Sensor systems 2 AS-Interface

Masters and
Gateways
Power Supplies,
Extender, Repeaters
Safety at work
I/O Modules
Control cabinet
I/O Modules
Field application
Analogue modules
Other modules
Inductive sensors
Photoelectric
sensors
Rotary encoders
Accessories
AS-Interface - Safety at Work
84
S
The labeling of safe
slaves is denoted by a
red "S".
4.4 Safe slaves
In order to be able to cover the necessary functions in the system, safe
slaves are available which connect directly to the AS-Interface. These are,
for example emergency stop switches with an integrated AS-Interface interconnection,
safe slaves with 2 safe inputs as well as safe slaves with 2 safe
inputs and 2 non-safe outputs, for example for the connection of contacts.
Safety category 3 is also achieved through separate assignment of the inputs
on the module. The two-channel input on the module must be used to
provide safety category 4.
Safe modules with non-safe outputs can be used for direct local signalling
on site. Using one data bit, inputs and outputs can simply be logically connected
in the module and, for example, a warning light or the LED in the
emergency stop switch can be controlled. However, due to the integrated
logic function in the module, only the output of the module must be fed to
the lamp. Previously it was necessary to route via the master, a software
routine in the PLC, a relay output in the control cabinet and the wiring from
the control cabinet to the warning light.
4.5 The ASIMON configuration software
The ASIMON softwar is used to configure and commission the safety monitor
via a PC with an RS 232 interface. The easy-to-understand control interface
is used to assign safe inputs for shut-off circuits and monitor modules,
to establish emergency-off or safety light grid functions, for example,
the assignment for the start modules as well as the selection of the output
modules (Stop category 0 or 1). The options are wide ranging, so that the
settings are suitable for almost all applications.
System documentation for the safe components is supported, in that the
configuration can be stored and also printed out. The creation of a copy of
the configuration for other safety monitors is also possible. The following
steps are required to generate a configuration:
Start the program and the "Start Assistant"
Select diagnostic function
Establish configuration: Title, dependencies, slave addresses, assignment
of the slave to a module, complete AND/OR coupling module, determine
stop category, define delay time.
Assign an AS-Interface address for the safety monitor (Optional)
If a configuration already exists, this can be loaded and amended.
The assignment of modules from a symbol library to the two release circuits
takes place interactively by drag-and-drop.
When a configuration has been devised and checked it can be transferred
to the safety monitor and the code sequence of the safe slaves to be monitored
can be taught in. The configuration protocol must then be checked
and enabled. The last step is to switch over the safety monitor from the configuration
mode to the protection mode.
The functions New Configuration, Teach-in Code Sequence, Enable, Stop
Command and Change Password are password protected.
The ASIMON software provides extensive support for fault isolation and
fault rectification. In the ASIMON manual you will find several example applications
to enable you to become quickly familiar with the system.
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com
Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005