YASKAWA iC9200 Series

132 HB700 | CPU | PMC921xEx | en | 24-04
Deployment CPU iC921xM-FSoE
iC9200 Series
Response times > There is an error
Possible single errors
Max. response time on error
5.12.2 There is an error
On error
, it is assumed that a watchdog responds and triggers the corresponding error
response. Possible causes include errors in the system, incorrect runtime information in
the documentation of the standard system or an extension of the runtime beyond the
value used in the calculation by changing the configuration of the standard system. The
total response time in the error-free case increases by the maximum duration of the
possible single errors:
■ Discrepancy error in safety SDI. Here, the discrepancy time must also be taken into
account: (TI
DIS
)
■ A single error occurs in the safety SDI. Here the possibly larger max. response time
during an error (TI
OFDT
) is to be considered with the max. response time in error free
case (TI
WCDT
): (TI
OFDT
- TI
WCDT
)
■ Once or permanent interrupted communication between safety SDI and the safety
CPU. The FSoE watchdog time of the Safety SDI and the configured cycle time of the
PLC must be considered: (TI
FSoEWD
+ T
CL
)
■ Once or permanent interrupted communication between safety SDO and the safety
CPU or failure of the safety CPU. Here the watchdog time of the safety SDO and
acknowledge time of the safety SDO must be considered: (T
O
FSoEWD
+ TO
DAT
)
■ A single error occurs in the safety SDO. Here the possibly larger max. response time
during an error (T
O
OFDT
) is to be considered with the max. response time in error free
case (TO
WCDT
): (TO
OFDT
- TO
WCDT
)
T
maxOF
= T
maxNF
+ MAX((TI
DIS
), (TI
OFDT
- TI
WCDT
), (TI
FSoEWD
+ T
CL
), (TO
FSoEWD
+ TO
DAT
),
(TO
OFDT
- TO
WCDT
))
⮫‘Designations’
...page 135
T
maxOF
Max. response time on error (max One Fault).
T
maxNF
Max. response time without errors (max No Fault).
TI
DIS
With 2-channel evaluation discrepancy time, otherwise 0 (DIScrepancy).
TI/TO
OFDT
Max. response time on error (One Fault Delay Time).
TI/TO
WCDT
Max. response time without errors (Worst Case Delay Time).
TI/TO
FSoEWD
Configured FSoE watchdog time (FSoE WatchDog).
T
CL
Cycle time of the safety CPU.
TO
DA
T
Max. acknowledgement time (Device Acknowledgement Time).
For plant design sensor and actuator run times are to be taken into account:
T
maxOFSA
= T
SensorDL
Y
+ T
maxOF
+ T
ActuatorDLY
⮫‘Designations’
...page 135
T
maxOFSA
Max. response time on error with sensor and actuator
(max One Fault SensorActuator).
T
SensorDLY
Delay time of the sensor (Sensor DeLaY).
T
maxOF
Max. response time on error (max One Fault).
T
ActuatorDLY
Delay time of the actuator (Actuator DeLaY).