ACU-RITE SENC 150 User manual

Installation Manual 385076-000
P.N. 385076.130 Ed B 2/06 1Acu-Rite Companies Inc.
Carriage
Table
Base
Spar
1/4-20 x 1/2” BHCS (2)
& * Flat washer .017” thk.
*1/4-20 x 1” SHCS (2)
& Flat washer
Spacer
*8-32 x 3/4” SHCS (2)
Reading head bracket
SENC 150 Encoder Installation Manual For:
Chevalier FSG-2A 1224 Surface Grinder
Cross Feed “X” Axis
Mounting Information...
These are application instructions for mounting the
Cross feed “X” axis SENC 150 encoder.
Before proceeding:
³Please read the instructions completely.
³Insure that the correct length encoder is being used
for the total travel.
³Keep the reading head centered during installation.
³Clean the mounting surfaces.
³Save the alignment brackets with the Encoder
Reference Manual after installation is completed.
First Steps ...
Machine
Move the carriage to its center of travel.
Mark the axis so that it can be re-centered easily.
Encoder
Unpack encoder in a safe, convenient location.
Do not remove the reading head alignment
brackets until instructed.
Center reading head ...
•Slide the reading head and brackets along the scale
case until the center marks on the scale case and
reading head are aligned.
Alignment bracket (2)
Align
center
marks
Cross Feed Installation ...
*Supplied with encoder hardware
SENC 150 Encoder
M4 x 8mm SHSS (3)

Installation Manual 385076-000
P.N. 385076.130 Ed B 2/06 2Acu-Rite Companies Inc.
•These instructions will guide you through installing
the encoder as shown in this view.
Cable exit ...
SENC 150 Encoder Installation Manual For: Chevalier FSG-2A 1224
Surface Grinder: Cross Feed “X” Axis
T-10 Torx screw (2)
Plug
Cover plate
Armor cable hex crimp
•Determine the cable exit direction before installing
the encoder.
•To change the cable exit direction; remove the cover
plate and rotate the cable 180°.
Spar installation ...
Encoder orientation ...
Spar
Encoder Assembly
flush surfaces this side
(side 1 & 2)
Reading head
mounting bracket
Viewed from the front
of the grinder
Machine
base
Machine
cross feed
•Locate the spar mounting hole using the
dimensions shown.
•Drill and tap for a 1/4-20 x 1/2” deep.
•Attach the spar to the cross feed.
•Fasten the spar at one end, and align the top
surface to the cross feed travel.
•Transfer punch the other end mounting hole.
•Drill and tap location for a 1/4-20 x 1/2” deep.
Vinyl cable grommet
•Align the front surface of the spar, shim if required
between the spar and machine if necessary.
•Align the top surface of the spar as done previously to
within .010” TIR to the cross feed travel.
•Secure spar in place maintaining alignment.
Mounting hole
1/4-20 x 1/2” BHCS (2)
* Flat washer .017” thk. (2)
Front surface
to be parallel
to the carriage
travel to
within .010”
Front
surface
Viewed from the
back side
13.93”
.56
CROSS
FEED TRAVEL
Align the top of spar
to within .010” TIR
Transfer punch location
1/4-20 x 1/2” BHCS

Installation Manual 385076-000
P.N. 385076.130 Ed B 2/06 3Acu-Rite Companies Inc.
SENC 150 Encoder Installation Manual For: Chevalier FSG-2A 1224
Surface Grinder: Cross Feed “X” Axis
•With the carriage at the center of travel, attach the
bracket to the reading head.
•Transfer punch the two mounting hole locations to
the base using the spacer as a guide.
•Remove the bracket, drill and tap the locations for
1/4-20 x 1/2” deep.
•Insert the encoder into the spar as shown.
•Center the encoder in the spar from end to end.
•Lock in place by tightening the M4 set screws.
Attaching the reading head ...
Encoder installation ... M4 x 8mm SHSS (3)
*8-32 x 5/8” SHCS (2)
Transfer punch hole locations (2)
Drill and tap for 1/4-20 x 1/2” deep
Reading head
bracket and spacer
•Insert the *8-32 x 5/8” SHCS, but do not tighten.
•There will be a gap of .03” - .18” between the
bracket and the reading head.
•Insert and set each leveling screw by placing a .001”
- .003” feeler gage between the set screw and the
bracket.
•Adjust each set screw until a slight drag is felt on
the feeler gage.
• Evenly tighten the two 8-32 SHCS.
Reading head
leveling set screws (3)
• Attach the bracket with the spacer to the base.
• A gap of .03” - .18” will exist between the reading
head and the bracket.
• Adjust the bracket so that the head mounting holes
align with the bracket and secure in place.
Spacer
1/4-20 x 1” BHCS (2)
Reading head bracket
Gap: .03” - .18”
1/4 Flat washer x
.09” thk.

Acu-Rite Companies Inc.
One PrecisionWay • Jamestown, NY 14701
Installation Manual 385076-000 4P.N. 385076-130 Ed B 2/06
Encoder button up ...
•Use allen wrench from set screw adjustment to
slide alignment brackets away from the reading
head.
•Remove alignment brackets and save.
•Move the axis through its full travel. Confirm that
the assembly does not interfere with the machine
movement.
Slide brackets back
away from the
reading head and
cable Twist brackets
45° to remove
•With the down feed axis installation complete (if
used), route the cables providing sufficient slack
loops for machine movement to the readout.
•Secure cables by fastening with clips or ties.
•Attach the linear encoder connectors to the readout.
•Complete the installation by following the steps in
“Checking Your Installation” section in the encoder
“Reference Manual”.
SENC 150 Encoder Installation Manual For: Chevalier FSG-2A 1224
Surface Grinder: Cross Feed “X” Axis