Festo CMTT-AS S1 Series, Description, Page: 30 / 46

No. Question Relevant Done
... c1) Actuation of the system emergency stop: Is the drive brought to a
standstill in the desired manner (stop 0, stop 1, SBC)? Yes
o
No
o
o
... c2) Is a restart after an emergency stop prevented in the safety relay
unit? This means that when the emergency stop button is pressed and
the enable signals are active, no movement occurs in response to a
start command until acknowledgement has taken place via the
“Restart” input. Yes
o
No
o
o
... c3) Actuation of the safety sub-function STO. If only one of the
assigned inputs #STO-A or #STO-B is activated: Is the safety sub-func-
tion STO executed immediately? Does the STA output remain at the
low level? Is the error “Discrepancy time violation” logged in the
CMMT-AS once the discrepancy time has elapsed? Yes
o
No
o
o
... c4) Actuation of the safety sub-function SBC. If only one of the
assigned inputs #SBC-A or #SBC-B is activated: Is the assigned safety
sub-function executed immediately? Does the SBA output remain at
the low level? Is the error “Discrepancy time violation” logged in the
CMMT-AS once the discrepancy time has elapsed? Yes
o
No
o
o
... c5) Does the safety relay unit detect a fault if SBA/STA do not switch
to the high level when the safety sub-function is requested via 1 chan-
nel? Yes
o
No
o
o
... c6) Only when linking multiple CMMT-AS and connecting the diagnost-
ic outputs: Does the safety relay unit detect a fault if the SBA/STA
linkage is interrupted at a particular point and the corresponding dia-
gnostic output does not switch to the high level on one CMMT-AS
when the safety sub-function is requested via 1 channel? Yes
o
No
o
o
Tab. 12 Questions for validation in accordance with EN ISO 13849-2 (example)
7 Operation
The safety functions are to be checked at adequate intervals for proper functioning. Selecting the type
of test and time intervals within the stated time period is the responsibility of the operator. The check
is to be conducted such that flawless functioning of the safety device can be verified in interaction
with all components. Time period for cyclical test
è 9.1 Technical data, safety equipment.
The CMMT-AS is maintenance-free during its period of use and specified service life. The test interval
varies from one safety sub-function to another:
–
STO: No test has to be carried out during the period of use, but we recommend evaluating STA
whenever the sub-function is requested to ensure maximum diagnostic coverage and the highest
safety-related classification.
Operation
30 Festo — CMMT-AS-...-S1 — 2018-10a