Wiki

Dimension of a component from the center of the first post to the center of the second post.

Electromechanical safety switches equipped either with an integrated actuator (type 1) or with a separate actuator (type 2).

Area in or around a machine in which a person is exposed to the risk of injury or damage to health. The hazard can either be present permanently during the intended use of the machine (movement of hazardous moving parts, arc during a welding phase, etc.) or occur unexpectedly (unintentional, unexpected start-up, etc.).

The fence height corresponds to the total height of the protective fence from the ground to the top edge of the fence element. Fence height = ground clearence + fence height.

The fighter profile is a horizontal connection elements of the frame, above the door wing. This connection between the fighter profile and the hinge and stop mullions increases the rigidity of the door portal.

The frequency converter changes the mains frequency of the AC voltage (three-phase frequency) from 50 Hz to an adjustable value. The speed of the connected motor depends directly on the three-phase frequency and can therefore be controlled by the frequency converter. The door can therefore be infinitely slowed down and sped up and functions such as “creep speed” or “slow approach” are made possible.

The grid height is the height of a grid element. Grid height + ground clearence = fence height.

Height from the ground to the lower edge of the grid elements. Ground clearence + lattice height = fence height.

Laminated safety glass consists of at least two panes of glass with a safety film inserted between them. This means that there is no risk of injury if the glass breaks, as the pane does not shatter despite countless cracks.

In the case of laminated safety glass with sound insulation, a 1 mm thick layer of cast resin or a sound insulation film is used instead of the safety film. Very good sound insulation values can be achieved in both cases.

The bolt tongue mechanically guides the actuator when it is retracted into the safety switches. The part of the latch mounted on the door frame consists of a protruding latch tongue in a guide, a handle and the actuator. The latch holder and the safety switches are attached to the mullion side. When closed, the latch holder absorbs the forces acting on the door that would otherwise act on the switch and the actuator and could damage these components.

Load-carrier monitoring is an electromechanical safety device to prevent the door leaf from falling by triggering a signal if a load-carrying chain breaks. Brühl doors with load-carrier monitoring always have several load-carriers and are designed so that if one load-carrier fails, the load-carrier monitoring system triggers a signal and the other load-carrier holds the leaf in position. Furthermore, the load-carrier monitoring system can register a malfunction of the traversing unit, causing the sash to stop immediately.

Machine safety colloquially describes protective measures on machines and systems with the aim of avoiding dangerous situations and their risks. The topic of machine safety is considered from two perspectives. For the manufacturer of the machine, it is important to place safe machines on the market on the basis of the Machinery Directive and to take safety measures into account during the design phase. The operator of a machine or system is responsible for ensuring safe working with and on the machine to protect his employees.

Tampering is the deliberate overriding or bypassing of protective facilities and their components. Safety switches and other safety devices must be designed in such a way that the protective function cannot be changed or bypassed by hand or with a simple aid. Simple aids are Nail, pieces of wire, adhesive strips, etc. The following cannot be bypassed by simple means (BGI 575): dismantling parts, turning the safety switches away from their protective position, using a second actuator, bridging the contacts, etc. In terms of design, consideration should be given to ensuring that machines and systems can be operated easily and as intended despite protective facilities.

The average speed corresponds to an average value from the various travel speeds.

Open height corresponds to the actual passage height of doors from the floor to the lower edge of the door sill.

Open width corresponds to the actual passage width for doors.

With inward-opening doors, the leaves open towards the machine side. This may be necessary if, for example, there is not enough space on the outside. It must be checked whether this is permissible in the respective safety concept. This option is not available for escape doors. They must always open outwards in the direction of escape.

As standard, the wing doors are designed so that the door wing opens outwards (i.e. towards the operator side).

Discrete level that specifies the ability of safety-related parts of a control system to perform a safety function under foreseeable conditions (definition according to standard EN 13849). Put simply, the performance level is a measure of the reliability of a safety function. A distinction is made between the performance level to be achieved (PLr; the “r” stands for “required”) and the “actual” PL that is actually achieved. There are five performance levels that stand for different residual risks.

Position switches are used to detect the position of moving protective facilities. As soon as a position switch is used as a safety-relevant component, it is referred to as a position switch with a safety function or a safety-related position switch. In this case, the switching element must contain at least one positive break contact.

Protective facilities protect people, production goods and the environment from hazards.

A protective measure is a means of reducing the risk. There are protective measures on the design side and protective measures when operating the system.

Safety Integrity Level describes the probability that a safety-related system fulfills the required safety functions under certain conditions.

The Safety Light Barrier (SLB) detects a person or object and avoids potentially dangerous situations.

Screen printing panels are plywood panels with a non-slip surface that are often used in vehicle construction and for hard-wearing flooring.

Slip classes determine the slip resistance or surface properties of floor coverings, for example.

The stop direction is determined by the stop side. The rebate side of a door is the side to which the door hinges are attached. A distinction is made here between DIN left (left stop) or DIN right (right stop).

The tear plate is a resilient and non-slip textured sheet. Rolling gives the sheet material its almond-shaped “tears”. However, the underside remains smooth. The arrangement of the tears is designed to provide a high level of slip resistance and ensure optimum liquid drainage.

Spot-welded meshes consist of drawn wires that are electrically connected to each other at the crossing points. They are very stable.