2.11.2
Existing error
In the presence of an error, it is assumed that a time monitoring 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 max-
imum duration of the possible single errors:
n
Discrepancy error in System SLIO safety SDI. Here, the discrepancy time must also
be taken into account: (TI
DIS
)
n
A single error occurs in the System SLIO 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
)
n
Once or permanent interrupted communication between System SLIO safety SDI and
the safety PLC. Here the Sync Manager monitoring time of the System SLIO safety
SDI and the configured cyclic time of the control must be considered: (TI
PSTO
+ T
CL
)
n
Once or permanent interrupted communication between System SLIO safety SDO
and the safety PLC or failure of the safety PLC. Here the Sync Manager monitoring
time of the System SLIO safety SDO and acknowledge time of the System SLIO
safety SDO must be considered: (TO
PSTO
+ TO
DAT
n
A single error occurs in the System SLIO safety SDO. Here the possibly larger max.
response time during an error (TO
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
ECSMWD
+ T
CL
), (TO
ECSMWD
+ TO
DAT
),
(TO
OFDT
- TO
WCDT
))
Chap. 2.11.4 ‘Designations’ page 62
T
maxOF
- Max. response time in the presence of an error (
max O
ne
F
ault)
T
maxNF
- Max. response time in the case without errors (
max N
o
F
ault)
TI
DIS
- With 2-channel evaluation discrepancy time, otherwise 0 (
DIS
crepancy)
TI/TO
OFDT
- Max. response time in the presence of an error (
O
ne
F
ault
D
elay
T
ime)
TI/TO
WCDT
- Max. response time in the case without errors (
W
orst
C
ase
D
elay
T
ime)
TI/TO
ECSMWD
- Configured EtherCAT Sync Manager monitoring time
(
E
ther
C
AT
SM W
atch
D
og)
T
CL
- Configured cycle time of the safety PLC (
C
yc
L
e)
TO
DAT
- Max. acknowledgement time of the System SLIO safety modules
(
D
evice
A
cknowledgement
T
ime)
For plant design sensor and actuator run times are to be taken into account:
T
maxOFSA
= T
SensorDLY
+ T
maxOF
+ T
ActuatorDLY
Chap. 2.11.4 ‘Designations’ page 62
T
maxOFSA
- Max. response time in the presence of an error with sensor and actuator
(
max O
ne
F
ault
S
ensor
A
ctuator)
T
SensorDLY
- Delay time of the sensor (
S
ensor
D
e
L
a
Y
)
T
maxOF
- Max. response time in the presence of an error (
max O
ne
F
ault)
T
ActuatorDLY
- Delay time of the actuator (
A
ctuator
D
e
L
a
Y
)
Possible single errors
Max. response time on
error
VIPA System SLIO
Product description
Response time > Existing error
HB300 | SM-S | 02x-1SD10 | en | 20-02
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