Lenze i750 - Position-Dependent Safe Speed (PDSS)

Posion-dependent sa
fe speed (PDSS)
This funcon monitors the speed of a drive as a funcon of the absolute posion along a
moon range.
This enables the use of a physically limited moon range without the use of mechanical
buers and limit switches.
The funcon can be parameterized as permanently acve.
DANGER!
Uncontrolled r
otaon of the motor possible if no safety rated encoder system is used.
Possible consequence: Death or severe injuries
▶
Use a safety rated encoder system to use this funcon.
The distance of the posion limit (0x28DE:002) t
o the forbidden zone must be
selected so large, taking into account all parameterized tolerances, that the
drive cannot collide with the forbidden zone under any circumstances.
Precondions
Homing must be executed. 4Sa
fe homing (SHom) ^ 138
Funconal descripon
Prohibited zoneProhibited zone
0x28DE:002 0x28DE:003
0x28DE:004 0x28DE:005
0x28DE:008
v
PDSS PDSS
s
Fig. 23: PDSS funcon
Funconal sa
fety
Safety funcons
Posion-dependent safe speed (PDSS)
136