Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877
Operation
20
19
-0
7
17
5
Operation
Operating the device
1. Observe the safety instruction in the instruction manual.
2. Observe the information in the manual.
3. Use the device only with devices that are suitable for this safety application.
4. Correct any occurring safe failures within 24 hours. Take measures to maintain
the safety function while the device is being repaired.
5.1
Proof Test
This section describes a possible proof test procedure. The user is not obliged to use
this proposal. The user may consider different concepts with an individual determination
of the respective effectiveness, e. g. concepts according to NA106:2018.
According to IEC/EN 61508-2 a recurring proof test shall be undertaken to reveal
potential dangerous failures that are not detected otherwise.
Check the function of the subsystem at periodic intervals depending on the applied PFD
avg
in accordance with the characteristic safety values. See chapter 3.4.
It is under the responsibility of the plant operator to define the type of proof test and
the interval time period.
When the device is used in loop powered mode no dangerous failures can occur.
A proof test is not necessary. Nevertheless, we recommend a regular functional test of
the device, e. g. in combination with the proof test of the final element.
Danger!
Danger to life from missing safety function
If the safety loop is put out of service, the safety function is no longer guaranteed.
• Do not deactivate the device.
• Do not bypass the safety function.
• Do not repair, modify, or manipulate the device.