Lenze i750 - Response Times of the Safety Unit

Response mes of the sa
fety unit
The overall system must be taken into account when determining the response me following
a safety funcon request.
Response me of encoder monitoring
Time required to detect faults caused by c
onnuous signal errors at the encoder interface. [ms]
Default seng 50
Parameterizable via:
0x2878:004
12/50/100
It must be evaluated for each applic
aon what minimum response me is
possible.
The longer the reacon me, the more the safe speed is ltered.
During dynamic processes (acceleraon, deceleraon), the safely evaluated
speed (nSD) lags behind the actual speed of the drive (nBD) (displayed in
0x287B:006). This me oset must be taken into account when reaching limit
values.
Response mes of safe SBC brake control
Response me from the detecon of the SBC safety funcon to the switch-o of the safe brake control [ms]
t
br
Delay me between request and acvaon of the brake control
Parameterizable via:
0x28E6:2
0 ... 30000
t
i
Processing me in drive-based safety sensor technology 4
Control X106 starts aer t
br
+ t
i
Test pulse interval and error response me [ms]
Test pulse interval, brake control 100
Error response me, min. me for error detecon and error triggering 200
FSoE communicaon response mes
Informaon on how to calculate the processing me and transmission me of the safety bus
can be found in the documentaon of the safety PLC used.
Response me to a status word from the safety module (input data) [ms]
T_Input
T_I
Internal transfer me of the FSoE data from the safety module to the safe control system 8
Tab. 1: Response me to status word
Response me to a control word (output data) [ms]
T_Output
T_O
Internal transfer me of the FSoE data from the safe control to the safety module 16
Tab. 2: Response me to a control word
If safety bus c
ommunicaon is disturbed, the system switches to the fail-safe
state aer the safety bus monitoring me (T_WD) has elapsed. Communicaon
via the safety bus is deacvated.
Funconal sa
fety
Technical data
Response mes of the safety unit
157