Product category:
Smaller-Sized PLCs
News Release from: TTControl - TTTech Off-Highway | Subject: TTC 200
Edited by the Engineeringtalk Editorial
Team on 19 February 2008
Off-highway controller is certified to
SIL 3
The TTC 200 is the first ECU in the worldwide off-highway market that allows applications to be created up to Safety Integrity Level 3.
TUV Nord has certified TTControl's TTC 200 electronic control unit (ECU) according to the international IEC61508 standard The TTC 200 is the first ECU in the worldwide off-highway market that allows applications to be created up to Safety Integrity Level (SIL) 3
This article was originally published on Engineeringtalk on 21 Dec 2006 at 8.00am (UK)
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IEC61508 is an international standard for functional safety of electrical, electronic and programmable electronic safety-related systems.
The TTC 200 stand-alone version fulfils SIL 2 requirements; two TTC 200 ECUs in a TTP network have been the first to achieve SIL 3 certification.
"Our comprehensive certification process has shown that TTC 200 provides a maximum level of reliability".
"It is thus best suited for off-highway vehicles in on-road traffic", states Dr Tomislav Lovric, Project Leader at TUV Nord, when summarising the test results.
The TTC 200 is a programmable, general-purpose ECU for off-highway vehicles.
It was designed from the outset to meet the high requirements of safety-critical applications and to reduce failure rates.
Its compliance with IEC61508 enhances development processes, resulting in higher product quality so that the costs of defective and idle machinery can be kept to a minimum.
The TTC 200 contains an independent watchdog CPU that communicates with the main CPU.
The watchdog CPU operates redundantly, monitoring activities, detecting faults, and shifting the vehicle to a safe state in case of failure.
Both CPUs monitor each other and the watchdog CPU is able to switch off the power supply in order to stop safety-critical applications.
Examples of some current applications that use TTC 200 are ice resurfacing machines, snow groomers and mobile work machines.
The safety-critical functions of the vehicles are carried out by the TTC 200, ensuring safe working conditions for users and people in the immediate vicinity of the machines.
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