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Safety functions 107
SSE with immediate STO
The operation of the SSE with immediate STO function is described in the time
diagrams and tables below. For configuration, see section
Without an encoder
A
Time to zero speed (parameter
): Time from the STO activation to the moment
when the safety function is completed, the SSE completed indication (parameter
) goes on and the acknowledgment becomes allowed. You must set this to the
estimated time in which the motor coasts to a stop from the maximum speed.
Step
Description
1
The SSE request is received (for example, from the I/O). The FSO activates the drive
STO function and starts a counter for time A. SSE active indication
) go on.
2
After time A has elapsed, the FSO module defines the motor as stopped and the SSE
completed indication goes on. The acknowledgement becomes allowed as soon as
the SSE request has been removed (step 3).
3
The SSE request is removed.
4
After the acknowledgement, the SSE and STO functions are deactivated, and the
control is given back to the drive. The indications
(
), and
) go off.
Drive STO state
& indication
3
SSE request
Motor speed
Time
A
4
2
SSE completed
indication
1
SSE state &
indication
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 ...