Siemens ISI EN 50295 Brochure page 9

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Overview
The safety monitor is the core component of Safety at Work. A
safe application is configured with a PC via the safety monitor.
Various different application-specific operating modes can be
used. These include the EMERGENCY-STOP function, tumbler,
two-handed operation as well as selection of Stop category
0 or 1.
In order to fully utilize the AS-Interface diagnostic capability, the
monitor can also be operated with AS-Interface addresses as an
alternative.
Two versions of the monitor are available:
• Safety monitor with one two-channel release circuit
• Safety monitor with two two-channel release circuits
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Technical specifications
Rated operational current
• I /AC-12
e
• I /AC-15
e
• I /DC-12
e
• I /DC-13
e
• Response time
• Ambient temperature in °C
• Storage temperature in °C
AS-Interface Safety at work
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Function
Safety monitor with enlarged functions
Logical OR operation
In this logical operation up to six elements can be OR gated.
(Until now, only two elements could be OR gated).
Logical AND operation
In addition to the standard AND gating in the main path of an
enabling circuit, an AND operation can be inserted into an OR
operation. More than two elements can be gated in this AND.
Buffer
Temporary shutdowns are stored in a buffer for the purpose of
diagnostics.
Number of devices
The number of devices that the safety monitor can process has
been increased from 32 to 48. Applications that are larger and
more complex can now be simulated in the safety monitor.
Timer functions
Timers are offered with the functions
• Delayed switching-on
• Delayed switching-off and
• Pulse.
Compatibility
Any configurations that have been previously created can be
loaded into the "new" safety monitor without changes.
Safety monitor
3RK1 105
up to 250 V, 2 A
115 V, 2A
230 V, 2A
up to 24 V, 3 A
24 V, 1 A
115 V, 0.1 A
230 V, 0.05 A
< 40 ms
0 to +60
-40 to +85
AS-Interface
AS-Interface safety monitors
Siemens IK PI · 2004
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