11
Response times
Calculation of response times
Manual – MOVISAFE
®
CS..A Safety Card
88
11.1.3
Safe communication
The response times for the safe communication always relate to the safe protocol and
not to the external interface of the safety card. All response times must be multiplied
by the factor 1.002.
Calculation factor (formula symbol)
Calculation specification response time
Input processing time via safe process out-
put data
(T
_InputProcessing_F-PA
)
2 × T
_Task
+ T
_Sys
Response time selection (F-DIx after F-PE) T
_InputProcessing_F-DIx
+ T
Sys
Response time (F-PA after F-DOx)
T
_InputProcessing_F-PA
+ T
Sys
11.1.4
Selection of a drive safety function via a safe digital input in independent operation
All response times must be multiplied by the factor 1.002.
Calculation factor
Calculation specification response time
STO
T
_InputProcessing_F-DI
+ T
_Sys
+ brake application time
1)
(8706.15)
SOS
T
_InputProcessing_F-DI
+ T
_Sys
SS1(b)
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(b) monitoring delay t
2
(8706.9) + brake application time
1)
(8706.15) + Actual_speed/SSx(b) delay a (8706.10) + SSx(x) jerk time
2)
t
3
(8706.11)
SS2(b)
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(b) monitoring delay t
2
(8706.9) + Actual_speed/SSx(b)
delay a (8706.10) + SSx(x) jerk time
2)
t
3
(8706.11)
SS1(c)
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(c) delay t1 (8706.8) + brake application time
1)
(8706.15)
SS2(c)
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(c) delay t1 (8706.8)
SSx(b) with SLI
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(b) monitoring delay t
2
(8706.9) + Actual_speed/
SSx(b)delay a (8706.10) + SSx(x) jerk time
2)
t
3
(8706.11)
SSx(c) with SLI
T
_InputProcessing_F-DI
+ T
_Sys
+ SSx(c) delay t1 (8706.8)
SLS
T
_InputProcessing_F-DI
+ T
_Sys
+ monitoring delay t
2
(8706.23) + (Maximum speed - limit
speed (8706.24))/delay a (8706.27) + SSx(x) jerk time
2)
t
3
(8706.28)
SSR
T
_InputProcessing_F-DI
+ T
_Sys
+ monitoring delay t2 (8706.53)
SDI
T
_InputProcessing_F-DI
+ T
_Sys
SLI
T
_InputProcessing_F-DI
+ T
_Sys
SLA
T
_InputProcessing_F-DI
+ T
_Sys
1) If SBC release (8706.14) = no, then the brake application time = 0
2) With ramp monitoring = linear, the jerk time = 0
11.1.5
Selection of a drive safety function via safe communication
The response times for the safe communication always relate to the safe protocol and
not to the external interface of the safety card. All response times must be multiplied
by the factor 1.002.
Calculation factor
Calculation specification response time
STO:
•
Via F-PA
T
_InputProcessing_F-PA
+ 2 × T
_Sys
+ brake application time
1)
(8706.15)
24842532/EN – 04/2018
