U-ONE
®
-SAFETY-LWL
Configuration manual
USL_KonfigManual-en_R3
15
3.5 Calibrating the position system
The position system is calibrated (adjusting the internal group processing to the reality at the
installation location) using “Edit calibration settings”
:
The calibration settings are displayed and edited here. Settings ca
n be changed using “Start
configuration”.
NOTE!
Restricted system resolution
The 15 Bit Multiturn area (32768 revolutions) of the USL(H) 42 is limited to
32000 usable revolutions.
Position system calibration does not apply to the modules UO-SPN-1,
UO-SPB-1 and UO-EPB-1.
3.5.1 Defining working area limits
The working area for the application must always be between the upper and lower working area
limits. If the working area limits are not met or are exceeded, an error is triggered.
NOTE!
Always keep sufficient distance between the working area limits and the working
area, to prevent working area limit errors during normal operation.
3.5.2 Determining the calibration factor
The calibration factor is the adjustment factor between system units and device units. This
transmission ratio is assumed to be constant.
If the calibration factor is unknown, it can be determined with (see sec. 3.5.2.1). 2 calibration
points are used to determine the calibration factor. These should be as far apart as possible and
may not be outside of the working area limits.
Determining the calibration factor using two calibration points
1. Enter calibration point 1 and calibration point 2. The following restrictions apply:
Lower working area limit < calibration point 1
Calibration point 1 < calibration point 2
Calibration point 2 < upper working area limit
2. Approach calibration point 1 and shut off drive,
press the button.
The current position is adopted as calibration point 1.
3. Approach calibration point 2 and shut off drive, press the button. The current position
is adopted as calibration point 2.
4. The calibration factor is now calculated and inserted into the relevant window.
Fig. 3-3: Determining the calibration
factor