Cascading (Cas) - Lenze i950 Commissioning Manual

Safety functions

Cascading (CAS)

19.20 Cascading (CAS)
This function allows for the synchronised shutdown of an entire drive network.
Preconditions
As source for the cascading request, the SD-In4 input must be parameterised.
•
0x21240x2124, 4: SD-In4
As an active input for the "Emergency stop" function and the input delay, a value ≤ 10 ms
•
must be parameterised for SD-In4.
As executing stop function, the "Safe torque off (STO)" function must be parameterised.
•
Safe Emergency Stop (SSE)
As restart behaviour of the drive after executing
•
restart" must be parameterised.
The control of the SD-Out1 output via a parameterised safety bus must be inhibited.
•
bus
The plausibility check rejects other settings until the plausibility check is para-
meterised correctly.
If the cascading safety function is used in connection with special operation, "SS2" must be
•
parameterised as stop function in the operation mode selector (OMS).
The STO stop function will trigger the "Cascading" function. Activation by means
of the enable switch (ES) is not possible.
Description of the principle
SD-In4
Fig. 80: CAS function
With 0x2125:0010x2125:001, the time period is shown, which elapses from switching the SD-
Out1 output to the OFF state to recording the OFF state at the SD-In4 input.
If, after a stop, the time period "0 ms" is shown, another safety function has triggered the
•
stop via the cascade.
The time period is shown until the next system acknowledgement takes place.
•
Activation of the function
The function is activated by parameterisation of the SD-In4 input as source for a cascading
request (0x21240x2124, 4:
Parameter
Address Name / setting range / [default setting]
0x2124 CAS: Quelle SD-In
• Read only
0 Deactivated
4 SD-In4
0x2125:001 CAS: Cascading: CAS: Stop delay
• Read only: x ms
416
Safe inputs
0x28A3:001
^ 376
Safe Torque Off
0x2892:0010x2892:001
i950 #1
SD-Out1
SD-In4
SD-In4).
(STO), "Acknowledged
i950 #2 i950 #n
SD-Out1 SD-Out1
SD-In4
Info
Safety