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Safety functions 189
Step Description
1
The SDI positive request is received (for example, from the I/O). The motor rotates into
the forbidden direction (in this case, negative). The drive starts to decelerate the motor
speed to zero speed. The drive (parameter
23.13
or
23.15
) defines the deceleration
ramp.
The FSO module starts a counter for time A. The SDI active indication is off.
2
The motor speed reaches zero and the motor stops. The FSO starts the SDI monitoring
according to the SDI tolerance limit degree (not shown in this figure, see section
with correct rotation direction
on page
). The SDI active indication goes on.
2b
The FSO starts the SDI monitoring at the latest here, that is, after the SDI delay (A) has
elapsed.
Note
: If the rotation direction of the motor is not correct after the SDI delay (A) has
elapsed, the FSO module activates the SDI monitoring. If the motor rotates to the
forbidden direction more that the SDI tolerance limit degree (parameter
, not
shown in this figure) allows, the FSO activates the SSE function and the motor coasts
to a stop (in this case the SSE function has been configured as “Immediate STO”). See
section
on page
3
The user gives a new speed reference. The motor starts to rotate into the correct
(positive) direction.
3b
Zero speed limit (B) reached. If the SSE function was activated at 2b, the STO
acknowledgement becomes allowed and the FSO starts the SDI monitoring.
4
The SDI request is removed and the FSO stops the SDI monitoring. The SDI function is
acknowledged (automatic SDI acknowledgement) and the SDI active indication goes
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 ...