ACU-RITE ENC 250SS - Manual (Page 9)

Acu-Rite Companies Inc.
ENC 250™ SINGLE SECTION Encoder Installation Procedure
7
• Move the machine axis to its center of travel.
• Hold the encoder to the intented mounting location, and
position for the required clearances. Allow minimal
distance required for the reading head brackets.
• Mark the “most centered” scale mounting hole location to
the machine with a center punch.
• Remove encoder, drill / tap location for a [1/4-20 x 1/2”] M6
x 12mm deep.
These steps apply to all mounting conditions. Although this
may not pictorially represent your application, your
installation procedure should follow these steps.
• Adjust drill depths and fastener lengths as required.
• When instructed on page 10, adjust the leveling set screws
as follows:
1. Insert, but do not tighten the [8-32] 4mm reading head
screws.
2. Use a [.001-.003”] .025 - .076mm shim between the
leveling set screws and mounting surface.
3. Adjust each set screw until a slight drag is felt on the
shim.
4. Evenly tighten the [8-32] 4mm reading head mounting screws.
• Contact your Authorized Distributor should you require
additional assistance.
CL
Movable axis
(carriage)
Most centered scale
mounting hole
Encoder
• Attach the 1/4-20 installation stud tool.
• Slide the scale case onto the stud at the same hole location.
Stud tool
The stud tool is used
temporarily to support
the encoder while
locating the mounting
holes
• Align the top of the scale case.
• Transfer punch the furthest right mounting hole location
before the expansion cover.
• Allow the scale to swing down, drill / tap location for a [1/4-
20 x 1/2”] M6 x 12mm deep.
Align to within [.012”] .3mm TIR to the axis
travel measuring over each hole location
Right expansion cover
Axis Travel
Hole location