ACU-RITE Microscale User Manual
MicroScale
™
REFERENCE MANUAL
ACU-RITE
® ®
MicroScale Table of Contents
Page
Introduction / Supplied items ................................................... 2
Key Points / Tolerances ............................................................. 3
Linear Encoder Dimensions ...................................................... 4
Spar Dimensions ....................................................................... 5
Mounting Requirements ........................................................... 6
Typical Mounting ...................................................................... 7
Encoder Installation Procedure ................................................. 8
Page
Checking the Installation ......................................................... 10
Troubleshooting ....................................................................... 11
Mechanical Specifications ....................................................... 12
Output Signals and Pin-Outs ................................................... 13
Electrical Specifications .......................................................... 14
The ACU-RITE warranty and
30-Day Red Carpet warranty service ....................................... 15
Front mount
Adjustable
front mount
Base mount
Bottom mount
bracket
bracket
Rear mount
bracket
• Installation brackets and kits are available.
• Your Authorized ACU-RITE Distributor can assist you in selecting
brackets and tools for your installation.
1 ACU-RITE
®
Introduction / Supplied Items MicroScale
The MicroScale Precision Glass Scale Linear Encoder provides the
accuracy and reliability of an ACU-RITE measuring system in a very
small cross-section with digital output (analog output available).
Features and options include:
• Resolutions of 0.5, 1 or 5µm.
• Accuracy grades of ± 3 or ± 5 µm / 1000mm.
• Position Track.
• Vinyl or Armor cables of 2, 5, 10, 15, & 20 ft. lengths.
• Mounting fasteners, center supports, and backup spar.
• Installation tools, brackets, and accessories.
The MicroScale is especially useful for applications with limited space
such as X/Y stages and compact metrology equipment. Contact your
ACU-RITE Distributor for assistance with selection of product
options and accessories.
Shipping carton
contents
A
A) MicroScale linear encoder
MicroScale
1” - 18”
D
E
C
B) Backup Spar
C) Reference Manual
ACU-RITE
®
For future ordering information or warranty service, record the linear
encoder catalog and serial numbers.
Catalog # Serial #
Axis # 1: _____________________________________
Axis # 2: _____________________________________
Axis # 3: _____________________________________
Axis # 4: _____________________________________
Date of Purchase _____________________________________
Distributor: _____________________________________
Address: _____________________________________
Telephone: _____________________________________
Shipping carton
contents
A
D) Cable Mounting Hardware
D
E
MicroScale
over 18”
C
F
B
E) Linear Encoder Mounting Hardware
F) Backup Spar Mounting Hardware
2
MicroScale Key Points / Tolerances
Use this information to plan your Linear Encoder installation.
• Understand your mounting requirements.
• Follow kit instructions when using an ACU-RITE bracket kit.
• Mount encoders close to ways to insure system accuracy.
• Mount with lip seals down and away from the work area.
• Brackets should be short and rigid.
• Surfaces must be in good condition, clean and free of
dirt and paint.
• Do not remove shipping brackets until instructed.
• Shipping bracket spacers can be used to insure .059” gap.
• Mount from either side to obtain desired cable exit direction.
Shipping bracket removal clearance
1.00
Slide brackets away
from the reading head
1.00
// .005 B
B
-A- = Machine travel
Center support surface
Reading head
assembly
Equal
required
Equal
// .005 A
// .005 A
Gap
.059 ±.005”
[1.50]
Scale assembly
// .005 A
// .005 A
• Tolerances of .005” TIR apply to all mounting dimensions.
• Center support surface required for all measuring
lengths when not using a back up spar.
.26 [6.6]
Min.
Measuring length + 1”
[25.4] over travel
.037 [.9]
Min.
• Limit equipment travel to less than measuring length.• Allow clearance for shipping bracket removal.
3 ACU-RITE
®
Linear Encoder Dimensions MicroScale
.280
[7.11]
Typ.
End cap
Reading
head
.140
[3.55]
.175 [4.57]
.295
[7.50] M3 x .25 [6.31]
assembly
.463
[11.76]
Typ.
.213
[5.41]
Typ.
deep min.
Scale assembly
Measuring length + 4.65 [118]
Measuring length + 4.09 [103.9]
for M4
Hex nut
1.85
[47.00]
2.775
[70.50]
2.350
[59.69]
.138
[3.50]
Scale case
Mounting hole
Strain relief
[4.00] min.
[3.81]
and cable
Ø .160
.150
.335
[8.51]
Ø .30
[7.6]
Armor
2.0 [50] Approx.
min bend radius
of armor
.280
[7.11]
.159
[4.04] Typ.
Ø .16
[4.1]
Vinyl
.670
[17.00]
1.182
[30.00]
Align both
surfaces
.02
[0.5]
1.352 [34.34]
.652
[16.56]
.482
[12.25]
.Gap
.059 ± .005
[1.50]
.170
[4.32]
.840
[21.34]
Spar
.170
[4.32]
ACU-RITE
®
4
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