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170 Safety functions
SSE with emergency ramp
This applies when the SSE function has been configured as “Emergency ramp” (with
ramp monitoring or time monitoring).
A
SLS trip limit positive (parameter
,
,
B
or
)
C
Response time (depends on system configuration, see page
)
D
Zero speed limit (parameter
): Speed limit to define the
motor as stopped. The safety function is completed and the SSE completed indication
(parameter
) goes on. The acknowledgment becomes allowed.
SLS trip limit (A)
Step Description
1
The SLS request is received, the motor speed is below the SLS limit positive (B) and
the FSO starts the SLS monitoring. The SLS indication (parameter
,
,
or
) goes on.
2
The motor speed goes above the SLS limit positive (B).
3
The motor speed reaches the SLS trip limit positive (A). The SLS active indication goes
off.
4
After time C has elapsed, the FSO activates the SSE function and the drive starts the
ramp down the motor speed. SAR0 parameter
defines the ramp.
5
The motor speed goes below the SLS limit positive (B) and the SLS active indication
goes on.
6
The motor speed reaches the zero speed limit (D). The motor has stopped and the
FSO opens the drive STO circuit. The SSE completed indication goes on.
7
The SLS request is removed. The SLS monitoring is still on (acknowledgement method
is manual or from a safety PLC).
SLS indication
SLS request
Motor speed
Time
A
8
1
7
B
4
3
C
SSE state &
indication
SSE completed
indication
2
D
6
5
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 ...