96 Safety functions
Note:
If drive modulation is lost when SLS function is activated and the motor speed
is below SLS limit, SLS indication is on and STO is not activated due to loss of drive
modulation.
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. The drive limits the motor speed so that it does not go
above the SLS limit positive.
2
If the motor speed reaches the SLS trip limit positive (A), 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” (parameter
), see section
on
page
).
3
The SLS request is removed. The SLS monitoring is still on (acknowledgement method
is manual or from a safety PLC) (parameter
, configured as Manual_Safebus).
Note
: If automatic acknowledgement is used, the SLS monitoring is also ended.
4
The SLS function is acknowledged and the FSO stops the SLS monitoring. The SLS
indication (parameter
,
,
or
) 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 ...