Analog modules
9.3 SM 336; F-AI 6 x 0/4 ... 20 mA HART
Fail-safe signal modules
266 Installation and Operating Manual, 01/2010, A5E00085586-10
Technical data
Sensor supply output
Number of outputs
6
Output voltage
Loaded
Minimum L+ (-0.5 V)
Output current
Rated value
300 mA
Approved range
0 to 300 mA
Additional (redundant) infeed With external additional elements, see wiring
schemes
Short-circuit protection Yes, electronic
Operating value
Typ. 1 A
Permitted aggregate current of outputs
1.8 A
Shutdown at input Typ. 35 mA
Sensor selection data
Input range (rated values)/input resistance
Current
Typ. 150 Ω
Max. 175 Ω
Permitted input current for current input
(destruction limit)
Max. 40 mA
Safeguarding against short circuit in case of
external sensor supply
e.g., melting fuse 62 mA FF
Signal sensor connection
For current measurement
As 4-wire transducer
Possible
As 2-wire transducer
Possible
HART communication
Monodrop/multidrop operation Monodrop operation
Primary/secondary master Primary or secondary master *
Impedance of an input channel for HART
communication.
100 – 150 Ω
For operation with an external secondary
master (e.g. communicator), an external load
may be necessary to achieve a total impedance
of 230 – 600 Ω.
Functional range of HART Communication 1.17 to typ. 35 mA
HART shutdown threshold 1.17 mA
Protocol version 5 to 6
Protection against overvoltage
Protection of supply voltage L+ from surge stress according to IEC 61000-4-5
Up to degree of severity 2 No external protective elements required
Symmetrical (L+ to M)
± 0.5 kV; 1.2/50 μs
Asymmetrical (L+ to PE, M to PE)
± 1 kV; 1.2/50 μs
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