摘要:
A method for redundantly operating an automation system comprising one or more user computers, at least two gateway computers and a plurality of programmable logic controllers, the user computers and the gateway computers being connected to a first bus system of a first type and the gateway computers and the programmable logic controllers being connected to a second bus system of a second type, as a result of which the programmable logic controllers can be controlled and/or monitored by the user computers via one of the gateway computers, wherein to set up a communication link between one of the user computers and one or more of the programmable logic controllers, the user computer contacts a virtual gateway computer having a virtual identifier for all gateway computers of the automation system, which virtual gateway computer establishes a physical communication link to a selected one of the gateway computers.
摘要:
A method for redundantly operating an automation system comprising one or more user computers, at least two gateway computers and a plurality of programmable logic controllers, the user computers and the gateway computers being connected to a first bus system of a first type and the gateway computers and the programmable logic controllers being connected to a second bus system of a second type, as a result of which the programmable logic controllers can be controlled and/or monitored by the user computers via one of the gateway computers, wherein to set up a communication link between one of the user computers and one or more of the programmable logic controllers, the user computer contacts a virtual gateway computer having a virtual identifier for all gateway computers of the automation system, which virtual gateway computer establishes a physical communication link to a selected one of the gateway computers.
摘要:
The invention pertains to a plain porous bearing for motors and transmissions with a circular bearing bore that displays, distributed alternatingly across the bearing bore, highly compressed at least approximately closed-pore areas and slightly compressed, open-pore areas, where the bearing bore diameters of the highly and slightly compressed areas are at least approximately identical. Also provided is a procedure and device for production of the bearing.
摘要:
A component having a layer system situated on the component is described, for increasing the resistance to wear of the component. The layer system in this context includes a phosphate layer and particles of solid lubricants, the layer system being free of any binding agent. A method for producing such a component is also described.
摘要:
Chromium-free, low-zinc, corrosion-inhibiting pigment mixture (A) comprising (a1) 30% to 60% by weight of at least one calcium hydrogen phosphate pigment, (a2) 15% to 45% by weight of at least one amorphous, calcium-modified silicon dioxide, (a3) 5% to 25% by weight of at least one calcium borosilicate pigment, and (a4) 1% to 15% by weight of at least one zinc salt of an organic nitro compound with the proviso that the zinc content of (A) does not exceed 10% by weight; process for preparing it, and its use.
摘要:
The invention pertains to a plain porous bearing for motors and transmissions with a circular bearing bore that displays, distributed alternatingly across the bearing bore, highly compressed at least approximately closed-pore areas and slightly compressed, open-pore areas, where the bearing bore diameters of the highly and slightly compressed areas are at least approximately identical. Also provided is a procedure and device for production of the bearing.
摘要:
People conveyor (2) having an endless people transportation band (4) and an endless handrail (6), a glass balustrade (8) arranged laterally to the transportation band (4) and supporting the handrail (6), and a profile (10, 12) having an U-shaped channel (38) for engaging the glass balustrade (8) and comprising an Illumination cavity (44), wherein a plurality of LEDs is arranged in the illumination cavity (44).
摘要:
The invention pertains to a plain porous bearing for motors and transmissions with a circular bearing bore that displays, distributed alternatingly across the bearing bore, highly compressed at least approximately closed-pore areas and slightly compressed, open-pore areas, where the bearing bore diameters of the highly and slightly compressed areas are at least approximately identical. Also provided is a procedure and device for production of the bearing.
摘要:
A sintered plain bearing for motors and gear drives, having a running surface formed by a bearing bore and capable of having lubricant applied to it from lubricant reservoirs in the bearing, in which the bearing bore has, alternatingly distributed over the circumference, high-compaction small-pore running surfaces and axially extending low-compaction open-pore lubricant reservoirs. Lubrication is improved, especially in the initial phases of operation, by the fact that the lubricant reservoirs are constituted by channel structures having at least two longitudinal channels, and that at least in some of the channel structures, some of the channel crests remaining between adjacent longitudinal channels are in contact with the shaft received by the bearing bore in order to transfer lubricant.