Fail-safe signal modules
F digital/analog modules
Description
The fail-safe signal modules of ET 200M are the interface between the fail-safe SIMATIC PLCs and the process. A host of different digital and analog modules provide exactly the inputs/outputs required for each task.
Application
The spectrum of fail-safe input and output modules is used for central expansion of the SIMATIC S7-300F or for distributed expansion in an ET 200M station for fail-safe S7 PLCs.
For distributed expansion of a SIMATIC S7-400FH, the ET 200M I/O also supports a redundant configuration.
In combination with the redundant PROFIBUS interface, this forms the basis of Flexible Modular Redundancy™ (FMR): The fault tolerance level can be tailored to requirements in that single, two and three-channel redundancies can be combined in the same system and tuned to each other. The redundant architecture offers maximum availability since this measure can compensate for failure of a CPU, a PROFIBUS line or a signal module. In addition, safety-related and standard I/O modules (critical and non-critical I/Os) can be combined in an ET 200 M/S station.
Benefits
-
Space-saving assembly due to the high packing density of channels
-
Easy parameterization in STEP 7
-
Fail-safe and standard modules can be combined
-
One bus (PROFIBUS DP) for the transmission of fail-safe and standard signals
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Flexible Modular Redundancy™ (FMR): Maximum flexibility during selection of redundancy level – matching the Safety Instrumented Function (SIF)
Technical data
|
Assembly |
Properties |
|---|---|
|
Isolation module |
- For electrical isolation of F modules and standard modules (for SIL 3) |
|
Fail-safe digital modules |
Digital input module SM 326 F |
Digital input module SM 326 F (NAMUR) |
Digital output module SM 326 F |
Digital output module SM 326 F (PM) |
Analog input module SM 336 F |
|
Number of inputs or outputs |
up to 24 |
8 |
10 |
8 x current sinking/sourcing |
6 (15 bit) |
|
Input and output voltage |
24 V DC |
NAMUR |
24 V DC |
24 V DC |
|
|
Interrupts |
Diagnostic interrupt |
Diagnostic interrupt |
Diagnostic interrupt |
Diagnostic interrupt |
Diagnostic interrupt |
|
Input/ |
Text |
Text |
2 A per channel at signal "1" |
2 A per channel at signal "1" |
0/4…20 mA, HART |
|
Order No. group: 6ES7 |
326-1BK. 1) |
326-1RF. 2) |
326-2BF. 1) |
326-2BF. 1) |
336-4GE. |
1) As SIPLUS component also for extended temperature range -25…+60 °C and corrosive atmosphere/condensation (www.siemens.com/siplus)
2) As SIPLUS component also for corrosive atmosphere/condensation
(www.siemens.com/siplus)