Inclination sensor JN
22
Measuring method
Output 1
Output 2
Vibration measurement
Index 4106: 1
Vibration velocity v
eff
Vibration acceleration a
peak
The measured values can be mapped to the output signal range of 4...20 mA or
2...10 V, depending on the selected measuring method (inclination or vibration).
The parameters ASP (analogue start point) and AEP (analogue end point) as from
ISDU index 620 serve this purpose.
The start and end points are indicated as a signed 16-bit integer value according
to the measuring method, e.g. -4500 for -45.00 ° or 1200 for 1.200 g.
The analogue start point ASP always has to be smaller than the analogue end point AEP; otherwise
setting of the parameters is refused by the sensor.
The minimum distance between ASP and AEP of 1 ° for inclination measurement or 1 mm/s and 1 mg
for vibration measurement always has to be observed; otherwise setting of the parameters is refused
by the sensor.
If an ASP is to be set to a new value which is above the respective AEP, the AEP has to be set to a
considerably higher value beforehand. Otherwise the sensor refuses setting of the parameter.
In analogy, AEP has to be adapted to ASP before changing.
The values configured for the analogue start and end points remain unchanged even if other
parameters (such as quadrant correction ISDU index 4103 and angle calculation method ISDU index
4100 in the event of inclination measurement) are changed.
The user has to ensure that the values for the start and end points are in a suitable range before
parameters are changed on the sensor to be able to use the entire output value range for current
(4...20 mA) or voltage (2...10 V).
Example (original setting)
Angle calculation perpendicular (ISDU index 4100: 0)
Quadrant correction off (ISDU index 4103: 0)
Analogue output mode current (ISDU index 660: 1)
Analogue start point 2 - 90.00 ° (ISDU index 630: -9000)
Analogue end point 2 + 90.00 ° (ISDU index 631: 9000)
The angle values measured for the second axis vary in the range -90° to +90
° on the basis of the selected angle calculation and the switched-off quadrant
correction. That results in a linear value range of 4...20 mA (shown in green) for
the second current output.
New setting
Angle calculation Euler (ISDU index 4100: 1)
The angle values measured for the second axis now vary in the range -0° to
+180°on the basis of the changed angle calculation.
Since the analogue start and end points for this axis remain to be set to -90 ° or
+90 °, only the angle range between 0 ° and +90 ° can be mapped to the current
