ENC 150™
REFERENCE MANUAL
®
ACU-RITE
ENC150 Table of Contents
Page
Introduction .......................................................................... 2
Mounting Preparation .......................................................... 3
Mounting Information ......................................................... 4
Encoder Dimensions ............................................................ 5
Backup Spar Dimensions ..................................................... 6
Mounting Requirements ...................................................... 7
Typical Mounting (s) ............................................................ 8
Encoder Installation Procedure ........................................... 9
Page
Spar Installation Procedure ................................................. 11
Checking your Installation ................................................... 13
Electrical Shielding ............................................................. 14
Troubleshooting .................................................................. 15
Mechanical Specifications .................................................. 16
Output Signals and Pin-Outs ............................................. 17
Electrical Specifications ..................................................... 18
The ACU-RITE Warranty ................................................... 19
Brackets ...
Reading Head
Quill
mounting
Off set
mounting
Motor mounting
Combination
reading head
w/extension
Side mounting
• Installation brackets and kits are available.
• Your Authorized ACU-RITE Distributor can assist you with the
proper selection of these for your installation.
1 ACU-RITE
®
Introduction / Supplied Items ENC 150
The ENC 150 precision glass scale linear encoder provides the
accuracy and reliability of an ACU-RITE measuring system with
digital output (analog output available). Features and options
include:
• Resolutions of .5, 1, 2, 5, or 10 µm.
• Accuracy grades of ± 3, and ± 5 µm / 1000 mm.
• Vinyl or Armor cables of 2, 5, 10, 15 and 20 ft. length.
• Fasteners, center supports, and backup spars.
• Brackets and accessories.
Contact your Authorized ACU-RITE Distributor for assistance
with the selection of product options and accessories.
Contents
< 60”
A
D
E
C
For future ordering information or warranty service, record the
linear encoder catalog number located on the scale assembly tag,
and the serial number from the reading head tag.
Catalog No. Serial No.
Axis # 1: _______________ __________________
Axis # 2: _______________ __________________
Axis # 3: _______________ __________________
Axis # 4: _______________ __________________
Date of purchase: _______________ __________________
Distributor: ____________________________________
Address: ____________________________________
Telephone: ____________________________________
Contents
> 65”
A
C
F
E
D
B
A) ENC 150 Linear Encoder
B) Backup Spar
C) Reference Manual
ACU-RITE
®
D) Cable Mounting Hardware
E) Linear Encoder Mounting Hardware
F) Backup Spar Mounting Hardware
2
ENC150 Mounting Preparation
Please follow these preparation guide lines.
• Understand your mounting requirements.
• Mount with lip seals down and away from the work area.
• Brackets should be kept as short as possible and rigid.
• Surfaces must be in good condition, clean, and free of dirt. Remove
paint from machined mounting surfaces.
• Alignment brackets must not be removed until
instructed.
1.150
“L”
“L” = Measuring length + 1.75” nominal over travel
1.150
• Machine travel can not exceed the encoder measuring length.
• Either limit machine travel or obtain correct length scale.
• Never mount with lip seals upward or towards work area.
Cable direction
Vinyl cable grommet
Plug
Cover plate
T-10 Torx screw (2)
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°.
3 ACU-RITE
®
Mounting Information ENC150
Use this information to plan your Linear Encoder installation.
• Mount the linear encoders close to machine guide ways to ensure
system accuracy.
• One side of the linear encoder addresses flush mounting surfaces,
and the opposite side addresses offset mounting surfaces.
• If space between the reading head and the mounting surface
exceeds .18”, use a spacer or mounting bracket to reduce space.
• ACU-RITE bracket kit instructions provide step by step installation
procedures.
Alignment bracket removal clearance
Alignment
bracket
1.0
[25mm]
1.38
[35mm]
Alignment
bracket
Move bracket past
the cable strain relief
1.876 .010 [47.6]
.010 A
//
Scale case
Equal Equal
-A- = Machine Travel
Reading head
.010 A
//
//
0.0 ± .010
.010 A
//
// .010 A
.010 B
B
• Tolerances of .010” TIR apply to all mounting dimensions.
