Notes On Commissioning - Bosch Rexroth IndraDrive MPH-02 Functional Description

9-34
Extended Drive Functions
"Dead Zone" to be
Parameterized
Assigning Analog Inputs to
Parameters
Parameters to be Assigned
Configuring the Analog Input

Notes on Commissioning

Assignment to Internal Channel
(Assignment A or B)
To stabilize the analog signal in the zero range it is possible to
parameterize a so-called "dead zone":
• P-0-0216, Analog input, assignment A, dead zone
• P-0-0239, Analog input, assignment B, dead zone
Note: Parameterizing a "dead zone" is useful mainly for noisy analog
values!
Assignment to Internal Drive Parameters
The analog input values are stored in the following parameters for display
and further internal processing:
• 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
By the assignment mechanisms
(assignment A) and P-0-0236 (assignment B) it is possible to assign two
analog input values (cf. P-0-0210, P-0-0211, P-0-0228, or P-0-0229) to
other drive parameters and thereby process them cyclically (cf. P-0-0212,
Analog input, list of assignable parameters).
Only such parameters can be assigned that are listed in P-0-0212,
Analog inputs, IDN list of assignable parameters.
The assignment of an analog input to a parameter is activated when a
value unequal S-0-0000 (S-0-0000 corresponding to "off") was
parameterized in P-0-0213 or P-0-0236.
Carrying Out the Automatic Scaling (or Adjust)
Automatic adjust takes place in 2 steps that have to be carried out one
after the other in order to achieve reliable execution of the function.
• step 1:
zero point shifting
(or reference point shifting because reference is not obligatorily
established to U = 0V)
e
• step 2:
amplification or amplitude scaling
There is only one command for both assignment channels. In P-0-0218,
Analog input, control parameter (bit 1) you have to define which
channel is adjusted:
• bit 1 = 0 → scaling assignment channel A
• bit 1 = 1 → scaling assignment channel B
Configuration and Assignment to Drive Parameters
The assignment of an analog input to an internal analog channel
(assignment A or B) takes place via parameter P-0-0218, Analog input,
control parameter:
• bits 4 to 7 → selecting analog input for assignment A
• bits 8 to 11 → selecting analog input for assignment B
MPH-02, MPB-02, MPD-02
via the parameters P-0-0213
DOK-INDRV*-MP*-02VRS**-FK01-EN-P