Lenze E94AYAE SM301 - Manual (Page 48)

Safety engineering
Safety functions
General information
1
l
48 EDS94AYAE EN 7.0
1.3 Safety functions
1.3.1 General information
1.3.1.1 Stop functions
The stop functions are distinguished according to the cause of release:
ƒ Standard stop (simple stop)
– Release by a safe input with the parameterised STO, SS1 or SS2 functions
– Release by activating the bits STO, SS1 or SS2 bits via the safety bus.
– In special operation the standard stop can be avoided by using the enable switch.
ƒ Emergency stop
– Release by a safe input with the parameterised "Safe stop emergency" (SSE)
function.
– Release by activating the SSE bit via the safety bus.
– STO or SS1 can be set as emergency stop function to be executed.
– In special operation, the emergency stop cannot be avoided.
ƒ Error stop
– Release as response to an error.
– In special operation, the error stop cannot be avoided.
Codes
Parameter: Name: Data type: Index:
C15205 SSE: Safe stop emergency function UNSIGNED_8 9370
d
= 249A
h
Selection of the stop function for emergency stop
Selection list (Lenze setting printed in bold) Information
0 STO Safe torque off
1 SS1 Safe stop 1
þ Read access } Write access o Controller inhibit o PLC-STOP o No transfer
1.3.1.2 Priorisation
Stop functions with priority influence the sequence of subordinated functions already
started.
ƒ STO
The STO function has the highest priority over all other functions. Functions already
started (e.g. SS1 or SS2) are aborted and the drive is switched off.
ƒ SS1
The SS1 function has priority over SS2. Considering the set stopping time for SS1 and
SS2 (C15305) and the SS1 mode (C15306 as of SM301 V1.3), the drive is switched to
torque−free operation.
ƒ Monitoring functions
The monitoring functions have equivalent priorities. They can be executed at the same
time.