• Center support mounting surface required for 24” through 60”
linear encoder measuring lengths mounted without a spar.
Flush
mounting
Offset
mounting
Backup spar
mounting
• Allow clearance for alignment bracket removal.
• Alignment brackets must not be removed until
instructed.
ACU-RITE
®
• Use reading head leveling set screws when surfaces are not flush.
• Reading head bracket required for a space >.18”.
4
ENC150 Encoder Dimensions
.944 [24.0]
.370 [9.4]
.121 [3.11]
∅ For 8-32
(or M4) SHCS
mounting
screw
.56 [14.4]
Measuring length + 6.375
Measuring length + 5.437 .469 [11.9]
Mounting hole
Scale case
∅ .500 C’bore
∅ .313 Thru
1.125
[28.6]
2.250
[57.1]
Reading Head assembly
Over travel 1.75
.32
[8.4]
Armor
.20
[5.2]
Vinyl
End Cap
1.25 [32]
Min. bend rad.
.810 [20.6]
.750 [19.0]
1.876
[47.6]
.810 [20.5]
1.060 [27.0]
2.198 Ref.
[55.8]
.700 [17.8]
.285 [7.2]
.562 [14.3]
1.12
[28.5]
.937 [23.8]
.570 [14.5]
.750 [19.0]
1.440
[36.6]
.710 [18]
.048 [1.2]
.250 [3.4] Spar
5 ACU-RITE
®
Backup Spar Dimensions ENC 150
Backup spar Linear Encoder L A X No. B
Part Number Measuring Length Places
385102-000 2 8.312 1.656 2 5.000
385104-000 4 10.312 2.656 2 5.000
385106-000 6 12.312 1.156 2 10.000
385107-000 7 13.312 1.656 2 10.000
385108-000 8 14.312 2.156 2 10.000
385110-000 10 16.312 3.156 2 10.000
385112-000 12 18.312 4.156 2 10.000
385113-000 13 (Special) 19.312 1.44 2 16.43
385114-000 14 20.312 5.156 2 10.000
385116-000 16 22.312 1.156 3 10.000
385118-000 18 24.312 2.156 3 10.000
385120-000 20 26.312 3.156 3 10.000
385122-000 22 28.312 4.156 3 10.000
385124-000 24 30.312 5.156 3 10.000
385126-000 26 32.312 1.156 4 10.000
385128-000 28 34.312 2.156 4 10.000
385130-000 30 36.312 3.156 4 10.000
385131-000 31.5 38.030 4.015 4 10.000
--- - - -
“L” ± .015
“A” ± .015
5.000 typ. ± .015
Non
Accumulative
“B” typ. ± .015
Non Accumulative
“A” ± .005
“E”
Backup spar Linear Encoder L A X No. B
Part Number Measuring Length Places
385132-000 32 (“E” 34.812) 35.687 .437 4 11.604
385135-000 35 (“E” 40.437) 41.312 .437 5 10.109
385136-000 36 42.312 1.156 5 10.000
385140-000 40 46.312 3.156 5 10.000
385142-000 42 48.312 4.156 5 10.000
385148-000 48 54.312 2.156 6 10.000
385152-000 52 58.312 4.156 6 10.000
385154-000 54 60.312 5.156 6 10.000
385160-000 60 66.312 3.156 7 10.000
with Encoder 65 71.312 5.656 7 10.000
with Encoder 72 78.312 4.156 8 10.000
with Encoder 78 84.312 2.156 9 10.000
with Encoder 84 90.312 5.156 9 10.000
with Encoder 90 96.312 3.156 10 10.000
with Encoder 100 106.312 3.156 11 10.000
with Encoder 110 116.312 3.156 12 10.000
with Encoder 120 126.312 3.156 13 10.000
--- - - -
--- - - -
.110 ± .005
M4 Thru
.750 ± .005
∅∅
∅ .312 Thru
∅∅
∅∅
∅ .500 C’bore x .160 Dp.
∅∅
“X” No. of holes
“A” Ref.
ACU-RITE
®
6