CAN in Automation GmbH (CiA)
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 CANopen Safety Chip CSC01 for
safety-relevant Applications up to SIL3,
pre-certified by TÜV Rheinland
A consortium at CAN in Automation GmbH (CiA) commissioned SYS TEC with
the development of the CSC01 CANopen safety chip. The CSC01 is designed
for use in safety-relevant applications up to SIL3 (Safety Integration
Level) according to IEC 61508 and Safety Category 4 according to EN
954-1. It was tested and pre-certified by TÜV Rheinland (Report No:
968/EL 215.01/04 of July 30, 2004). CSC01 is based on a RENESAS 16-bit
micro-controller. It includes the CANopen Safety Protocol in accordance
with the CiA standard DS304 and can be integrated by the user into its
own safety-compliant devices. Customer-specific software components can
be loaded later into the CSC01 flash. Accordingly, the CSC01 is used in
a number of applications such as, for example, emergency stop buttons,
safety relays and light-curtains or generally as CANopen interfaces.
The international IEC 61508 standard requires SIL 3 and
single-processor solutions to have a diagnostic coverage level of
>99 % within a defined safety cycle time. This high degree of
diagnostic coverage requires extensive error detection procedures
including but not limited to Flash, RAM, CPU register and the
Op-code. The particular challenge of the project led to the
integration of these error detection mechanisms. The complete
development, including accompaniment of the testing by TÜV was done by
SYS TEC.
Project Phases:
- Creation of the safety design
- Testing of the safety design by TÜV Rheinland
- Hardware and software development
- Verification and validation of the hardware and software
- Testing of the CSC01 by TÜV Rheinland
Particularly close collaboration with the customer and the approval
authority was implemented in this project. This was of particular
significance to effective and successful project progression. With the
experience gained in this project, SYS TEC is predestined to carry out
device development based on CSC01 and to take on other safety-relevant
development projects as well.
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