Lenze i950

19.7 Safe Maximum Speed (SMS)
The safety
funcon monitors the compliance with the safe maximum motor speed set.
WARNING!
A safety-rated encoder system must be used.
Without an enc
oder, this safety funcon cannot be used.
▶
Apply a safety-rated encoder system to use this funcon.
Funconal
descripon
Nmax
t
0
SLS1
n
SMS
-Nmax
STO/SS1/SS2
Fig. 67: SMS funcon
Acvaon of the
funcon
The
funcon can only be acvated via parameterisaon.
The
funcon is acvated by a value > 0 in 0x28B0:0010x28B0:001.
Behaviour of the funcon in the event of an error
An error message is triggered if:
•
The speed e
xceeds the maximum speed Nmax set in 0x28B0:0010x28B0:001.
One of the error stops parameterised in 0x28B0:002(0x28B0:002) is
iniated:
•
Sa
fe Torque O (STO)^ 396
•
Sa
fe Stop 1 (SS1)^ 401
•
Safe Stop 2 (SS2)^ 404
Parameter
Address Name / seng range / [default seng] Info
0x28B0:001 SMS: SMS: Maximum Speed Nmax
•
R
ead only: x rpm
0x28B0:002 SMS: SMS: Reacon (n>Nmax)
•
Read only
0 STO
1 SS1
2 SS2
0x28B1 SMS monitored: Output
•
Read only
0 Deacvated
1 SD-Out1 posive logic
2 SD-Out1 negave logic
Safety funcons
Safe Maximum Speed (SMS)
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