Analog modules
9.3 SM 336; F-AI 6 x 0/4 ... 20 mA HART
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
255
For information about the Zener diodes, refer to chapter "Calculation of the residual supply
voltage at the transducer (Page 239)".
WARNING
To achieve SIL3/Cat.4/PLe using this wiring, you must use a suitably qualified sensor.
Note
If you are using
SIMATIC PDM
as the engineering tool for your HART field device, create a
HART field device only for the channel with the lower channel number.
Note
You can supply the two F-SMs from two power supply units. If you use two power supply
units, the two grounds on the F-SMs will have to be connected with each other.
Assignable parameters for application 8
Table 9- 22 Parameters for application 8 of SM 336; F-AI 6 x 0/4 ... 20 mA HART
Parameters Range of values in safety mode Type Effective range
Diagnostic interrupt Activated/deactivated Static Module
Behavior after channel
fault
Passivate the entire
module/Passivate the channel
Static Module
HART_Gate Off/On/Can be switched Static Module
Interference frequency
suppression
50 Hz/60 Hz Static Module
Evaluation of the sensors 1oo1 evaluation Static Channel
Measuring range 4 to 20 mA, 0 to 20 mA Static Channel
F-wire break detection activated/deactivated
(in the 4 to 20 mA measuring range)
Static Channel
Smoothing 1 / 4 / 16 / 64 conversion cycles Static Channel
HART function Activated/deactivated Static Channel
HART repetitions 0 to 255 Static Channel
HART group diagnostics Activated/deactivated Static Channel
Redundancy Activated/deactivated Static Channel
Discrepancy analysis for fail-safe analog input modules
For safety-oriented applications according to SIL 3, perform a discrepancy analysis with
2oo3 evaluation in your safety program (e.g. in
S7 F/FH Systems
with the F_2oo3_AI F-
block).
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