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2 additional functions of the version eks fsa, Additional functions of the version eks fsa, Manual eks light and light fsa – EUCHNER FSA Light User Manual

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Manual EKS Light and Light FSA

3.1.2 Additional functions of the version EKS FSA

The EKS FSA version features an additional semiconductor switching contact (LA1/LA2) that is switched off as
long as there is no authorized Electronic-Key in the Electronic-Key adapter or if the Electronic-Key cannot be
read.

The semiconductor switching contact is galvanically isolated from the device electronics. Either AC or DC can
be switched. Outputs A, B, C, D and strobe on the first channel LB and the semiconductor switching contact on
the second channel LA are each operated with diversity by a dedicated processor that switches off the outputs
or the switching contact on removal of the Electronic-Key (see Figure Block diagram EKS FSA).

Figure 4: Block diagram EKS FSA

By separately evaluating channel LB and channel LA, the EKS FSA device can be used in conjunction with a
safe evaluation device in safety-related applications. Integrated voltage monitoring switches off outputs A, B, C,
D and strobe (channel LB) or the semiconductor switching contact (channel LA) if the power supply is outside
the permitted tolerance (see section 5.2).

110845-04-03/12

Subject to technical modifications

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