Bosch Rexroth IndraDrive MPH-02 Functional Description page 560

9-32
Extended Drive Functions
Processing Clock for Analog
Input Values
Controlling the Internal
Processing
Note: It is therefore only possible to assign a maximum of 2 analog
inputs to internal drive parameters (see assignment A and B).
All other analog inputs can then only be used for direct access
via the master communication or the drive-integrated PLC
(e.g. reading the voltage levels).
The assignment channels to internal parameters available in the drive
basically have the same functionality. That is why we will only describe
assignment channel A. The description of assignment channel B
corresponds to that of assignment channel A.
P-0-0212 P-0-0213
P-0-0215
P-0-0214
P-0-0216
P-0-0217
sampling
+
T = pos. contr. clock
-
N = 8
P-0-0210: analog input 1
P-0-0212: analog input, list of assignable parameters
P-0-0213: analog input, assignment A, target parameter
P-0-0214: analog input, assignment A, scaling per 10V full scale
P-0-0215: analog input, assignment A, signal value at 0V
P-0-0216: analog input, assignment A, dead zone
P-0-0217: analog input, time constant input filter
Fig. 9-18: Functional principle of analog input (example for assignment A)
The processing of the analog input values in the two channels
(assignment A and B) only differs in the cycle time:
• assignment A
→ the position loop clock (advanced: T = 250µs, basic: T = 500µs)
is used
• assignment B
→ a clock of T = 2 ms is used
Settings in parameter P-0-0218, Analog input, control parameter
control the internal processing functions (adjust and assignment):
• bit 0 → determining the adjust mode
(for command "C2800 Analog input adjust command")
• bit 1 →determining the assignment channel for adjust
(for command "C2800 Analog input adjust command")
• bits 4...7 → assigning the analog inputs for assignment channel A
• bits 8...11 → assigning the analog inputs for assignment channel B
Automatic Scaling (or Zero Point Shifting)
Apart from manual adjust or scaling of the analog inputs (assignment A or
B), it is also possible to adjust them automatically by activating the
command "C2800 Analog input adjust command".
In the case of automatic scaling, the parameters P-0-0214 and P-0-0215
or P-0-0237 and P-0-0238 are written by the drive.
MPH-02, MPB-02, MPD-02
x +
P-0-0210
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
data of the
target parameter
DF0057v1.fh7