Post on 14-Sep-2014
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
Design Procedure Pneumatic Controls1. Write down the required sequence
2. Make a Displacement-step diagram and mark the piston motions
3. Provide a "Typical Configuration" for each piston.4. Make connections according to the sequence5. Complete the Function diagram
6. Detect "Double Command", If exists, modify your design
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
2. Write the motion sequence by using abbreviated notation
Design Procedure Cascade method1. Make a Displacement-step diagram and control chart [Function diagram]
7. Drawing output bus line to each group and consist cascade chain6. Drawing cylinders and final control elements
5. If checkback signal is changes the group, write in lower side and changes the motion, write in the top side
4. Determine checkback signal
3. Divide the sequence to groups in such a way that a letter appears only once in a group
8. Connects from port 2 of checkback signal to e1, e2, e3… and connects between port 1 and previous output[interlock]
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits Example
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
1. Make a Displacement-step diagram and control chart [Function diagram]
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
A+ , B+ B- , A-A+ , B+ B- , A-
2. Write the motion sequence by using abbreviated notation
3. Divide the sequence to groups in such a way that a letter appears only once in a group
A+ , B+ , B- , A-A+ , B+ , B- , A-
Group 1 Group2
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
4. Determine checkback signalA Ba0 a1 b0 b1
A+ A- B+ B-
A+ B+ B- A- A+ A+ B+ B- A- A+
5. If checkback signal is changes the group, write in lower side and changes the motion, write in the top side
Starta0
b0
b1
a1
Starta0
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
7. Drawing output bus line to each group and consist cascade chain
6. Drawing cylinders and final control elements
A Ba0 a1 b0 b1
A+ A- B+ B-
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
7. Drawing output bus line to each group and consist cascade chain
A Ba0 a1 b0 b1
A+ A- B+ B-
S1S1
S2S2
e2e2e1e1
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Design of Power Fluid Circuits
A Ba0 a1 b0 b1
S1
S2
1.1 2.1
1.3 2.2
1.6 2.5
0.1
1.4 2.3
1.2START
1.0 1.4 2.2 2.0 1.3 2.3
a0
a1b0
b1
1 3
24
1 3
24
1 3
24
1 3
2
1 3
2
1 3
2
14 12 14 12
14 12
14
1412
12
8. Connects from port 2 of checkback signal to e1, e2, e3… and connects between port 1 and previous output[interlock]
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Cascade chain
S1S1S2S2S3S3S4S4
e2e2
e3e3
e4e4e1e1
Pneumatics _ Advanced Level Pneumatics _ Advanced Level
Kunsan Vocational Training InstituteKunsan Vocational Training Institute
Cascade chain[added dual press valve]S1S1S2S2S3S3S4S4
e2e2 e3e3 e4e4e1e1
공유압기초 순수공압
케스케이드 - 3자동화설비과
케스케이드 밸브케스케이드 밸브 (( 리밋 스위치 리밋 스위치 연결연결 ))S1S1
S2S2S3S3S4S4
e2e2
e3e3
e4e4e1e1
공유압기초 순수공압
케스케이드 - 4자동화설비과
케스케이드 밸브케스케이드 밸브 (( 입출력 직렬연결입출력 직렬연결))S1S1
S2S2S3S3S4S4
e2e2
e3e3
e4e4e1e1
1. 1. 경제적경제적이다이다 . .
2. 2. 제어 제어 신뢰성신뢰성이 높다이 높다 . . 3. 3. 작동 시퀀스가 복잡하면 작동 시퀀스가 복잡하면 배선배선이 복잡하고 이 복잡하고 제어제어
회로회로의 작성이 어렵다의 작성이 어렵다 . . 4. 4. 제어에 걸리는 제어에 걸리는 스위칭 시간스위칭 시간이 길어진다이 길어진다 . . 5. 5. 제어회로에 문제가 발생했을 경우 제어회로에 문제가 발생했을 경우 문제 해결문제 해결이 이
어렵다어렵다 . . 6. 6. 제어 그룹의 개수가 제어 그룹의 개수가 3~43~4 개개인 경우에 주로 사용인 경우에 주로 사용
제어 그룹의 개수가 많아지면 제어 그룹의 개수가 많아지면 stepperstepper 방식이 방식이
사용된다사용된다 . .
공유압기초 순수공압
케스케이드 - 9자동화설비과
케스케이드 회로의 특징케스케이드 회로의 특징