ifm electronic JN2100 v.2.2.0 - Manual (Page 26)

Inclination sensor JN
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10 Vibration measurement
10.1 Measurement mode (SDO index 2047h)
The JN2100 sensor can be operated in four different measurement modes:
● Angle measurement (SDO index 2047h = 0)
● Vibration measurement (Veff & aPeak) (SDO index 2047h = 1)
● Raw acceleration (AC measurement / dynamic) (SDO index 2047h=2)
● Raw acceleration (DC measurement / static) (SDO index 2047h=3) →
automatic selection of ±2 g
The table shows which settings can be combined:
OD index 0x204A OD index 0x2047
Measuring range Angle
measurement
Veff & aPeak Raw acceleration
AC measurement Raw acceleration
DC measurement
± 2g X X X X
± 4g O X X O
± 8g O X X O
(X → possible; O → not possible)
The angle measurement and raw acceleration (DC measurement) is only possible at ± 2 g.
10.1.1 Vibration measurement (Veff & aPeak) (SDO index 2047 = 1)
If the vibration measurement is active, the sensor provides two different
characteristic values.
The first characteristic value (SDO index 5C10h) provides the vibration velocity
(v effective [1/10 mm/s]) and the second characteristic value (SDO index 5C11h)
the maximum acceleration (a peak [mg]).
Axis selection is only possible in this option.
10.1.2 Raw acceleration measurement (AC) (SDO index 2047h = 2)
In this mode the values of the 3 axes (X/Y/Z) are provided with sign. The output
values of all axes is 0 mg.
This option is possible up to a measurement range of ± 8 g.
10.1.3 Raw acceleration measurement (DC) (SDO index 2047h = 3)
When this option is active, the values of the 3 axes (X/Y/Z) are provided with sign.
The difference to the previous option is that now measurement is made statically
at ± 2 g and in horizontal position of the sensor the earth's gravitational force acts
on the Z axis (9.81 m/s² → 1000 mg).