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Functional Safety HiC2871A
Operation
5
Operation
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.
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
5.1
Proof Test Procedure
A proof test is not necessary as these loop powered devices do not have any
dangerous failures. However, we still recommend a proof test, e. g. together with
the proof test of the entire system. With the following instructions the correct
performance of the basic functionality can be tested.
It is under the responsibility of the plant operator to define the type of proof test
and the interval time period.
Check the settings after the configuration by suitable tests.
Equipment required:
• Digital multimeter without special accuracy
Use for the proof test of the intrinsic safety side of the device a special digital
multimeter for intrinsically safe circuits.
If intrinsically safe circuits are operated with non-intrinsically safe circuits, they
must no longer be used as intrinsically safe circuits.
• Power supply set to values according to the table below
14
maintain the safety function while the device is being repaired.
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