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2.1
Normal Mode Operation Detailed Description
Normal Mode Operation
The flow of data in the TMS 9250 is subjected to various forms of processing as it passes from
input to output.
This process is best described by use of a flow chart as follows:
The data is transmitted from the rotor at the maximum data rate but the rate has to be slowed
down for linearizing and scaling due to the amount of processing required – the TMS 9250
features independent scaling of the input and output, using floating point values for
convenience of the user, and the linear zing routine can use up to 9 data points (user
selectable), so a significant amount of processor power is consumed during these floating
point calculations.
The next process is digital filtering, using a parameter driven recursive algorithm that performs
output smoothing but also provides a separate parameter that controls a filter bypass in the
event of a significant change in input being required to be reflected through to the output
without delay.
The filtered data is then converted to the required analog output format or formats (the TMS
9250 can drive the voltage or current loop output at the same time as providing a frequency
Rev B
April 2012
© 2012 – Honeywell International Inc. All rights reserved
2. Modes of Operation
TMS 9250 Product User Manual
2. Modes of Operation
008-0738-00
25
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