Specifications

AS-Interface
ASIsafe
AS-Interface safety monitors
6/9
Siemens IK PI · 2009
6
■ Application (continued)
Features of the basic safety monitor
• Wildcards and deactivating of monitoring modules Wildcards
are available for the configuration. These wildcards are inte-
grated in the configuration and diagnostics and can be acti-
vated very easily if required. User-friendly and easy configur-
ing is thus possible even when system configurations change.
• Fault release:
If a module detects a fault, the AS-Interface safety monitor
goes into fault status. A differentiated fault release (reset) is
now possible for this scenario. The fault release can be acti-
vated by an AS-Interface standard slave, e.g. a pushbutton,
and is effective only on module level. The great advantage of
this is that the entire safety monitor is no longer reset but only
the module which is locked in the fault.
• Diagnostics hold:
Disconnections can be "frozen" until an acknowledgment
comes through a standard slave. This function provides valu-
able help in the event of short-time causes of disconnection.
• Also from Version 3 upwards:
The standard output data bits of safe input slaves can be
processed for acknowledgment, fault release and other non-
safety-oriented signals.
Additional features of the expanded safety monitor
The following additional features are provided by only the
expanded safety monitor:
• Safe time functions:
Timers with the following functions are available:
- ON-delay
- OFF-delay and
- Pulse
• "Button" function:
Additional acknowledgment option for restarting the system
using an additional button. The button function can be
assigned to any input or output signal of a standard slave
through configuration in the asimon software.
• Debouncing of contacts:
For debouncing the contacts it is possible to set a bounce
time after which a system restart takes place.
• Also from Version 3 upwards:
Filtering out of brief single-channel interruptions in the sensor
circuit.
A tolerance time can be set during which the brief opening of
a safety-oriented input contact is ignored in order to increase
plant availability.
Additional features of the expanded safety monitor with
integrated safe slave
This new safety monitor type offers the additional features of
the expanded safety monitor listed above plus the following
features:
• Actuating a safe distributed actuator (safe output module of
e.g. safe valves or motor starters) parallel to the 2nd enabling
circuit.
• Alternatively: Use as a "safe coupler" between two ASIsafe
networks. A safe input signal on network 1 can thus act on an
enabling circuit of network 2. A detour through a hard-wired
safe input module on network 2 is not required in this case.
Configuration software asimon V3: New features
• Multi-window system
• Creation of the safety logic in graphic function diagram form,
with changeover to former tree presentation possible
• No "preprocessing" of the safety logic
• Management of user-specific modules
• Downward compatibility:
- Existing asimon V2 projects can be loaded
- can also be used on all former versions of the safety monitor
- with the corresponding scope of functions
• Graphic printout of the safety logic
• Easier system start-up:
- Teaching the code sequences of safe AS-i Slaves step-by-
step
- Manual input of code sequences also possible in addition
- Selectable number of simulated slaves
• Simpler diagnostics using AS-Interface through assignment of
a diagnostics index to the software function block
• Signaling the switching state of the signaling and relay outputs
to a higher-level PLC using a simulated
AS-Interface slave
• New functions for filtering out brief interruptions and for
controlling a safe AS-i output or for safe coupling of two
AS-i networks