Siemens sitrans tr200, Operating Instructions Manual

Page: 56 / 78

Functions
8.20 Simulation (only for SITRANS TR300)
SITRANS TR200/TR300
56
Operating Instructions, 04/2007, A5E01071992-01
Note
Simulation
•
The transmitter does not respond to sensor input signals when the simulation is active.
•
The device may not be parameterized to "thermocouple with internal cold-junction
compensation" for simulating the internal electronics temperature. In this case, the
internal electronics temperature is a measured variable and cannot be replaced by a
simulation value.
Measuring input simulation
●
Simulation as fixed value
Taking the physical unit into account you can parameterize fixed simulation values for
both the primary measured value and electronics temperature. The analog output value
sets itself to the appropriate specification for the primary measured value.
● Simulation with a periodical ramp function
In addition to adjustable fixed values, you can parameterize a ramp function that returns
periodically for each of the two simulation paths. An adjustable lower and upper value
determines the limits that the simulation values can move between with a rising or falling
tendency. The step width can be calculated with the step number, which is also
adjustable.
Upper value – lower value
Increment
Step width =
The duration between two consecutive simulation values is predefined by the step duration.
The analog output follows the simulated values when simulating for the first primary
measured value.