Bosch Rexroth IndraDrive MPH-02 Functional Description page 559

MPH-02, MPB-02, MPD-02
Sampling
Filtering
Voltage Display of Analog Inputs
Factory-Provided Adjust
Assignment of Analog Inputs
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Sampling and Signal Processing of Analog Inputs
The analog input signals (max. 4 analog inputs) are sampled with 8-fold
oversampling in the position loop clock (advanced: T = 250µs; basic:
T = 500µs).
All sampled analog input signals can be smoothed by a PT1 filter. The
following parameters are available to set the respective filter:
• P-0-0217, Analog input 1, time constant input filter
• P-0-0232, Analog input 3, time constant input filter
• P-0-0233, Analog input 4, time constant input filter
Additionally for basic design:
• P-0-0231, Analog input 2, time constant input filter
When the filter has been activated its limit frequency (in Hz) results from
the input time constant (in ms) by the following relationship:
The sampled and possibly smoothed voltage (12-bit resolution) of the
analog inputs channels is displayed in the following parameters:
• P-0-0210, Analog input 1
• P-0-0228, Analog input 3
• P-0-0229, Analog input 4
Additionally for basic design:
• P-0-0211, Analog input 2
Note: These parameters can be, for example, transmitted to the
higher-level master or directly processed in the drive-
integrated PLC (IndraMotion MLD-S).
During the adjust of the control module or the optional module MA1 at the
factory, the adjust values, among other things for offset and amplification
of the analog inputs, are stored in the following parameters:
• P-0-3901, Adjust values of control section
• P-0-3904, Adjust values analog I/O interface
Internal Processing of Analog Input Values
Via two assignment mechanisms the analog input values can be assigned
to internal drive parameters.
The assignment of an analog input to an internal channel (assignment A
or B) takes place via parameter P-0-0218, Analog input, control
parameter.
• bits 4 to 7: → assignment of an analog input for assignment A
• bits 8 to 11: → assignment of an analog input for assignment B
See also "Notes on Commissioning" in the same section
See also Parameter Description "P-0-0218, Analog input, control
parameter"
Extended Drive Functions
π
=
f 1000 /( 2 * * T )
g
9-31