SandSun VA08 Скачать руководство пользователя страница 6

OVERLOAD

 

  PROTECTOR

 

 

8. 

Working Principle

: 

8.1  Press is normally operate: 

When the press is normally operate, inner to have pressure control valve of overload   
protector, which has the function of auto adjust hydraulic pressure. It can prevent effects 
of excessive rising of hydraulic pressure caused by raised temperature when press is   
operating. 

 

8.2  When overload protector is releasing: 

When overload occurs, overload protector will work to release excessive pressure 
immediately. Meanwhile, it will out put electric signal to stop press immediately, and   
the air solenoid valve, which is used by overload protector, will be“OFF”(cut off the 
power supply). 

 

8.3  After overload protector was released. (or hydraulic pressure isn

t enough): 

After overload occurred, you have to eliminate the overload situation or to reset the   
press; Meanwhile, the air solenoid valve is  “ON”  (electrify) to supplement oil of   
cylinder to reach normal working pressure. Press will return to normal operation. 

 

2005.07.08

     

                                                                           

SANDSUN

         

     

                         

4

 

Circuit of Limit Switch

NO type(AT11-1-

I

NC

 

type(AT11-2-

I

) common 

Press is normally 

operate   

14

13

22

21

OFF

14

13

22

21

ON

When overload 

protector is 

releasing 

14

13

22

21

ON

14

13

22

21

OFF

After overload 

protector was 

released 

(or hydraulic 

pressure isn

enough) 

14

13

22

21

ON

14

13

22

21

OFF

Содержание VA08

Страница 1: ...L VA08 Air Pressure Type SANDSUN PRECISION MACHINERY CO LTD T e l 8 8 6 4 8 5 3 6 6 8 8 F a x 8 8 6 4 8 5 3 6 6 9 9 http www sandsun com tw E mail sandsun ms26 hinet net 57 7 NO 7 LANE 57 SEC 3 CHUNG...

Страница 2: ...1 4 BASIS OF SELECTION 2 5 ATTENTION POINTS FOR PIPING 2 6 CAUTION IN USE 3 7 METHOD OF AIR DRAIN 3 8 WORKING PRINCIPLE 4 9 SETTING METHOD OF LIMIT SWITCH 5 10 TROUBLESHOOTING 6 11 PUMP ASSEMBLY DIAGR...

Страница 3: ...ssive rising of hydraulic pressure caused by raised temperature when press is operating 2 Selection of Model V A 0 8 1 2 3 Suitable for press 200 tons down Setting range of overload hydraulic pressure...

Страница 4: ...according to releasing flow rate of cylinder inside slide Q Releasing flow rate of overload protector which you choose has to be more than of cylinder inside slide when overload occurs Please consider...

Страница 5: ...king 7 1 3 Wait for around 20 seconds in order to exhaust air completely 7 1 4 Turn the air drain bolt clockwise to fasten it and then pump stops working hydraulic pressure is raising 7 1 5 If the pum...

Страница 6: ...ly and the air solenoid valve which is used by overload protector will be OFF cut off the power supply 8 3 After overload protector was released or hydraulic pressure isn t enough After overload occur...

Страница 7: ...thickness gauge of 0 8 1 0 mm each between adjustable screw and head of limit switch to adjust limit switch After adjustable screw please fasten the nut and then insert the thickness gauge to re confi...

Страница 8: ...ught Check if any damage happens from the inlet base 24 and inlet valve 20 3 Without enough oil in the oil tank Refill hydraulic oil and let the air drain 4 Pilot valve 29 caught Check if any damage h...

Страница 9: ...g Filter Exchange valve Check ring Silencer plate Buffer pad SANDSUN 1 1 1 1 1 1 1 1 Spring 39 41 42 40 Bolt Cover Silencer 37 38 35 36 M6x90 61 2800 61 2400 61 2500 R 45 61 2600 61 2700 61 5700 Inlet...

Страница 10: ...0 AS 46 AS 24 61 1400 TM14x30 AT11 1 I NO Specification M5x12 M6 M4x25 M4x4 1 2 1 1 1 1 1 1 1 Qt y 1 2 1 61 0510 61 0401 61 0305 61 0309 61 0307 BP 12 5 61 0200 TP 12 5 61 1501 61 0100 Specification B...

Страница 11: ...ing P 16 19 O Ring P 16 Cylinder Port 27 3 11 52 O Ring P 24 60 70 Limit Switch 82 277 PT1 2 Overload Cylinder Port 74 Air Drain Bolt 13 70 33 PT1 4 Air Supply Port D C A B D C E 16 d 2005 07 08 SANDS...

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