Festo CAMC-G-S3 Manual page 240

A Technical appendix
Sensor type
13: Terminate safety
function (restart)
1) To EN ISO 13849-1
2) To EN 61800-5-2
Tab. A.17 Safety reference data for digital inputs
Please note
– The following data on measures and DC is based on the data of the standard EN ISO
13849-1.
– The manufacturer's specifications must be used for a safety-related assessment of
the sensors.
– The DC values given are only valid when the specified measures and the specified
additional conditions are complied with.
– Fault exclusions are possible according to the relevant standards, for which the
required conditions must be permanently guaranteed.
Measure
Cyclical test pulse created by dynamically
changing the input signals.
Cross-comparison of input signals with dy­
namic test if short-circuits cannot be de­
tected (for multiple inputs/outputs).
Cross-comparison of input signals with im­
mediate and intermediate results in the
logic (L) and temporal as well as logic pro­
gram sequence monitoring and detection
of static failures and short circuits (for
multiple inputs/outputs).
Plausibility check, e.g. use of normally
open and normally closed contacts.
Tab. A.18 Measures for digital inputs
240
Switch type
1 N/O contact
DC
90
90
99
99
Classification category, PL
Without allocation of test
pulse Cat. 1, PL c
With allocation of test pulse
Cat. 2, PL d
Comment
Only effective when alloca­
tion of test pulses is active.
Without allocation of test
pulses.
Cyclical change of the input
signals required, e.g.
through the process or regu­
lar actuation.
Only with allocation of test
pulses.
Only when using antivalent
signals.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
1)
Classification
2)
SIL
SIL 1
SIL 2
Use
Cross-circuit mon­
itoring for 1-chan­
nel sensors.
Monitoring of
2-channel
sensors.
Monitoring of
2-channel
sensors.
Monitoring of
2-channel
sensors.