Care And Maintenance; Disassembly And Exchange - Aventics AS3-SV Instrucciones De Servicio

AVENTICS | AS3-SV | R412026750–BAL–001–AD | English
The following signal sequence results when a fault occurs (see
The device works fault-free at time 1. The signal output (41, 42=0) opens at time 2 if a fault (3)
occurs. The ERR LED shows a fault number via a flash consisting of long and short sequences.
You can analyze the error with the help of this error number. The device is switched off at time 4
and the fault is rectified. If the device is switched on at time 5 and the fault has been rectified, the
device is ready to operate again at time 6 after the self-test (7, approx. 1.5 s).
The following table shows an overview of flash codes with the corresponding cause of fault.
LED Flashes long Flashes short Error cause
ERR 1 1
1 2
2 4
4 3
3 8
4 2
3 9
4 1
3 4
2 9
3 1
LED displays
The LEDs flash briefly if the AS3-SV safety valve is supplied with 24 V.
The normal non-activated operating state (exhaust) is:
WRUN: illuminated
WIN 1, IN 2, OUT, ERR: off
The normal activated operating state (pressurize) is:
W
RUN, IN 1, IN 2, OUT: illuminated
W
ERR: off
The following table shows an overview of LED displays with the corresponding function.
LED Color Display type
RUN Green Permanently
illuminated
IN 1 Green Off
IN 1 Green Permanently
illuminated
IN 1 Green Flashes quickly
IN 1 Green Flashes slowly
IN 2 Green Off
IN 2 Green Permanently
illuminated
IN 2 Green Flashes quickly
IN 2 Green Flashes slowly
Out Green Off
Out Green Permanently
illuminated
Out Green Flashes slowly
ERR Red Off
ERR Red Flashes slowly
ERR Red Flashes quickly
Soft start
If the AS3-SV safety valve is activated, the operating line is pressurized. The time required for the
output pressure to reach approx. 50 % of the input pressure can be changed with the help of the
"soft start function". For this, you must turn the adjustment screw for the "soft start function"
(see –4).
1
If you turn the adjustment screw in a clockwise direction, the time required for the output
pressure to reach approx. 50 % of the input pressure is increased. Turn the adjustment screw in
an anti-clockwise direction to reduce the time.
The time interval is directly influenced by the volumes of the system that is currently
being filled. The time to reach 50 % of the input pressure is longer in systems with
larger volumes than in systems with smaller volumes.
In some applications, it may be the case that the AS3-SV fails and displays fault 39
(see chapter 11 Troubleshooting for a more detailed explanation).
You should avoid working with the maximum time for the soft start at low pressures to
prevent this fault occurring.
Furthermore, the AS3-SV should not be deactivated again when the soft start function
is being started up, but only in the fully pressurized state.
).
16
Supply voltage too low
Supply voltage too low
Cross-circuit between inputs S12 and S22
Supply voltage is detected as an AC voltage
Time monitoring during pressurization
Time monitoring during exhaust
Time monitoring during exhaust
Time monitoring during exhaust
Undefined level on input X2
Undefined level on input S12
Undefined level on input S22
Function
The AS3-SV safety valve is ready
Safety input 1/P not actuated
Safety input 1/P actuated
Time for synchronization exceeded
Second input S22 has not opened
Safety input 2/M not actuated
Safety input 2/M actuated
Time for synchronization exceeded
Second input S12 has not opened
AS3-SV safety valve in the non-activated state,
operating line is being exhausted
AS3-SV safety valve in the activated state
The AS3-SV safety valve is waiting for start signal X2
No error
See "Signal sequence when a fault occurs"
See "Signal sequence when a fault occurs"
8

Care and Maintenance

Maintain the AS3-SV safety valve
Damage to the product due to the use of solvents and aggressive cleaning agents!
The product can be damaged if washed with a solvent or aggressive cleaning agent. The
chemical resistance of the valve material to such products is not guaranteed. Solvents and
aggressive detergents will destroy the surface, labeling and seals of the product.
O
Make sure that no solvents and aggressive cleaning agents come into contact with
the valve.
Damage to the product due to washing at high pressures and temperatures!
The product will be damaged if you clean it with high pressure and/or at a high temperature.
O
Make sure that the product is not cleaned with high pressure and/or at a high
temperature.
No special care is required for the AS3-SV safety valve. Note the following if you would like to
clean the valve:
O
Check that all seals and plugs for the plug connections are firmly seated so that no humidity
can penetrate the AS3-SV safety valve during cleaning.
O
Only clean the AS3-SV safety valve using a slightly damp cloth. Only use water to do this and,
if necessary, a mild detergent.
Maintain the AS3-SV safety valve
Risk of injury while working on a running system!
Working while the system is running can cause major injuries from moving machinery.
O
Bring the system mode into a state in which working movements are no longer possible.
Wait until all moving machine parts come to a standstill, and protect the system against
being switched on.
In normal operation, the AS3-SV safety valve is maintenance-free. However to ensure the correct
function, the AS3-SV safety valve must be actuated at least once per month.
O
Activate the AS3-SV safety valve at least once per month.
The AS3 safety valve seals may age faster in aggressive ambient conditions. A damaged seal can
be recognized by parts of the seal visibly protruding from the housing gaps. Defective seals will
lead to pneumatic leaks.
O
Regularly check that the seals are in perfect order.
O
Immediately exchange the AS3-SV safety valve if the seals are defective.
O
Check regularly whether all plug connectors are firmly fitted.
O
Establish the maintenance intervals according to your ambient conditions and enter them in
the system-dependent maintenance plan.
O
Observe the system-specific maintenance intervals.
In case of any maintenance requirements, it is advisable to replace the entire AS3-SV safety
valve as this is the only way of ensuring a life cycle value for the entire valve.
The operator is responsible for determining the maintenance intervals.
9

Disassembly and Exchange

Danger of injury if disassembled under pressure or voltage!
Uncontrolled movement of the system components!
O
Make sure that the system is not under pressure or voltage when you disassemble the
AS3-SV safety valve.
Contamination during disassembly!
During disassembly, greases or lubricant may escape from the AS3-SV safety valve.
O
Make sure that the environment is not contaminated with greases or lubricant during
disassembly.
Disassemble the AS3-SV
1. Stipulate a signal on safety inputs 1/2 to deactivate the AS3-SV safety valve and to exhaust
the outlet line on outlet connection 2.
2. Switch off the 24 V DC supply.
3. Remove the connected plugs.
4. Switch-off the supply pressure and exhaust the supply line.
5. Remove the pneumatic lines.
6. Remove the valve fastening screws depending on the mounting type
This concludes the disassembly.
Exchange the AS3-SV
1. Disassemble the AS3-SV safety valve as described above.
2. Assemble a new AS3-SV safety valve as described in chapter "Assembly".
NOTICE
WARNING
WARNING
NOTICE
12