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4. Commissioning
Checking the valve-cylinder combination
WARNING
When pressurizing or repressurizing the valve termi-
nal under the following conditions:
– with safety start-up valve
– when there is an electrical signal
supply the auxiliary pilot air separately (3 to 8 bar).
The auxiliary pilot air must reach its full level immedi-
ately after being switched on, otherwise the slow press-
ure build-up of the overall supply will have no effect
with cylinders actuated as follows:
– by means of single solenoid valves
– by means of double solenoid valves which are
The effects of slow pressure build-up when there is an
electrical signal are shown in the table below.
Separately
Pressure
supplied auxiliary
increase in
pilot air
overall supply
taken behind safety
slow
start-up valve
taken in front of
slow
safety start-up valve
CPV... 9811d
(slow pressure build-up) and
(e.g. after EMERGENCY STOP)
switched to flow-through during the pressureless
phase.
Pressure
increase in
auxiliary pilot
air (12/14)
slow
fast
Moment when
Movement of
valve switches
cylinder
over
after pressure
fast
increase at (1)
before pressure
slow
increase at (1)
4-7
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