SE6 Servo Drives with Safety Functions

The most commonly used safety feature in drive controllers is the STO function – Safe Torque Off. Based on this, the SS1 – Safe Stop 1 – function can also be implemented.

But what if more advanced safety functions are required?

STOBER provides the answer with its SE6 motor controller, which offers a broader range of integrated safety features.

Below is a comparison between a traditional safety system (diagram on the left) and the new SE6-based solution (diagram on the right).

The SE6 solution requires significantly fewer components in the application, resulting in cost reduction and simplified system architecture.

Below is a description of the safety functions implemented by the SE6 servo drives in accordance with DIN EN 61800-5-2:

• STO – Safe Torque Off: safe shutdown of torque

• SS1 – Safe Stop 1: motor braking followed by activation of STO

• SS2 – Safe Stop 2: motor braking followed by activation of SOS

• SLS – Safely-Limited Speed: safely limited motor speed

• SSR – Safe Speed Range: safe speed range

• SDI – Safe Direction: safe rotational direction

• SOS – Safe Operating Stop: similar to STO, but torque is not switched off

• SLI – Safely-Limited Increment: safely limited incremental movement

• SPL – Safely-Limited Position: safely limited position

• SBC – Safe Brake Control: safe brake actuation

• SRL – Safe Restart Lock: prevention of unintended restart

• SLS-M – Safe Limited Speed – monitoring

• SSR-M – Safe Speed Range – monitoring

• SDI-M – Safe Direction – monitoring

• SOS-M – Safe Operating Stop – monitoring

• SLI-M – Safely-Limited Increment – monitoring

• SLP-M – Safely-Limited Position – monitoring

• SBT – Safe Brake Test: safe brake function testing

For more information, visit www.demero.pl or refer to the SE6 Safety Technology Manual.