Transcript SynSeriesFa - Fluid Power Forums

Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, At Rest
(Next Slide)
1
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
(Next Slide)
2
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
3
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
4
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
5
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
6
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
7
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
8
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
9
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
10
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
11
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Extending
(Next Slide)
12
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
13
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
14
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
15
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
16
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
17
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
18
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
19
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
20
Synchronizing with Double Rod End Cylinders
If the Cylinders get out of sync
as they cycle they will be resynchronized as they return to a
positive stop or end of stroke
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
(Next Slide)
21
Synchronizing with Double Rod End Cylinders
When one Limit Switch is made
first it energizes Solenoid “c” and
sends pump flow to fully retract
both Cylinders
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
450 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
(Next Slide)
22
Synchronizing with Double Rod End Cylinders
When one Limit Switch is made
first it energizes Solenoid “c” and
sends pump flow to fully retract
both Cylinders
Limit Switch
Limit Switch
PG2
Counter
Balance
Valve
“c”
150 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
(Next Slide)
23
Synchronizing with Double Rod End Cylinders
When one Limit Switch is made
first it energizes Solenoid “c” and
sends pump flow to fully retract
both Cylinders
Limit Switch
Limit Switch
PG2
Counter
Balance
Valve
“c”
150 PSI
PG1
0 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Retracting
(Next Slide)
24
Synchronizing with Double Rod End Cylinders
Load Unevenly Balanced
Guided Platen
Limit Switch
“c”
Limit Switch
PG2
Counter
Balance
Valve
PG1
450 PSI
1,250 PSI
“a”
“b”
2,000 PSI
Maximum
Hydraulic Cylinders Series Circuit, Stopped
(Next Slide)
25
Series Cylinder Synchronizing Variations
Requires the same makeup
and re-synchronizing valves
Guided Platen
Requires same Counter
Balance Valves for running
away loads
To
Directional
Valve
Synchronizing Single Rod Cylinders, At Rest
(Next Slide)
26
Series Cylinder Synchronizing Variations
Guided Platen
Requires two makeup and
re-synchronizing valves
Requires same
Counter
Balance Valves
for running
away loads
To
Directional
Valve
Synchronizing Single Rod Cylinders, At Rest
(Next Slide)
27
Synchronizing with Cylinders in Series
Only works with Hydraulic cylinders
Requires added valves to re-synchronize at end of stroke
Can be mid stroke stopped without special valves
Must have bleed ports to assure filling of trapped fluid
area
Requires extra space for second rod travel
Each cylinder must have enough force to do the work
required by itself
When used for multiple cylinder applications each added
cylinder will lag slightly due to compressibility of fluid
(Repeat)
(Escape to Quit)
28