A hazard cannot be considered ‘safe’ until all sources of hazardous energy are isolated
Protection against fluid power hazards must be designed to the same requirements as electrical systems.
Pneumatic and hydraulic systems require the same dual channel architecture and high diagnostic coverage as an electrical system would to achieve functional safety up to Category 4, SIL 3 or PLe.
✅ High risk fluid power applications up to Cat. 4 PLe
✅ Dual NC contacts are directly and positively driven open by the element in the transition to output state
✅ Fault condition possible from non-synchronous motion of independent elements
✅ Mechanical Bias to exhaust downstream fluid power
Fluid power through hydraulics and pneumatics is a reliable and highly accurate method to apply, move and remove loads. With all systems, a level of risk is presented as fluid power holds a load in the transition between motions; the primary motion to apply the load and the secondary motion to remove that load.
If hydraulic and pneumatic pressure is lost during this transition, failure modes can result in unexpected and unpredictable motion and if operators are nearby, serious injury.
The most common causes of failure in pneumatic and hydraulic systems are:
💧 Hydraulic fluid or internal wear generated contamination
💧 General abrasion
💧 Heat aging
💧 Moisture and condensation
💧 Poor lubrication
How can unpredictable and unexpected motion be prevented with safety valve technology?
To meet Category 4, ISO 13849-1 states that the safety related parts of the control system (SRP/CS) then change SRP to SRP/CS shall be designed such that a single fault in any SRP does not lead to a loss of safety function…
ISO 4413 & 4414 detail how functional safety is the advised method to mitigate risks associated with fluid power processes. Whilst fluid power has been a reliable and powerful method to provide motion in industrial processes, when things go wrong, they can be unpredictable.
Fortress Fluidsentry offers a range of market-leading safe pneumatic and hydraulic isolation products designed for Category 4 Performance Level e applications.
The Fortress Fluidsentry range is designed with redundancy in mind for every component.
ANSI B11.26 states how pneumatic and hydraulic systems shall be designed such that any failure to a system will result in that system moving to a ‘safe state’.
The fluid power for hydraulic and pneumatic energy often comes from one supply line.
Isolating the entire supply unnecessarily can be expensive and a huge inefficiency to productivity. Safety valves can be used to zone your supply lines via a control system to vent and exhaust downstream pressure to the local area surrounding the hazard.
Localised isolation maximises productivity whilst one zone is ‘out of action’ to minimise the effect of downtime.
Fortress Fluidsentry products use patented technology to ensure pressure is safely exhausted and vented through redundant means in cases where an exhaust channel is blocked.
The manifold within all Cat. 4 PLe valves have a series ported cross-linked manifolds to provide the additional surety that your are in the safest hands.
The Highest Level of Fluid Power Safety
To meet Category 4, ISO 13849-1 states that the safety related parts of the control system (SRP/CS) then change SRP to SRP/CS shall be designed such that a single fault in any SRP does not lead to a loss of safety function…
ISO 4413 & 4414 detail how functional safety is the advised method to mitigate risks associated with fluid power processes. Whilst fluid power has been a reliable and powerful method to provide motion in industrial processes, when things go wrong, they can be unpredictable.
Fortress Fluidsentry offers a range of market-leading safe pneumatic and hydraulic isolation products designed for Category 4 Performance Level e applications.
Mechanical Bias to Fail-safe
The Fortress Fluidsentry range is designed with redundancy in mind for every component.
ANSI B11.26 states how pneumatic and hydraulic systems shall be designed such that any failure to a system will result in that system moving to a ‘safe state’.
The fluid power for hydraulic and pneumatic energy often comes from one supply line.
Isolating the entire supply unnecessarily can be expensive and a huge inefficiency to productivity. Safety valves can be used to zone your supply lines via a control system to vent and exhaust downstream pressure to the local area surrounding the hazard.
Localised isolation maximises productivity whilst one zone is ‘out of action’ to minimise the effect of downtime.
Fortress Fluidsentry products use patented technology to ensure pressure is safely exhausted and vented through redundant means in cases where an exhaust channel is blocked.
The manifold within all Cat. 4 PLe valves have a series ported cross-linked manifolds to provide the additional surety that your are in the safest hands.
Watch Fluidsentry in Action
Fluidsentry | Monitored safety valves for fluid power
Fluidsentry systems can be retrofitted into existing Hydraulic and Pneumatic based systems to enable the highest level of safety function to Cat. 4, SIL 3, PLe.
Watch our quick animation to learn more about the dangers of fluid power and how fluid power safety can allow you to rest easy.
Watch Fluidsentry in Action
Fluidsentry | Soupapes de sécurité surveillées pour l’énergie hydraulique
Cette vidéo montre notre nouvelle gamme de soupapes de sécurité surveillées pour l’énergie hydraulique.
Easily link safe isolation systems to networked controls
Communicate safety functions over PROFIsafe & CIP safety
We are experts in providing safety solutions for automation
Contact us for tailored guidance and solutions for your machinery safety applications.
Bolt Module (BM, BMS) – Power Interlocking with a Mechanical Bolt
The Bolt Module is a form of Power Interlocking and can be used to prevent mechanical rotation of components used for isolation of pneumatic, hydraulic, or electrical energy.
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