Siemens LMV5 Quick Start Manual page 28

VSD Mounting 2-6
AGG5.310 Shaft – mounted speed sensor kit (LMV52 only)
The AGG5.310 shaft mounted speed sensor kit consists of a three fingered speed wheel and a
sensor along with mounting hardware.
Please see Section 10-1 for specifications.
Figure 2-6.1
Speed wheel and sensor mounting
First, ensure that a section of shaft extends outboard of the
rear bearing of the motor (fan cooled motor).
The installation will not be possible if the shaft does not
extend outboard of the rear bearing.
Next, remove the fan cover.
The shaft must be drilled and tapped. It is possible to drill
the shaft with a hand drill, but it is preferable to use a drill
press before the motor is mounted.
If a hand drill is used, a guide should be utilized to ensure
that the drilled hole is perpendicular and concentric to the
end of the shaft.
The drilled hole must be a diameter of 6.8mm, and be 7/8"
deep. This is done to accommodate the M8 x 1.25 non-
bottoming tap. The thread engagement of the shoulder bolt
is approximately ½", so the tap should run to the bottom of
the drilled hole. The M8 x 1.25 tap is absolutely necessary,
but the hole can be drilled with a 17/64" drill bit and
satisfactory threads will result.
Install the speed wheel with the shoulder bolt and the large
spring washer.
The speed wheel can be reversed (flipped over) so that the
arrow on the speed wheel points in the correct direction of
motor rotation.
The shoulder bolt should be tightened with about 50 in*lb
(6 Nm) of torque.
LMV5 QSG Rev 4 Sec 2 Pg 12 www.scccombustion.com