Lenze i750 - Page 159

t
T_Sensor
T_InputFilter
T_Input
T_FSoE
T_SafetyPLC
T_FSoE T_Output
= T_Reaction error-free
T_S
T_I
T_Com
T_L
T_Com
T_O
= T_SFR
Lenze:
ETG:
PLC
EtherCAT master
Input device
Safety PLC
i750 ES
T_OutConn
T_InConn
Fig. 29: Maximum response me with err
or-free communicaon without Safe Brake Control (SBC)
t
M
3~
T_Aktor
T_A
T_Sensor
T_InputFilter
T_Input
T_FSoE
T_SafetyPLC
T_FSoE T_Output
= T_Reaction error-free
T_S
T_I
T_Com
T_L
T_Com
T_O
= T_SFR
Lenze:
ETG:
PLC
EtherCAT master
Input device
Safety PLC
i750 ES
T_OutConn
T_InConn
Fig. 30: Maximum response me with err
or-free communicaon with Safe Brake Control (SBC)
Calculaon of the maximum response me with error-free communicaon
Max. response me without SBC Max. response me with SBC
T_InConn 2 × T_S 2 × T_S
+ 2 × T_I + 2 × T_I
+ 2 × T_Com (3 × T_Com) + 2 × T_Com (3 × T_Com)
+ 2 × T_L + 2 × T_L
T_OutConn + 2 × T_L + 2 × T_L
+ 2 × T_Com (3 × T_Com) + 2 × T_Com (3 × T_Com)
+ 2 × T_O + 2 × T_O
+ 2 × T_A
= T_SFR = T_SFR
Response me in c
ase of communicaon interrupon
The FSoE watchdog me T_WD is included in the calculaon of the maximum response me
in case of communicaon interrupon.
The FSoE watchdog me T_WD can be calculated according to the formula in the ETG FSoE
protocol specicaon.
The processing mes in the individual subsystems and the processing me of the
communicaon are included in this calculaon. In addion, a reserve of 20% is added.
Funconal safety
Technical data
Calculaon of the maximum response mes
159