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Peakanalyzer Installation Manual Version 2.6
Picture 5: Connection of external sensors via overvoltage protection to the Peakanalyzer
If the Peakanalyzer is equipped with optional overvoltage protection for external sensors, the
connection of signal inputs is done at the overvoltage protection clamps 11, 12 and following
as shown in Picture 5.
2.3.5 Connection of speed sensors to terminals of type EL5151
The speed sensors are directly connected to the terminals 01, 02, 03 or 04. These are
incremental encoder terminals of the type EL5151.
The output signal of the speed sensor is connected to the clamp labeled with a black C on
white ground. The Peakanalyzer then works with a very accurate impulse time measurement
with an accuracy of 1 ns. This measurement method also results in a very accurate speed
value if there a multiple impulses per rotation and not equidistant distributed. This is the
recommended measurement method. This method works until a maximum impulse frequency
of 1 kHz. Picture 4 shows the connection of two speed sensors to the terminals 01 and 02 in
the impulse time measurement method.
If the maximum impulse frequency is above 1 kHz, the speed signal has to be connected to
the clamp labeled with a black A on white ground.
If the speed signal is given from an incremental encoder that delivers a gray code signal and
additionally the direction of rotation should be measured, the phase shifted tracks A and B
should be connected to the clamps labeled with a black A or B. This is shown on terminal 03
in Picture 4.
The supply voltage for the speed sensors is also provided by these terminals. The clamp with
a black + on red ground de24 V and the clamp with a black - on blue ground provides