Configuring the AS-Interface safety monitor
4.3 Creating and changing a configuration
ASIMON V3 - Configuration software for AS-Interface safety monitor
Programming and Operating Manual, Edition 09/2008, GWA 4NEB 333 1558 02 DS 02 59
Input mask
Description
With the double channel dependent with filtering monitoring device, both switching signals
of the respective safe AS-Interface slave each act on 2 bits of the transmission sequence. The
user defines a synchronisation time, a stabilising time and, if necessary, a tolerance time.
When switched on, the protective switch may switch between all possible states (none, one,
or both contacts closed) during the synchronisation time.
If both contacts remain open for the duration of the stabilising time, the synchronisation time is
restarted when the contacts are again closed. If the protective switch is in an undefined state
for the duration of the stabilising time, the functional device switches to the locked error state.
Only if both contacts close within the synchronisation time and remain closed for the duration
of the stabilising time is the validation performed.
The functional device offers 3 possibilities for handling short-term, single-channel interrup-
tions.
If the shutdown with test request is activated, the functional device always calls for re-
start with test request.
If shutdown without test request is activated, the functional device calls for restart with
test request only for single channel interruptions which have lasted longer than the set to-
lerance time.
If tolerancing without shutdown is selected, shutdown in the event of single channel in-
terruptions only occurs after the tolerance time has passed. Note here that the reaction
time is extended by the set tolerance time!