Sos – Safe Operating Stop - Festo CAMC-G-S3 Manual

2 Product description of safety module CAMC-G-S3
2.5.5 SOS – Safe Operating Stop
Application
The function described here implements the safety function SOS according to EN 61800-5-2.
Use the "Safe Operating Stop" (SOS) function if you must ensure in your application that
the motor position or the axle position is kept active and is monitored safely.
The SOS function is also triggered by the SS2 function and can also be used as an error
response (when other requested safety functions are violated). In this case, it is activated
via the factory setting and cannot then be deselected.
Function
When requesting the SOS safety function, after a defined time this monitors that the drive is regulated
within a specified position tolerance. If necessary, a quick stop can be requested in the basic unit in
advance, using which the drive is braked to idle. Even if the SOS safety function has been requested,
energy will continue to be supplied to the motor so that it can withstand an attack by exterior forces. In
the basic unit, the speed is regulated to zero.
Please note
As the signals of the position encoder can be static when idling, e.g. in the case of SIN/
COS tracking signals, the SOS function cannot be continuously requested without limits.
An axle movement is required in the meantime.
If SOS is requested for > 24 hours, the error 54-7 is triggered.
This means that the maximum idle time in the SOS function is limited to 24 hrs.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English 91