EL6224-0090 - Introduction
IO-Link Terminal, TwinSAFE Single Channel
The EL6224-0090 IO-Link terminal enables connection of up to four IO-Link devices, e.g. actuators, sensors or combinations of both. A point-to-point connection is used between the terminal and the device.
The terminal is parameterized via the EtherCAT master. IO-Link is designed as an intelligent link between the fieldbus level and the sensor, wherein parameterization information can be exchanged bidirectionally via the IO-Link connection.
The parameterization of the IO-Link devices with service data can be done from TwinCAT via ADS or via the integrated IO-Link configuration tool.
In the standard setting, the EL6224-0090 functions as a 4-channel input terminal, 24 VDC, which communicates if necessary with connected IO-Link devices, parameterizes them and, if necessary, changes their mode of operation.
IO-Link devices can be operated in 3-wire connection mode. The direct plug-in technique enables toolless construction.
With the aid of the TwinSAFE SC technology (TwinSAFE Single Channel) it is possible to make use of standard signals for safety tasks in any network or fieldbus. The standard functions and features of the I/Os remain available. The data from these TwinSAFE SC I/Os is fed to the TwinSAFE Logic, where they undergo safety-related multi-channel processing. In the Safety Logic the data originating from different sources is analyzed, checked for plausibility and submitted to a “voting”. This is done by certified function blocks such as Scale, Compare/Voting (1oo2, 2oo3, 3oo5), Limit, etc. For safety reasons, however, at least one of the data sources must be a TwinSAFE SC component. The remainder of the data can originate from other standard Bus Terminals, drive controllers or measuring transducers.
With the aid of the TwinSAFE SC technology it is typically possible to achieve a safety level equivalent to PL d/Cat. 3 in accordance with EN ISO 13849-1 or SIL 2 in accordance with EN 62061.