Kruger Ecowatt K320 Series Operation Manual page 134

Ecowatt Drive K320 series
®
connection;
At this point, the belt may slip during high-speed running and cause inaccurate positioning, it
is recommended to install proximity switch on the spindle.
c) The encoder is installed on the spindle, and the motor shaft is connected to the spindle
with belt, the drive ratio is not necessarily 1:1.
At this point, set P20.06 (speed ratio of the mounting shaft between motor and encoder), and
set P22.14 (spindle drive ratio) to 1. As the encoder is not installed on the motor, the control
performance of closed-loop vector will be affected.
Proximity switch positioning supports the following spindle positioning modes:
a) The encoder is installed on the motor shaft, the drive ratio between motor shaft and
spindle is not necessarily 1:1;
At this point, it is required to set P22.14 (spindle drive ratio).
5. Commissioning procedures for digital positioning
The diagram for digital positioning is shown below.
Running command
Cyclic positioning
enable signal terminal
Positioning completion signal
Step 1–4: These four steps are the same with the first four steps of the commissioning
procedures for closed-loop vector control, which aim to fulfill the control requirements of
closed-loop vector control.
Step 5: Set P21.00=0011 to enable digital positioning. Set P21.17, P21.11 and P21.12 (set
positioning displacement) according to actual needs; set P21.18 and P21.19 (set positioning
speed); set P21.20 and P21.21 (set acceleration/deceleration time of positioning).
Step 6: Single positioning operation
Set P21.16.bit1=0, and the motor will carry out single positioning action and stay in the
positioning position according to the setup in step 5.
Frequency
Positioning
speed
P21.22 Hold time
of positioning arrival
P21.25 Hold time of positioning completion signal
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Basic operation guidelines
Time