Reliability of the pneumatic components used in safety systems values to use in application of EN ISO 13849-1
Reference: ISO 19973 - Pneumatic Fluid Power - Assessment of component reliability by testing

Definition
is the number of cycles until 10% of the components fail dangerously.

Introduction
In pneumatic, mechanical and electromechanical technology, the life and reliability of components generally depends on wear linked to movements. Their life is also strongly affected by the working conditions, especially the following:

• Compressed air quality and conditions
• Lubricant compatibility with gaskets
• Temperature
• Environmental factors as such dust, gas and fluids. .

It is vital for the component manufacturer's requirements to be complied with, otherwise the failure parameters are not valid.

Product operating conditions are shown in Metal Work’s General Catalogue.

Unless specified otherwise in the catalogue, compressed air must be class 3-4-3, in accordance with ISO 8573-1.

Product family	[cycles]
Cylinders
ISO15552 cylinders, round cylinders, series RNDC, polyurethane gaskets	30.000 km corresponding to75x106 cycles with a reference stroke of 200mm
ISO 15552 cylinders, round cylinders, series RNDC, low-temperature NBR and FKM gaskets	15.000 km corresponding to 37x106 cycles with an average stroke of 200mm
ISO6432 cylinders, SSC cylinders, compact cylinders, liner cylinders, stopper cylinders, polyurethane gaskets	60x106 cycles
ISO6432 cylinders, SSC cylinders, compact cylinders, liner cylinders, compact guided cylinders, low-temperature NBR and FKM gaskets	30x106 cycles
Flat Two cylinders	15 x106 cycles
Rodless cylinders	10.000 km corresponding to 25x106 cycles with a reference stroke of 200mm
Hydraulic brakes, series BKK, integrated hydraulic brake	5 x106 cycles
Other standard cylinders in the catalogue	Greater than or equal to 15 x106 cycles
Handling
Grippers series P1, P2, P3, P4, P7, P8, P9, P10, P11	5 x106 cycles
Rotary actuators series R1, series R3	10 x106 cycles
Slides series S10, series S11, series S12, series S13	10 x106 cycles
Valves
Mechanical valves: series VME, series 70 MEV	2 x106 cycles
Manually-operated valves: series 70 MAV, series PEV pedal-operated, two-handed safety operation	1 x106 cycles
Pneumatic valves: series 70 PNV, series Mach 16 MPV, series Mach 11 MPV, series NAMUR, series ISO5599 IPV, series Mach 18 MPV	50 x106 cycles
Solenoid valves: series 70 SOV, series NAMUR, series ISO5500 ISV, series Mach 18 MSV, series Mach 11 MSV, series Mach 16 MSV, series Multimach, series HDM, series CM, series PIV.M, series PIV on base and in line, CNOMO, series Minimach, series PLT-10, series SOV-L	50 x106 cycles
Field bus (electronic only, without valves): HDM+AS-interface, HDM+Profibus, input Profibus-DP, Profibus-DP dedicated Mach 16, Profibus-DP / Interbus-S / Can-open / Device –net for Multimach	100 x106 cycles
Units
The working life is calculated as the number of opening/closing cycles for valves and regulators, and the number of downstream pressure changes from 6.3 to 0 bar for the other components.
Filters, filter-purifiers, driers: series Skillair, Bit, New Deal, ONE	Infinite
Regulators and filters-regulators: Series Skillair, Bit, New Deal, ONE, GS, Skilltronic, Regtronic, RML, RMC, RMS	10 x106 cycles
Lubricators: Series Skillair, Bit, New Deal	50 x106 cycles
V3V circuit shutoff valves: series Skillair, New Deal, ONE	10 x106 cycles
Progressive starters, APR: Series Skillair, ONE	10 x106 cycles
Pressure switches series PS	5 x106 cycles
Accessories
MRF and RFL	50 x106 cycles
VSR	50 x106 cycles
VNR	50 x106 cycles
STP	50 x106 cycles
VCS	50 x106 cycles
VOR	50 x106 cycles
Pneumatic logic	50 x106 cycles

Concesio, 23^rd December 2009