12
Incremental Encoder FG 41
Non-intended use
WARNING! NOTICE!
Danger of death, physical injury and damage to property in case of non-
intended use of the measuring system!
The following areas of use are especially forbidden:
in environments where there is an explosive atmosphere
for medical purposes
fastening transport or lifting tackle to the device,
for example a crane hook to lift a motor
fastening packaging components to the device,
for example ratchet straps, tarpaulins etc.
using the device as a step,
for example by people to climb onto a motor
Safety functions of the fail-safe processing unit
The
S
afety
C
omputer
S
ystem (SCS), to which the measuring system is connected, must
perform the following safety checks.
With regard to "Single fault safety" and "Ideal error detection" please see IFA directive "GS-
IFA-M21".
NOTES!
To enable the correct measures to be taken in the case of an error, the
following applies:
·
Safe state – passive, only for measuring system variant 1
In passive safe state the measuring system does not output any valid
SIN±/COS± – signals to the downstream fail-safe processing unit. The
processing unit detects the error through evaluation of the annulus relationship
SIN(x)2 + COS(x)2 = 1. If the result is outside the tolerance range, the
incremental data are evaluated as unsafe. The downstream fail-safe processing
unit has an ideal error detection.
·
Safe state – active, only for measuring system variant 2
In active safe state the signal outputs are switched to tri-state. The processing
unit detects the error via an implemented cable breakage detection.
