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User Manual
Appendix A
GFK-2843A
Jan 2020
VersaSafe system
71
VersaSafe island
Each VersaSafe island consists of one VersaSafe module with integrated
safety logic (IC220SDL963) and up to 16 distributed VersaSafe modules
(e.g., IC220SDL543, IC220SDL753). The module with integrated safety
logic is referred to as the island node, while the modules without safety
logic are referred to as remote devices or satellites. Satellite is the preferred
term to describe these modules and is used in this document.
The satellites and the IC220SDL963 are assigned to an island using island
numbers that are specified in the parameterization tool. The satellites are
numbered in the order they are assigned in VersaConf Safety.
A-2.2
Network and controller requirements
The VersaSafe system does not place any special requirements on the standard control
system. However, it must be able to perform the following tasks:
Network:
•
Deterministic network
Controller:
•
Fast enough that it can meet time expectations for the response time
•
Sufficient memory to store configuration and parameter data records
•
Data consistency is ensured over 24 words
Important
Application code for integration of VersaSafe in PACSystems RX3i/RXi are available in PAC
Machine Edition. Refer GFK-2735 'VersaSafe Integration Guide' for support on integration.
A-2.3
Safe input and output devices
Safe input and output devices form the interface to the connected I/O devices. The devices
control contactors or valves, for example, and/or read the input status of connected
safety-related sensors.
The internal structure of the devices enables component failures, interruptions in
transmission or the absence of data to be detected and reported immediately.
Even errors in the wiring or internal device errors can be detected. Errors are indicated via
the process image of the devices, the functional blocks, and the device LEDs. They can be
evaluated by the user.
The safe I/O devices are from the VersaPoint product range. Their design and interfaces
correspond to standard VersaPoint I/O devices. This means that no additional installation
effort is required.
The devices are parameterized using the VersaConf Safety software according to the
safety function that is to be performed. The parameterization and wiring of the inputs and
outputs depends on the application (e.g., single-channel or two-channel). For more
detailed information on the parameterization options, please refer to the user manual for