The SGDV-OSA01A is a Safety Module for the Yaskawa AC Servo Drives Sigma-5 Series

19th September 2012
Posted By : ES Admin
Machine movements represent a major source of hazard for operators and staff members carrying out maintenance tasks. Typical situations requiring safe machine states occur during commissioning, in set-up mode, troubleshooting and when operating or maintenance personnel are required to approach the machine.
For functional safety the safety module SGDV-OSA01A for the Sigma-5 series servo drives enables engineers to realise safe and cost-effective automated motion applications.

•The Sigma-5 servo drive functionality allows for a smooth integration of the mandatory legal safety standards.
•The STO function is implemented by default in all Sigma-5 series servo amplifiers. The safety functions SS1, SS2 and SLS are integrated by using the SGDV-OSA01A safety module.

With the coming-into-effect of the standard EN ISO 13489 1:2008 ‘Safety of machinery - Safety-related parts of control systems’ the construction of safe machines will now be assessed either according to the performance level (PL a - e) or according to the safety integrity level (SIL 1 - 4). The security relevant functions for variable speed drives are defined in the standard IEC 61800-5-2.

The Sigma-5 servo drives are certified by TÜV Süd and comply with the following safety standards:

When opening the door, the motion controller outputs, for example a “creep speed”. The Sigma-5 safety module monitors that the set limited speed of the motor is not exceeded (SLS = Safely Limited Speed). If the speed is not inside the limit values after an adjustable response time, the power supply for the motor is safely interrupted immediately by the STO function.

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