In the system components are classed as a component group if they have the same shaft speed. An example of a component group would be the motor shaft of a gearbox with 2 roller bearings and a pinion on the toothing. Each component group must contain one single shaft.
If a pre-defined aggregate has been inserted, it is possible that component groups may already exist.
In contrast to a Plant, Aggregate group, and Aggregate, component groups have transmission ratios and couplings to adjacent component groups, which are described below.
In addition, component groups can be assigned trend filters, see also Trend filter.
Settings for a component group in the detail window
General
ID
This value is generated automatically by the database and cannot be changed.
Order
This value indicates the order of the display within the same level of the plant tree.
Name
The name of the asset (e.g. plant, aggregate group, aggregate, etc.) can be changed here.
Comment
The Comment field is used to enter comments about an asset. The input field can be enlarged by dragging (bottom right).
Trend filter
The trend filter can be assigned to a component group here.
See also Trend filter
Plant links
To open, right click on Component group - Edit - Plant links
A plant link describes the links between a component group and those preceding and following it. To create a plant link, simply drag the relevant component group to the field provided.
Click on <Apply> to apply the change.
Example: 1 x motor and 1 x gearbox (1 stage)
Motor
-
Motor NDE (Previous: None // Next: Motor DE)
-
Motor DE (Previous: Motor NDE // Next: Gearbox input shaft)
Gearbox (1 stage)
-
Gearbox input shaft (Previous: Motor DE // Next: Gearbox output shaft)
-
Gearbox output shaft (Previous: Gearbox input shaft // Next: None)
Ratios
Since it is often the case that only one speed measurement exists in a powertrain, the shaft speeds of the other component groups have to be calculated using transmission ratios.
The ratio configuration can be carried out on the Ratios tab in the module configuration.
Note:
The transmission ratios are automatically recalculated if component parameters are changed (e.g. the number of teeth on a gear). It is also possible to trigger the calculation manually using the <Calculate> button.
The setting for the transmission ratios is explained below using a practical example. This involves coupling a motor with a 1-stage gearbox.
Ratio settings using motor example (no transmission ratio)
Motor NDE (Not Driven End = fan side of motor)
|
Ratio TOTAL |
1 (no transmission ratio) |
|---|---|
|
Ratio IN |
1 (no transmission ratio) |
|
Ratio OUT |
1 (no transmission ratio) because the motor shaft of the subsequent gearbox is rotating at the same shaft speed |
|
Foreign IN coupling |
Blank as this is the beginning of the powertrain |
|
Self IN coupling |
The motor’s own shaft |
|
Self OUT coupling |
The motor’s own shaft |
|
Foreign OUT coupling |
The motor’s own shaft |
|
Speed signal |
Motor speed sensor / Motor TCP speed information |
Motor DE (Driven End = drive side of motor)
|
Ratio TOTAL |
1 (no transmission ratio) |
|---|---|
|
Ratio IN |
1 (no transmission ratio) |
|
Ratio OUT |
1 (no transmission ratio) because the motor shaft of the subsequent gearbox is rotating at the same shaft speed |
|
Foreign IN coupling |
The motor’s own shaft |
|
Self IN coupling |
The motor’s own shaft |
|
Self OUT coupling |
The motor’s own shaft |
|
Foreign OUT coupling |
Gearbox input shaft |
|
Speed signal |
Motor speed sensor / Motor TCP speed information |
Key gearbox data
-
1-stage
-
Input shaft pinion 21 teeth
-
Output shaft gear 42 teeth
Gearbox input shaft
|
Ratio TOTAL |
1 (no transmission ratio), as the motor and the gearbox motor shaft are rotating at the same shaft speed |
|---|---|
|
Ratio IN |
1 (no transmission ratio) |
|
Ratio OUT |
0.5 (calculated from number of teeth on pinion and gear: 21/42 = 0.5) |
|
Foreign IN coupling |
Motor shaft |
|
Self IN coupling |
Own motor shaft |
|
Self OUT coupling |
Pinion on motor shaft or input shaft (21 teeth) |
|
Foreign OUT coupling |
Gear on driven shaft or output shaft (42 teeth) |
|
Speed signal |
Motor speed sensor / Motor TCP speed information |
Gearbox output shaft
|
Ratio TOTAL |
0.5 (calculated from number of teeth on pinion and gear: 21/42 = 0.5) |
|---|---|
|
Ratio IN |
0.5 (no transmission ratio) |
|
Ratio OUT |
1 (no transmission ratio) |
|
Foreign IN coupling |
Input shaft pinion (21 teeth) |
|
Self IN coupling |
Output shaft gear (42 teeth) |
|
Self OUT coupling |
Own driven shaft |
|
Foreign OUT coupling |
None / component group in next aggregate (if applicable) |
|
Speed signal |
Motor speed sensor / Motor TCP speed information |