Lenze 931W - Manual (Page 67)

Software implementation and parameter setting
Reference menu
Reference type
5

67 HB 13.0001-EN 3.0
The reference run to an edge as well as the above settings are clarified by examples.
Reference type ”Edge”, positive reference speed,
”Reference” as ”Active high”
Reference type ”Edge”, positive reference speed,
”Reference” as ”Active low”


 








Example 1 Example 2
Reference type ”Edge”, negative reference speed,
”Reference” as ”Active high”
Reference type ”Edge”, negative reference speed,
”Reference” as ”Active low”


 




 


Example 3 Example 4
 Edge signal level  V
reference
 Position  Edge
 Starting point
Fig. 6 Examples for referencing to an edge
In example 1, referencing is carried out at a positively set reference speed with the
reference type ”Edge” to a high level of the input. At starting time, the signal on the digital
input ”Reference” is low. The drive accelerates to the reference speed and traverses in
positive direction at reference speed until the positive edge on the ”Reference” input is
reached. The 0 position is set here, and the drive is stopped.
The same preconditions apply to example 2. The level of the ”Reference” input, though, at
starting time represents the ”High” status. The drive traverses at negative speed until the
falling edge of the ”Reference” signal is recognised. After the drive is stopped and
accelerated again, it traverses over the edge at positive speed. The 0 position is set and the
drive is stopped.