SMC Networks RS2H Series, Operation Manual

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9. Troubleshooting
Detail of trouble Cause Countermeasure
Operation is not
smooth 1. Lubrication failure
・
Clean components and apply specified grease to them.
2. Piston rod deformation
・
Replace cylinder and adjust load and position.
3. Insufficient air pressure
・
Supply an appropriate amount of pressure.
Output is decreasing 1. Piston seal air leakage
・
Replace piston seal.
2. Rod seal air leakage
・
Replace cylinder
3. Air pressure decrease
・
Review the amount of pressure and capacity of the pressure source.
4. Insufficient air flow
・
Maintain and/or clean air passages. Air flow might have decreased
due to deformation and/or foreign matter.
5. Incorrect cylinder
mounting position
・
Mount cylinder correctly to avoid excessive strain.
6. Piston rod deformation
・
Replace cylinder and adjust load and position.
7. Lubrication failure
・
Refer to “Operation is not smooth” above.
Piston operates too
fast 1. No speed controller
・
Use a speed controller appropriate to the cylinder size.
2. Precise adjustment of
speed controller is
insufficient
・
Select an appropriate speed controller to secure required operating
speed referring to speed controller flow rate characteristic curves.
Piston operates too
slowly 1. Directional control valve
is too small
・
Use a larger size of valve.
2. Large resistance of
equipment in the system
・
Use valves and other equipment of appropriate sizes. Do not forget
to check piping and fitting sizes. Use appropriate piping and
equipment on the outlet side.
Cylinder occasionally
stops operating 1. Very low speed
operation
・
Operate cylinder within the specified range of speed. Very low speed
operation reduces the pressure difference between inlet side and
outlet side of the cylinder to almost zero, which may lower sealing
ability and result in malfunction.
2. Defective equipment
other than cylinder
・
Examine all the equipment used in the system one by one.
Cylinder stops
operating 1. Piston seal damaged
・
Replace piston seal if air comes out from exhaust port of valve
continuously.
2. Defective equipment
other than cylinder
・
Examine all the equipment used in the system one by one.
3. Insufficient air pressure
・
Supply an adequate amount of pressure.
Piton rod deformed or
broken 1. High speed operation
・
Replace cylinder. Operate it within the specified range of speed. High
speed operation may result in cylinder deformation or breakage due
to impact force.
2. Abnormal external force
applied
・
Replace cylinder after removing mechanical interference, unbalanced
load or excessive load which may cause cylinder deformation or
breakage.
3. Impact of pallet while
the lever is standing
erect
・
For a lever with built-in shock absorber type, do not allow the next
pallet to collide while the lever is standing erect. Otherwise, all
energy will be applied to the cylinder body.
4. External force applied
from the opposite side
when the lever is locked
・
For cylinders with locking mechanism, do not apply an external
force from the opposite side when the lever is locked.
5. Shock absorber
adjustment problem
・
Adjust the shock absorber to the optimum absorption position to stop
work pieces gently.
Cylinder speed cannot
be controlled with
speed controller 1. Unsuitable speed
controller
・
Select an appropriate speed controller for the desired operating
speed.
2. Defective speed
controller
・
Replace speed controller.
Cylinder stick-slip
operation
1. High load factor
・
Increase operating pressure.
・
Use cylinder with larger bore.
2. Meter-out circuit not
used
・
Control operating speed with a meter-out circuit. Meter-in circuit
may make operation unstable at low pressure and speed.