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Safety functions 133
Step Description
1
The SSE request is received (for example, from the I/O). The FSO starts a counter for
time B. SSE active indication
) goes on.
2
After time E has elapsed, the drive starts to ramp down the motor speed. SAR0
parameter
defines the deceleration ramp.
3
The motor speed goes below the SBC speed limit (A), the FSO activates SBC function.
The FSO starts counters for times C and D.
Note
: You can define an extra delay (parameter
, not shown in the figure) before
the FSO activates the SBC function. This affects also the STO activation (step 4).
3b
If the drive has not ramped down fast enough when time B has elapsed, the FSO
activates the STO function. See section
on page
for more
information on how to configure the STO function.
4
After time C has elapsed, the FSO activates the drive STO function. STO active
indication parameter
) goes on when STO is activated.
5
The SSE request is removed.
6
After time D has elapsed, the safety function is completed, the SSE completed
indication goes on and the acknowledgement becomes allowed as soon as the SSE
request has been removed (step 5).
7
After the acknowledgement, the SSE, STO and SBC functions are deactivated and the
control is given back to the drive, which is allowed to modulate again. The indications
),
(
), and
) go
off.
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 ...