SCHUNK PCFC, Assembly And Operating Manual, Page: 31 / 40

Maintenance
8.3 Recalibrate position sensor
NOTE
To calibrate the position sensor, SCHUNK recommends the PuTTY
software with a baud rate of 115200.
1. Connect the product to the serial interface.
2. Enter the "ManCal" command to start the calibration.
✓
The LED "RED_OUT_TRVL" flashes with 10 Hz.
✓
The message "ManCal started, move to end of stroke" is
output in the interface.
3. Retract or extend the piston completely.
4. Enter "ManCal" command again.
✓
The LED "RED_OUT_TRVL" flashes with 4 Hz.
✓
The message "CalStep:1" is output in the interface.
✓
The message "Position measured: X" is output in the
interface. X is the voltage [mV] which the position sensor
reads.
5. Move piston by 1 mm.
6. Repeat action steps 4 and 5 a further 12 times until the piston
has reached the maximum stroke of 12 mm.
✓
During the last CalStep the measurements of the position
sensor are validated.
✓
If successful, the message "Calibration Completed" is
displayed and each LED flashes once.
✓
In case of failure the message "Calibration error" is
displayed and each LED flashes three times at 1 Hz.
✓
The following table shows the blinking frequency of the
LEDs per calibration step.
LEDs
LED Full extend
(0 mm)
Start of
travel
(0.5 mm)
Safe travel
zone
(0.5-11.5 mm)
End of travel
(11.5 mm)
Robot crash
(12 mm)
RED_FULL_EXTND Red Red
GREEN Green Green Green
RED_OUT_TRVL Red Red
31 01.00 | PCFC | Assembly and Operating Manual | en | 1454631