Allen-Bradley 1440-SDM02-01RA, User Manual, Page: 33 / 168

Rockwell Automation Publication 1440-UM001D-EN-P - September 2016 33
Install the XM-124 Standard Dynamic Measurement Module Chapter 1
Connect the Tachometer Signal
The XM-124 module provides one tachometer input signal. The signal
processing that is performed on the tachometer signal depends on the
configuration of the module. See
page 83 for a description of the tachometer
parameters.
Connecting a Magnetic Pickup Tachometer
Figure 12 shows the wiring of a magnetic pickup tachometer to the terminal
base unit.
Figure 11 - Magnetic Pickup Tachometer Signal Connection
IMPORTANT If you are not using the tachometer input, set the Pulses per Revolution
parameter to zero. This setting disables the tachometer measurement
and prevents the module from indicating a tachometer fault (TACH
indicator flashing yellow). A tachometer fault occurs when no signal
pulses are received on the tachometer input signal for a relatively long
period.
Shielded tacho sensor