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ACU-RITE ENC 150 User manual

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ENC 150
ACU-RITE ®
REFERENCE MANUAL
Page
Introduction .............................................................................. 2
Mounting Preparation............................................................... 3
Mounting Information ............................................................... 4
Encoder Dimensions ................................................................ 5
Backup Spar Dimensions ........................................................ 6
Mounting Requirements ........................................................... 7
Typical Mountings .................................................................... 8
Installation Procedure .............................................................. 9
Page
Checking the Installation.......................................................... 11
Troubleshooting ..................................................................... 12
Mechanical Specifications ..................................................... 13
Output Signals and Pin-Outs ................................................. 14
Electrical Specifications ......................................................... 15
The ACU-RITE warranty and
30-Day Red Carpet warranty service ..................................... 16
 Installation brackets and tools are available.
 Your Authorized ACU-RITE Distributor can assist you in selecting
brackets and tools for your installation.
1ACU-RITE ®
Motor mount
Reading Head
bracket
Horizontal mt.
bracket
Extension
bracket
Side mount
bracket
Rear mount
bracket
ENC150 Table of Contents
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:
 Digital resolutions of 1, 2, 5, or 10 µm.
 Accuracy grades of ±3, and ± 5 µm / 1000mm.
 Home reference signal (Ref. Mark) coded or 200mm interval.
 Vinyl or Armor cables of 5, 10, and 15 ft. length.
 Mounting fasteners, center supports, and backup spars.
 Installation brackets and accessories.
Contact your Authorized ACU-RITE Distributor for assistance with
selection of product options and accessories.
A) ENC 150 Linear Encoder
B) Backup Spar
C) Linear Encoder Reference Manual
D) Cable Mounting Hardware
E) Linear Encoder Mounting Hardware
F) Backup Spar Mounting Hardware
ACU-RITE ® 2
Introduction ENC 150
C
A
Shipping carton
contents
D
E
ENC 150
2 thru 60
B
C
A
E
D
F
Shipping carton
contents
ENC 150
65 and over
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: _______________
Please follow these preparation guide lines.
 Understand your mounting requirements.
 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 alignment brackets until instructed.
 Limit equipment travel to encoder measuring length or less.
 Determine cable exit before installing
 To change cable exit direction; remove base and rotate 180°.
 Never mount with lip seals upward or towards work area.
3ACU-RITE ®
ENC150 Mounting Preparation
L = Measuring length
+ 1.75 nominal
over travel
L
1.150
1.150
Cable direction
Rotate reading head
base 180°
Use this information to plan your Linear Encoder installation.
 Mount the linear encoders close to machine guide ways to ensure
system accuracy.
 Follow kit instructions when using an ACU-RITE bracket kit.
 Mounting surfaces offset greater than .18 between the reading
head and mounting surface require a spacer or bracket.
 One side of the linear encoder addresses flush mounting surfaces,
and the opposite side addresses offset mounting surfaces.
 Tolerances of .005 TIR apply to all mounting dimensions.
 Center support mounting surface required for 24 through 60
linear encoder measuring lengths.
 Allow clearance for alignment bracket removal.
 Do not remove alignment brackets until instructed.
 Use reading head leveling set screws when surfaces are not flush.
 Offset mounting surfaces require a spacer or reading head bracket
if gap is over .188.
ACU-RITE ® 4
Mounting Information ENC150
Scale case
Flush
mounting
Offset
mounting
Backup spar mounting
and reading head bracket
-A- = Machine Travel
Reading head
B
Equal Equal
1.826 ±.010 [46.5]
// .005 A
// .005 A
// .005 B
// .005 A
// .005 A
0.0 ± .010
Move bracket past
the cable strain relief
Alignment bracket removal clearance
1.0
[25]
1.38
[35]
Alignment
bracket
Alignment
bracket
5ACU-RITE ®
ENC150 Encoder M
Measuring length + 6.375 [161.9]
Measuring length + 5.437 [138.1]
.469
[11.9]
.944
[24.0]
.320
[8.1]
Æ .500 CBore
Æ .313 Thru
Reading Head
assembly 2.250
[57.1]
1.125
[28.6]
.56
[14.4]
.100
[2.5]
Æ For 8-32
(or M4) SHCS
mounting
screw
.32
[8.4]
Armor
.20
[5.2]
Vinyl
1.25 [32]
Min. bend rad.
Max. nominal linear encoder over travel 1.825
Published over travel 1.75
.810
[20.6]
.285
[7.2]
1.826
[46.4]
1.12
[28.5]
End Cap
Mounting hole
Scale case .562
[14.3]
.570
[14.5]
.810
[20.5] 1.060
[27.0]
2.148
Ref.
[54.6]
.250
[3.4] .660
[16.8]
1.440
[36.6]
.750
[19.0]
.121
[3.11]
With Backup
Spar
ACU-RITE ® 6
Backup Spar Dimensions ENC 150
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     
     
     
     
     
 6SHFLDO    
     
     
     
     
     
     
     
     
     
 ³(´    
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 ³(´    
     
     
     
     
     
     
     
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    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
:LWK(QFRGHU
    
A ± .015
A ± .005
L ± .015
5.000 typ. ± .015
Non
Accumulative
B typ. ± .015
Non Accumulative
A Ref.
.750 ± .005
.110 ± .005
M4 Thru
Æ.312 Thru
Æ.500 CBore x .160 Dp.
X No. of holes
E
Mounting options can be adapted to machine mounting surfaces
using spacers, standoffs, or leveling set screws.
 Measuring length and mechanical configuration of your equipment
determine your options.
 Backup spar mounting is an option but not required for lengths
up to 60.
 Backup spar uses the same mounting procedure as is used with
mounting the scale case. Follow these steps for alignment and
hole location.
 Less than 24 : Use end mounting holes.  Over 60 :A backup spar is required.
7ACU-RITE ®
ENC150 Mounting Requirements
1/4-20 x 1 BHCS
& scale washer
End hole mounting
1/4-20 x 1/2 BHCS
and spar washer
Backup spar
mounting
 24 to 60 : Use end mounting holes with center supports.
.75 [19]
1/4-20 x 1 BHCS
Typical
8-32 x 1
SHCS Linear
Encoder
washer
Center
support
End hole mounting
with center support
M4 x 8mm
SHSS
A variety of mounting conditions can be accommodated.
 Mechanical configuration of the equipment determines brackets
and adapters required to install the linear encoder.
 Three typical conditions are shown; flush, offset, and backup spar
mounting.
 Mounting surfaces offset.
 Installation without backup spar.
 Use leveling set screws to eliminate spacers and shims.
 Mounting surfaces flush within .005.
 Reading head leveling set screws typically not required.
 Flush or offset mounting surfaces with a backup spar.
 Reading head bracket to reduce head mounting surface gap.
 Use reading head leveling set screws.
ACU-RITE ® 8
Typical Mountings ENC 150
1/4-20 x 1/2 BHCS
and spar washer
8-32 x 5/8 SHCS
(trim to fit)
1/4-20 x 1/2 BHCS
Backup spar mounting
on offset surface
A space over .188, requires the use of a spacer or reading
head bracket (shown) and leveling set screws.
1/4-20 x 1 BHCS
with encoder washer
8-32 x 1 SHCS
Offset mounting surface
Space of .188 or less use reading
head leveling set screws.
1/4-20 x 1 BHCS
and encoder washer
8-32 x 3/4 SHCS
Flush mounting surface
.005
0.0 ± .005