Process Data; Position Counter - Lenze i55AE125B Manual

11.17

Process data

This chapter describes additional functions that provide process data for a higher-level Con-
troller.
11.17.1

Position counter

This function counts the number of motor revolutions. The current counter content (actual
position) can be output as process data value via network to implement a simple position con-
trol in a higher-level Controller.
Preconditions
An HTL encoder must be connected to and set at the digital inputs DI3/DI4.
•
encoder
^ 496
As an alternative, the number of motor revolutions from the motor model can be recon-
•
structed. For this purpose, the motor control type "Sensorless control (SL PSM) [3]" must
be selected and set in 0x2C00
PSM)
^ 178
The position control must be implemented in the Controller.
•
Details
The signal source for the position counter is selected in
counter can count forwards and backwards. The current counter content (actual position) is
displayed in 0x2C49:003 (P711.03). After the maximum or minimum value has been reached,
an overflow takes place.
Reset position counter:
The position counter is reset when the supply voltage is switched on.
•
The position counter can be set manually via the "Position counter reset"
•
(P400.54) function or the NetWordIN1
NetWordIN1, the "Position counter reset [54]" function must be assigned to a bit of the
data word. Depending on the selection in
either edge-controlled or status-controlled.
Parameter Name / value range / [default setting]
0x2631:054 Function list: Position counter reset
(P400.54) (Function list: PosCounter reset)
• From version 03.00
• For further possible settings, see parameter
0x2631:001
0 Not connected
0x2C49:001 Position counter: Signal source
(P711.01) (Position counter: Signal source)
• From version 03.00
0 Disbled
1 Feedback 1 (DI3/DI4)
5 Internal motor model
(P300.00). 4Sensorless control for synchronous motors (SL-
0x4008:001 (P590.01)
0x2C49:002
(P400.01).
^ 532
4HTL
0x2C49:001 (P711.01). The position
0x2631:054
data word. For a reset via
(P711.02), the reset can be made
Info
Assignment of a trigger for the "Position counter reset" function.
Trigger = FALSE-TRUE edge: Reset position counter manually.
Trigger = FALSE: no action.
Notes:
• In 0x2C49:002 (P711.02) it can be selected whether the reset is to be
effected edge-controlled (default setting) or status-controlled.
Selection of the signal source for the position counter.
Position counter is deactivated.
The motor revolutions are counted that are provided by an HTL encoder
connected to the digital inputs DI3/DI4.
• A motor revolution always equals to the increments/revolution set in
0x2C42:001 (P341.01) for the HTL encoder. This applies to all types of
HTL encoders that can be set in
(AB) [1]", "Pulse train [2]" and "Pulse train/direction [3]".
• The counter content will be updated as well if the power section is
switched off.
• If an HTL encoder is used without detecting the direction of rotation,
it is only counted forwards.
The motor revolutions reconstructed from the internal motor model of
the sensorless control (SL PSM) are counted.
• The counter content will not be updated if the power section is
switched off.
• After restarting the power section, the counting of the last counter
content is continued.
Additional functions
Process data
Position counter
0x2630:002 (P410.02): "HTL encoder
493