Moog MSD User Manual

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MSD Servo Drive User Manual SERCOS II
39
[ Chapter 7 ]
7 Weighting
The weighting describes the physical unit and number of decimal places with which the
numerical values of the parameters exchanged between the master control system and
the drives are to be interpreted. The method of weighting is defined by the parameters
for position, velocity, acceleration and torque weighting.
7.1 Weighting of position data
The translatory position weighting is defined by the parameters listed in the following
table. All position data of the drive (e.g.: setpoint, actual and limit values) are subject to
the preset weighting. If “No weighting“ is selected via parameter S-0-0076, the weight-
ing factor and weighting exponent are irrelevant. The position data is then subject to a
differently defined weighting.
IDN Description
S-0-0076 Weighting method for position data
S-0-0077 Weighting factor for translatory position data
S-0-0078 Weighting exponent for translatory position data
S-0-0079 Rotary position resolution
S-0-0103 Modulo value
Table 7.1 Scaling parameter for position weighting
7.1.1 Weighting of translatory position data
Translatory weighting is selected via S-0-0076. The significance of the LSB of the transla-
tory position data is defined by the following equation:
LSBsignicance=Unit•S-0-0077•10
S-0-0078
When translatory preferential weighting is selected, the weighting as per the following
table applies.
Weighting method
(from S-0-0076)
Unit
(from S-0-0076)
Weighting
factor (S-0-0077)
Weighting
exponent (S-0-0078)
Preferential
weighting
Linear m 1 -7 0.1 ìm
Table 7.2 Preferential weighting of translatory position data
7.1.2 Weighting of rotary position data
Rotary weighting is selected via S-0-0076. The significance of the LSB of the rotary posi-
tion data is defined by the rotary position resolution (S-0-0079).
LSB significance = Unit ·
revolution1
S-0-0079
When rotary preferential weighting is selected, the weighting as per the following table
applies.
Weighting method
(from S-0-0076)
Unit (from S-0-0076)
Rotary position
resolution (S-0-0079)
Preferential weighting
Rotary Degrees 3 600 000 0.0001 degrees
Table 7.3 Preferential weighting of rotary position data

Moog MSD Specifications

General

Brand	Moog
Model	MSD
Category	Servo Drives
Language	English