suction.

High-temperature medium type
0~100℃


VLC Series Dimensional Drawings

UG

Drawing unit: mm

 

●Wiring instructions:

S/N

Color of leading wire

Function

Action voltage

Remark

1

White

Control the start & stop of motor(optional wire)

2V≤star ≤5V

0V≤stop≤0.8V

This wire is used for the control the star and stop of pump.Especially frequent starts and stops.If you do not need ,should wrap it with insulation material .Disconnect this red power wire ,if the pump do not work for a long time.

2

Blue

Pulse Width Modulation(PWM)

 

0V≤star ≤0.8V 

2V≤stop≤5V

Adjust the motor speed and pump flow by changing the duty-cycle.We suggest the PWM input signal frequency in this range :20KHz-30KHz .This port can not control the start & stop.

3

Yellow

FG feedback signal (motor speed feedback signal, pulse signal).The motor output 6 pulse for making a circle (No yellow wire for economic version and simplified version)

Low level <0.5V;high level <6V,recommend high level=5V.Max.rated current of FG signal is 2mA.   

The internal motor is open-drain status,therefore you need to be pulled outside.Voltage 5V,resistance 5.1kΩ

4

Orange

Special wire ,no useful for this pump. Connect with positive pole

 

5

Black

Power wire,negative pole

 

 

6

Red

 

Power wire,Positive pole

 

 

 

 

Warning:No hot plugging!No connect or disconnect the motor leading wire when the power is on
Forbid to reverse the positive and negative pole ,otherwise the motor will be damaged!

 

If you do not need use the speed governing and speed feedback signal,connection as below:

Color of motor leading wire

Connection

Remark

Red

Positive pole

If the leading you received is yellow & white,and you do not need them,please wrap them with insulation material separately.

Blue

Negative pole

Orange

Black

 

 

 

●Motor electrical schematic diagram and peripheral circuit:

 

1.As shown in figure. Several ports must connect schottky diode, here is why:
the internal functions of the motor control and drive are MOS(Metal-Oxide-Semiconductor) tube,
the input impedance is high, the ports must be connected to the schottky diodes to prevent
any accidental larger jamming signal to breakdown the MOS tube.

2.The requirement for the control of electricity level: 0V≤low level≤0.8V,2V≤high level≤5V

3.FG port for motor speed feedback signal, should be paid attention to in the application:
FG output signal port is open drain, the user needs to connect a pull-up resistors,
an application example as shown in figure.

 

 

Optional Accessories

Filter Silicone tube(Note: inner diameter is about 5mm, and outer diameter is about 9mm.)

 

Note: A medium size filter and a 10cm silicone tube will be included in the package for each
pump.

 

Attentions

 

1.No foreign matter should keeping in the nozzle, the outlet of this pump should remain unobstructed,
or the micro pump may be damaged.

2.The product has not explosive-proof performance. No using in inflammable and explosive environment.

3.When the gas input is hazardous, users must re-seal the pump for the sake of safety!

4.All gas circuit elements such as gas tank must be provided with enough strength for the sake of safety.

5.No hot plugging with power on, otherwise it will cause the damage of motor.

Chengdu Qihai Electromechanical Equipment Manufacturing Co., Ltd
成都气海机电制造有限公司 蜀ICP备12008449 成公网备字[200600057]号