X90 mobile modules
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X90 mobile system User's manual V 1.20 - Translation of the original manual
5.4.1.3.5 Influences by other option boards
Option board X90CM480 can be used in the option board 2, option board 3 and option board 4 slots. The signal
lines of the option board are therefore always routed via connection X1.C of the CMC header. Since the signal
lines are not shielded in the area of the CMC header, the measurement signal may be affected on adjacent lines
of connection X1.C of the CMC header due to high-frequency signals from other option boards (e.g. PWM option
board, etc.). In order to avoid these influences to a large extent, it is recommended to select the positioning of the
option boards in such a way that no high-frequency signals are conducted via connection X1.C of the CMC header.
The signals of X90CM480 option boards with frequency components up to 10 kHz are no problem here.
5.4.1.3.6 Gain curve
The following diagram shows a typical gain curve for the module.
-60
-50
-40
-30
-20
-10
00
10
0,001
0.01
0.1
1
10
100
1,000
10,000
100,000
Filter damping in dB
Frequency in Hz
5.4.1.3.7 Settling time
The input high-pass cutoff frequency of the AC voltage input (limit frequency of 36 mHz) means that a certain
amount of settling time is required after changing the DC offset of the pending signal.
•
Settling time of approximately 30 seconds at 100 mV/g sensor sensitivity with an accuracy of 0.4 g.
•
Settling time of approximately 60 seconds at 100 mV/g sensor sensitivity with an accuracy of 0.001 g.
•
The respective settling time must be allowed to pass in order to achieve accurate measurement results
when an open circuit occurs. Because of this, all characteristic values and analog input values are set to
0 by the module during the first 30 seconds after a restart or wire breakage.
