ABB ACS880 User Manual page 25
Safely-limited speed without the encoder interface (option +q966) for multidrives
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Also See for ACS880:
- Firmware manual (764 pages) ,
- Manual (646 pages) ,
- Quick start up manual (146 pages)
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Example 4: Time monitoring active
In this example, parameter SLSx.05 is set to Monitoring active. The time diagram below
describes the operation of the SLS function when modulation is lost during the deceleration
ramp.
Motor speed
B
Actual motor speed (coasting after modoff)
C
SLS trip limit
D
SLS limit
E
Last valid speed estimate of FSO
E
B
Option description 25
C
D
Time
SLS request
SLSx.04 time
delay monitoring
STO.14 delay
Drive modulation
STO active
SLS indication
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