HIMA F6217 Input Module

HIMA F 6217: 8 fold analog input module, safety related for current inputs 0/4...20 mA, voltage inputs 0...5/10 V, with safety isolation resolution 12 bits tested according to AK6/SIL3.

The module contains a redundant, safety related processor system. Because of this, all the tests are executed directly on the module. The main test routines are:

- Linearity of the AD converters

- Cross talking between the 8 input channels

- Function of the input filters

- Function of the IO bus communication

- Selftests of the microcontrollers

- Tests of the memories

Notes to the safety related operation and use

Screened cables have to be used for the field input circuits, twisted leads are recommended. If it is sure that the environment of the transmitter up to the module is free from interferences and the distance is relatively short (e. g. inside a cabinet) then the cabling can be performed without screened cables or twisted leads. However, the immunity from interference to the analog inputs can only be achieved by using screened cables

For each input channel of the module an analog input value exists and a appertaining channel fault bit. With activated channel fault bit a safety-related reaction has to be programmed in ELOP II related to the corresponding analog input.

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