Configuring the AS-Interface safety monitor
4.3 Creating and changing a configuration
ASIMON V3 - Configuration software for AS-Interface safety monitor
90 Programming and Operating Manual, Edition 09/2008, GWA 4NEB 333 1558 02 DS 02
4.3.3 External device monitoring devices
External device monitoring devices (also called EDM devices - External Device Monitor) are
used for realising dynamic contactor monitoring for a configuration of the AS-Interface safety
monitor. If no EDM device is configured, contactor monitoring is deactivated.
For example, with dynamic contactor monitoring, the motor contactors connected downstream
of the safety monitor for the potentially dangerous movement are connected to the safe swit-
ching outputs of the AS-Interface safety monitor. Via a feedback control loop, the state of the
contactors is monitored by the input contactor monitor on the AS-Interface safety monitor.
Reset of error condition
If a device detects an error, the AS-Interface safety monitor enters the error state. The error
state is locked (error lock). With versions of the AS-Interface safety monitor before 2.0, the
error state can be rectified only by resetting the AS-Interface safety monitor by switching off
and then switching back on the AS-Interface safety monitor or by pressing the Service button
on the AS-Interface safety monitor.
With software versions of the AS-Interface safety monitor > 2.0, the reset of error conditions
(Reset) on the device level after OSSDs is possible, i.e. via an AS-Interface standard/A/B
slave, e.g. a button can trigger the error lock (see chapter 3.1 "Launching the program").
Note
Multiple EDM devices can be integrated in an OSSD.
Note
Additional information about the electrical design and connection of a contactor monitor can be
found in the operating manual of the AS-Interface safety monitor.