Safety functions 113
SLS reaction if modulation is lost with Modoff delay time - modulation returns
before modoff delay
The operation of the SLS function in case the modulation of the drive is lost during the
deceleration ramp and the modulation returns before the Modoff delay time has
runout with Modoff delay time selected (parameter SLSx.05 is set to Modoff delay
time) is described in the time diagram and table below.
B
Actual motor speed (coasting after modoff)
C
SLS trip limit
D
SLS limit
Motor speed
Time
1
6
5
4
3
2
B
Drive modulation
SLS request
SLS monitoring
SLS indication
SLSx.06 Modoff time
delay monitoring
SLSx.04 time
delay monitoring
C
D
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 ...