1.5.1.4.3.4 STO-SBC status register
The Safety Statusword indicates the current state of safety functions and Safety Digital Input Diagnostics shows
the state of the safety inputs.
Index
Name
Descriptions
0x6621 Safety Statusword
Subindex:
1 - Bit 1: STO status is the first bit of byte
2 - Bit 2: SBC status is the first bit of byte
STO/SBC status:
0: is not active
1: is active
0x2611 Safety Digital Input Diagnostics
Subindex:
1 - Input 1:
2 - Input 2:
Input 1/2:
0: Input is low
1: Input is high
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 introducing a delay with an external safety logic device such as a safety timer. This way an
equivalent of SS1 with time monitoring is implemented.
Attention
The STO-function does not provide electrical isolation from the mains supply. If electrical changes need
to be carried out on the system (e.g. modifying the motor cabling), the servo drive shall be completely
isolated from mains supply with a mechanical switch.
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