Table of Contents - TG Drives
Table of Contents - TG Drives
Table of Contents - TG Drives
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124<br />
Ana, Analog I/O<br />
ANA, ANALOG I/O<br />
Group Group<br />
No.<br />
Description<br />
EXTENDED REGISTER GROUPS<br />
Ana 15 The Ana group is the analog user input/output<br />
interface.<br />
Inputs: The standard user analog inputs have 14 bits<br />
resolution and approximate 12 bits <strong>of</strong> linearity. The<br />
result from the inputs can be both scaled and <strong>of</strong>fsetadjusted<br />
to be directly usable as set-speed, settorque,<br />
etc. in the user program.<br />
The RANGE parameter sets the numerical range for<br />
the input and the OFFS parameter sets the <strong>of</strong>fset. The<br />
result is calculated as:<br />
(RAW-RESULT / 16384) * RANGE + OFFSET<br />
For example:<br />
RANGE = 10000<br />
OFFSET = -2000.<br />
This results in a range from –2000 to 8000.<br />
Outputs: The RAW range for the analog outputs is -<br />
32768 to 32767 with 12 bits <strong>of</strong> resolution.<br />
The RAW_OUTPUT is calculated as:<br />
RAW_OUTPUT := Ana.Out * 2 Ana.OutSF + Ana.OutOffs<br />
GENERAL<br />
There is no range-check to clamp the RAW_OUTPUT<br />
to -32768 .. 32767. In case <strong>of</strong> overflow, the analog<br />
voltage will wrap from full positive to full negative, and<br />
vice versa.<br />
The analog interface in the DMC 2 consists <strong>of</strong> two 14 bit inputs and two 12 bits<br />
outputs. These analog channels have no secondary functions and can be used<br />
freely by the application program. The inputs can be scaled to any 32 bit range and<br />
the outputs can be scaled with a shift factor (binary scale). The outputs are limited<br />
to 1mA <strong>of</strong> current (10 kOhm) load by the meens <strong>of</strong> a 1 kOhm output impedance.<br />
The outputs are short ciruit pro<strong>of</strong>.<br />
The scale <strong>of</strong> the outputs are set so that full logical output (16bit) gives 10.6 V. This<br />
means that a +/- 10 V output scale is mapped to +/- 31000 in th eoutput value.<br />
FUNCTION<br />
Ana.In1..Ana.In2<br />
Ana.In1Range<br />
Ana.In1Offs<br />
Ana.ConnTMR.<br />
The Ana.In1Range and Ana.In1Offs scale the value in<br />
Ana.In1 (Ana.In2 is handled in the same way). The values<br />
<strong>of</strong> the inputs can be read from the program whenever<br />
needed and treated as any values or the inputs can be<br />
”connected” to registers with an update rate set with<br />
Ana.ConnTMR.<br />
Ana.Out1..Ana.Out2 The output is scaled with Ana.Out1Sf for Ana.Out1 and<br />
Ana.Out2Sf for Ana.Out2.<br />
Ana.Out1Sign.. The sign <strong>of</strong> the outputs can be set in the Ana.Out1Sign<br />
Ana.Out2Sign and Ana Out2Sign registers<br />
User's Manual 5.1 Inmotion Technologies AB<br />
Doc. No.9032 0027 01 (B), Rev. 11.07.2001
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