MPH-02, MPB-02, MPD-02
Extended Drive Functions
9-11
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Depending on
P-0-0327, Encoder resolution of measuring encoder
and the gear ratio of the measuring encoder (P-0-0127, P-0-0128), a
multiple of position data results from one division period of the measuring
encoder due to digitalization. By adjusted multiplication the available
range of measuring encoder position data of (2
30
-1) values is observed.
The resulting drive-internal encoder resolution is as follows:
drive-internal measuring encoder resolution = P-0-0327 * P-0-0326
auxiliary calculation and drive-internal limitation:
P-0-0326 = 2
30
* P-0-0128/(P-0-0127*P-0-0327* P-0765)
≤
2
n
,
n
≤
15 (integral)
P-0-0127:
input revolutions of measuring gear
P-0-0128:
output revolutions of measuring gear
P-0-0326:
multiplication of measuring encoder
P-0-0327:
encoder resolution of measuring encoder
P-0-0765:
modulo factor measuring encoder
n:
number of revolutions at axis or shaft
Fig. 9-7:
Drive-internal measuring encoder resolution
Note:
The multiplication of the measuring encoder (P-0-0326) is
determined automatically and drive-internally!
The multiplication value (P-0-0326) calculated according to the formulas
"drive-internal measuring encoder resolution" characterizes the encoder
dimensioning.
DC000015v02_en.fh7
value < 2
15
value > 2
15
ideal encoder resolution over
the selected travel range!
value of S-0-0327 can be
- reduced (cycles rotary encoder)
- increased (DP linear encoder)!
value of S-0-0327 can be
- increased (cycles rotary encoder)
- reduced (DP linear encoder)!
check selected
no. of cycles (rotary encoder) or
division period (linear encoder)
calculating
P-0-0326
value of
S-0-0326
value = 2
15
P-0-0326:
multiplication of measuring encoder
P-0-0327:
encoder resolution of measuring encoder
Fig.
9-8:
Checking the selected resolution and determining the ideal
resolution for the measuring encoder
Drive-Internal Resolution of
Measuring Encoder Position
Data
Encoder Dimensioning
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com