SAFETY ANALOG INPUT CURRENT MODULE
SAI 041
18.05.2022
Page 1
S-DIAS Safety Analog-Input Current Module
SAI 041
The S-DIAS safety analog input module provides the values of
four analog current inputs from the Safe CPU (Safety CPU). The
analog inputs can also be read by the functional control CPU via
the S-DIAS bus from the safety CPU. The four current inputs
have an input range of 4-20 mA with a resolution of 16 bits. A 24
V sensor supply is provided for the analog inputs, which must be
powered externally. The external 24 V supply for the analog
inputs is monitored for Over- and under voltage.
Safe evaluation of the analog inputs is ensured by two
independent diversitary evaluations with mutual monitoring.
The safety functions of the component meet the requirements
•
for
two
-channel use
according to
SIL 3
in compliance with EN 62061 and
PL e
,
Cat. 4
in accordance with
EN ISO 13849-1/-2.
as well as
•
for
single
-channel use,
the requirements for to
SIL 3
in compliance with EN 62061 and
PL e
,
Cat. 3
in
accordance with EN ISO 13849-1/-2.
Date of creation: 25.06.2019
Version date: 25.06.2019
Article number: 20-890-xxx-E
