Lenze i950

19.12 Safely-Limited Posion (SLP)
The funcon monitors the lower and upper posion limit.
Precondions
The following funcon must be executed:
•
Se
t upper
posion value.
•
Set lower posion value.
•
Safe homing (SHOM)
Funconal descripon
t
0
SLP observed
P
STO/SS1/SS2
0x28D2:004
...
0x28D2:001
0x28D3:004
...
0x28D3:001
0x28D4:004
...
0x28D4:001
Fig. 77: SLP funcon
For operaon within the upper limit value, the SLPpos observed status is used. 0x28D3:000
F
or operaon within the lower limit value, the SLPneg observed status is used. 0x28D2:000
The upper and lower posion limits parameterised are monitored at the me of the request,
see SLPx observed status bit.
The status can
•
be assigned to the safe output (0x28BB:0010x28BB:001 or 0x28BB:0020x28BB:002).
•
be reported via the safety bus (0x28B9:0010x28B9:001 or 0x28BB:0020x28B9:002).
This funcon can be executed during normal operaon and special operaon. See 4Oper
a-
on mode selector (OMS) . ^ 434
Up to four absolute posion setpoint pairs can be parameterised and monitored at the same
me.
In
connecon with this funcon, please also observe the informaon with
regard to safe homing in chapter Safe homing (SHOM).
Via a safe input, if the corresponding parameter is assigned to the safe input.
Acvaon of the
funcon
A data telegram is sent to the inverter via the safety bus. See chapter "Safe network interfa-
ces". ^ 441
Behaviour of the funcon in the event of an error
If the Plim posion limit is exceeded during the monitoring process,
•
an err
or message is triggered.
•
a stop funcon for the parameters set
-
0x28D2:0010x28D2:001 ... 0x28D2:0040x28D2:004 the lower absolute posion limit
set
-
0x28D3:0010x28D3:001 ... 0x28D3:0040x28D3:004 the upper absolute posion limit
set
is triggered.
Safety funcons
Safely-Limited Posion (SLP)
422