Safe Brake Control - SBC

Note: Using the SBC function while running the motor may damage the brake due to mechanical stress. During normal operation, it is recommended to activate STO-SBC after the motor has come to a halt, e.g. by using SS1 instead of STO.

This is a function mentioned in IEC 61800-5-2. This function provides a safe output signal to control an external brake.

• In stand-alone mode, SBC can only be used together with STO

• SBC can be activated separately via FSoE

• The time delay between SBC and STO can be configured via object 0x6661:1 Brake time delay.

• SBC can not be mapped to a digital input

• SBC is always activated first when used in combination with STO

SBC Timing diagram

Parameters related to SBC

Index	Parameter Name	Explanation
0x6661:1	Brake time delay	The time for the software to wait for a brake change between released and engaged in both directions
0x2641:2	SBC	Defines if an STO request triggers SBC