Siemens SITRANS LG250 Operating Instructions Manual page 72

Electricial Characteristics
Transmitter Function Blocks
Advanced Function Blocks
Diagnostics
General Information
Function blocks
Transducer Block (TB)
The Transducer Block "Analog Input (AI)" takes the original measured value (Secondary Value 2),
carries out the min./max. adjustment (Secondary Value 1), carries out a linearization (Primary Value)
and makes the values on its output available for further function blocks.
72
Physicial Layer Type
Input Impedance
Unbalanced Capacitance
Output Amplitude
Electrical Connection
Polarity Insensitive
Max. Current Load
Device minimum operating voltage
Resource Block (RB)
Transducer Block (TB)
Standard Block (AI)
Execution Time
Discret Input (DI)
PID Control
Output Splitter (OS)
Signal Characterizer (SC)
Integrator
Input Selector (IS)
Arithmetic (AR)
Standard
Advanced
Performance
Function Blocks Instantiable
LAS (Link Active Scheduler)
Master Capable
Number of VCRs (Virtual Communication Re-
lationships)
SITRANS LG250 - Operating Instructions
Low-power signaling, bus-pow-
ered, FISCO I.S.
> 3000 Ohms between
7.8 KHz - 39 KHz
< 250 pF to ground from either
input terminal
0.8 V P-P
2 Wire
Yes
10 mA
9 V
1
1
3
30 mS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
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PBD-51041056