—————— Instruction manual ——————
213
4)
For the max. full scale values, refer to paragraph 6.16.3
PID function
5)
With a scaling factor of 1.0 and
Tune value inp
XX=1, 10V or 20mA correspond
to
Speed ratio
= 20000.
Tune value inp XX
Fine tuning of the input when the max. signal does not exactly correspond to the rated
value. Example see below.
Auto tune inp XX
Automatic fine tuning of the input. If this command is given,
Tune value inp XX
is auto
-
matically selected so that the input signal present corresponds to the max. variable value,
such as the
Speed base value
. Two conditions are necessary for automatic fine tuning:
Input voltage greater than 1 V or input current greater than 2 mA
Positive polarity. The value found is automatically set for the other direction for
the TPD32-EV...4B converters.
Note:
The automatically calculated value can, if necessary, be modified manually
via
Tune value inp XX
.
Input X filter
Filtering of analog input X measurement.
Offset inp XX
If the analog signal has an offset or if the variable assigned to the input already has a value
although there is no input signal present, this can be compensated via the
Offset inp XX
.
The converter is factory set so that analog values as +10V/-10V.
With field bus operation (Option), the
Input XX sign
parameter specifies the sign for the rotation direction.
If a parameter is already internally assigned (e.g. if
Speed ref 1
is automatically connected with the ramp output
when the ramp is enabled), it will no longer appear in the list of parameters that can be assigned to an analog input.
The
Input XX sign +
and
Input sign -
parameters cannot be addressed via the serial interface.
Example 1:
The speed reference value of a drive is defined with an external voltage of 5V. With this
value the drive should reach the max. allowed speed (set via
Sped base value
).
As parameter
Scale input XX
the scaling factor 2 is entered (10V : 5V)
Example 2:
An external analog reference reaches only max. 9.8V instead of 10V.
As parameter
Tune value inp XX
1.020 is entered (10V : 9.8V).
The same result would have been obtained via the
Auto tune inp XX
function. The ap
-
propriate parameters would have to be entered in the menu of the keypad. The maximum
possible analog value (in this case 9.8 V) would have to be present at the terminal with
a positive polarity. The keypad will adjust the “Tune value” automatically if the E key
is pressed.
Содержание TPD32-EV-...-2B
Страница 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
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