Setting The Speed And Cushioning - Aventics RMC Serie Instrucciones De Servicio

Risk of injury or damage
A cylinder that is operated without speed control can reach high speeds, and may cause
injury or machine breakdown.
Make sure that the cylinder is always operated with speed control.
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Note:
AVENTICS | RCM | R402002349-BDL-001-AC
7.2

Setting the speed and cushioning

WARNING
The cushioning, i.e. the impact of the piston at the end covers of the
cylinder, is set with the cylinder cushioning screw (1).
When the cushioning is being set, the cylinder must be loaded as
in normal service and the speed must be increased gradually to
the desired operating speed.
Normally the speed is controlled by throttling the exhaust air from
the cylinder chambers with a throttle check valve.
Set the piston speed and cushioning as follows:
1. Make sure that the pressure is zero to both chambers and then
increase the pressure slowly to the desired working pressure.
2. Fully tighten the cushioning screws (1) in both end covers, then
loosen them one half (
3. Open the throttle check valve slightly.
4. Increase the piston speed step-by-step, opening the cushioning
screws at every step so that the piston is cushioned softly at
the stops in the end covers.
5. Finally, operate the cylinder at the desired operating speed
(measure the speed if necessary) and make final adjustments
to the cushioning.
If the cushioning is correctly set, the piston will reach its end
position without bouncing or hitting the end cover. If in doubt
and for critical applications, the cushioning can be optimized
with guidance from AVENTICS.
½
) turn.
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Commissioning