98 Safety functions
Step
Description
1
The SLS request is received.
The motor speed is above the SLS limit positive (B). The
FSO starts to monitor the SLS time delay (C) (parameter
).
2
The drive starts to ramp down the motor speed.
The drive (parameter
23.13
or
23.15
)
defines the deceleration ramp until the speed reaches the SLS limit positive (B).
The FSO starts the SLS monitoring when the motor speed is in the middle of the SLS
limit and the SLS trip limit (see also section
How to fine-tune when monitoring is started
on page
). The SLS indication (parameter
,
)
goes on.
3
The motor speed reaches the SLS limit positive (B).
3-6
The drive limits the motor speed, but if the motor speed still reaches the SLS trip limit
positive, the FSO activates the SSE function. See section
page
4
The FSO starts the SLS monitoring at the latest here, that is, after the SLS time delay
(C) has elapsed.
Note
: If the motor speed is above the SLS trip limit after the SLS time delay (C) has
elapsed, the FSO module activates the SSE function. For more information, see
section
on page
.
5
The SLS request is removed, but the SLS monitoring is still on (acknowledgement
method is manual or from a safety PLC).
Note
: If automatic acknowledgement is used, the SLS monitoring is also ended.
6
The SLS function is acknowledged and FSO stops the SLS monitoring. The SLS
indication (parameter
) goes off.
Summary of Contents for FSO-12
Page 1: ... OPTIONS FOR ABB DRIVES FSO 12 safety functions module User s manual ...
Page 4: ......
Page 12: ...12 Table of contents ...
Page 36: ...36 Safety information and considerations ...
Page 136: ...136 Safety functions ...
Page 196: ...196 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 200: ...200 PROFIsafe ...
Page 326: ...326 Start up ...
Page 386: ...386 Dimension drawings ...