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80 Safety functions
SS1 with time monitoring (SS1-t)
The operation of the SS1 with time monitoring (SS1-t) is described in the time
diagrams and tables below. For configuration, see section
on page
With a safe speed estimate
A
SS1-t delay for STO (parameter
): Time after which the FSO activates the STO
function regardless of the motor speed.
B
): Speed limit for activating the drive STO function.
The safety function is completed and the SS1 completed indication (parameter
goes on.
C
Response time (depends on system configuration, see page
)
Drive STO state
& indication
SS1 request
Motor speed
Time
SS1 state &
indication
1
2
5
3
A
B
C
3b
SS1 completed
indication
SS1.14
4
- ->
Safe torque off (STO)
Summary of Contents for FSO-21
Page 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Page 4: ......
Page 16: ...16 Safety instructions ...
Page 34: ...34 Safety information and considerations ...
Page 52: ...52 Overview ...
Page 236: ...236 PROFIsafe ...
Page 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Page 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Page 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 286: ...286 PROFIsafe ...
Page 304: ...304 Installation ...
Page 400: ...400 Configuration ...
Page 488: ...488 Verification and validation ...
Page 506: ...506 Fault tracing ...
Page 514: ...514 Maintenance ...
Page 536: ...536 Technical data ...