Safety functions 77
STO with speed limit activated SBC
This safety function requires that you use an encoder in the safety application.
The operation of the STO with speed limit activated SBC is described in the time
diagram and table below. For configuration, see section
on page
A
STO SBC speed (parameter
): Speed limit at which the FSO activates the SBC
function (brake).
B
Zero speed with encoder (parameter
): Speed limit at which the motor has
stopped, the safety function is completed and the STO completed indication (parameter
) goes on. The acknowledgment becomes allowed.
C
Restart delay after STO (parameter
): Time from the STO activation to the
moment when the acknowledgment becomes allowed. With this parameter, you can
allow a restart of the drive before the motor has stopped (fly-start). You can use this
feature only in certain applications. This parameter is relevant only when an external
request activates the STO function.
Drive STO state
& indication
STO request
Motor speed
Time
STO completed
indication
1
6
5
SBC output
3
B
4
A
C
2
Содержание FSO-21
Страница 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Страница 4: ......
Страница 16: ...16 Safety instructions ...
Страница 34: ...34 Safety information and considerations ...
Страница 52: ...52 Overview ...
Страница 236: ...236 PROFIsafe ...
Страница 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Страница 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Страница 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Страница 286: ...286 PROFIsafe ...
Страница 304: ...304 Installation ...
Страница 400: ...400 Configuration ...
Страница 488: ...488 Verification and validation ...
Страница 506: ...506 Fault tracing ...
Страница 514: ...514 Maintenance ...
Страница 536: ...536 Technical data ...
Страница 538: ...538 Dimension drawings 3AXD50000018513 ...