MCO 305 Design Guide
__ How to Read this Design Guide __
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MG.33.L4.02 – VLT
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Definitions
MLONG
An upper or lower limit for many parameters:
-MLONG = -1,073,741,824
MLONG = 1,073,741,823
Online / Offline Parameters
Changes to online parameters are activated immediately after the data value is changed. Changes to offline
parameters are not activated until you enter [OK] on the LCP.
Quad-counts
Incremental encoders: 4 quad-counts correspond
to one sensor unit.
Absolute encoders: 1:1 (1 qc correspond to one
sensor unit).
Through edge detection, a quadrupling of the incre-
ments is produced by both tracks (A/B) of the
incremental encoder. This improves the resolution.
Derivation of quad counts
Encoder Direction
The direction of encoder is determined by which
order the pulses are entering the drive.
Clockwise direction means channel A is 90 electri-
cal degrees before channel B.
Counter Clockwise direction means channel B is
90 electrical degrees before A.
The direction determined by looking into the shaft
end.
Summary of Contents for MCO 305
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