ACU-RITE ENC 125 T/E User Manual
ENC 125 T/E
REFERENCE MANUAL
Acu-Rite Companies Inc.
ENC 125 T/E Table of Contents
Page
Introduction............................................................................ 2
Mounting Preparation ........................................................... 3
Mounting Information ........................................................... 4
Encoder Dimensions - ENC 125 T (top mount) ................... 5
Encoder Dimensions - ENC 125 E (end mount) .................. 6
Mounting Requirements........................................................ 7
Typical Mounting (s) .............................................................. 8
Encoder Installation Procedure ............................................ 9
Checking your Installation....................................................12
Electrical Shielding.............................................................. 13
Troubleshooting ................................................................... 14
Mechanical Specifications ................................................... 15
Output Signals and Pin-Outs.............................................. 16
Electrical Specifications ...................................................... 17
The Acu-Rite Companies Inc.Warranty ............................. 18
Brackets ...
Leveling
Blocks
Reading head
mounting
brackets
Available in right or
left (shown) hand
6” Vertical side
bracket
8” Vertical side
bracket
4” Extension
bracket
Page
• Installation brackets and kits are available.
• Your authorized distributor can assist you in selecting
brackets for your installation.
1 Acu-Rite Companies Inc.
Introduction / Supplied Items ENC 125 T/E
The ENC 125 T and E Precision Glass Scale Linear Encoders
provides the accuracy and reliability of an Acu-Rite
Companies Inc. measuring system.
Features include:
• Resolutions of 5µm and 10µm.
• Accuracy Grade of ± 10µm/1000mm.
• Reference signals on 100mm intervals.
• Braided cables: 42”
< encoders - 13 ft. length.
42”> encoders - 19 ft. length.
• Two scale case forms:
- ENC 125 T: Top mount scale; 2” - 120” measuring length
- ENC 125 E: End mount scale; 2” - 22” measuring length
• Mounting fasteners provided with scale.
• Mounting brackets available.
Shipping carton contents
A
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: ____________________________________
B
A • ENC 125 T or E linear encoder
B • Reference Manual
C • Encoder and Cable mounting hardware
Acu-Rite Companies Inc. 2
C
ENC 125 T/E Mounting Preparation
Please follow these preparation guide lines.
ENC 125 T
• Understand your mounting requirements.
• Mount with lip seals down and away from the work area.
• Brackets should be kept as short and rigid as possible.
• Surfaces must be in good condition, clean, and free of dirt.
Remove paint from machined surfaces used for mounting.
• Alignment brackets must not be removed until
2.0
[50.8]
ENC 125 E
“L” = Measuring length
+ 1.75” nominal
over travel
2.0
[50.8]
instructed.
• Never mount with lip seals upward or towards work area.
2.4
[61]
“L” = Measuring length
+ 1.75” nominal
over travel
2.4
[61]
• Machine travel can not exceed the encoder measuring length.
• Either limit machine travel or use correct length scale.
Cable direction
Plug
Cover plate
Cable grommet
T-10 Torx screw (2)
• 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 Companies Inc.
Mounting Information ENC 125 T/E
Use this information to plan your Linear Encoder
installation.
• Mount the linear encoders close to machine guide ways to
ensure system accuracy.
• If space between the reading head and the mounting
surface exceeds .18”, use a mounting bracket or spacer to
reduce space.
• Acu-Rite Companies Inc. bracket kit instructions provide
step by step installation procedures.
Alignment bracket removal clearance
(ENC 125 E end mounting scale case shown for reference)
Alignment
bracket
1.0
[25mm]
1.38
[35mm]
Alignment
bracket
Move bracket past
the cable strain relief
• Clearance requirements for alignment bracket removal.
• Alignment brackets must not be removed until
instructed.
Tolerances ...
.010
//
X
-A- = Axis travel
.010
//
• Tolerances of .010” TIR apply to all mounting dimensions.
• Top mounted form X= 2.37”.
• End mounted form X= 1.90”.
Offset
mounting
Axis parting
line
.005 - .180”
Max. Gap
ENC 125 T
Axis parting
Underside of end
caps to be flush
with the parting
line
line
ENC 125 E
.005 - .180”
Max. Gap
• Use reading head leveling set screws.
• Reading head bracket required for a space >.18”.
A
A
Acu-Rite Companies Inc. 4
ENC 125 T/E Encoder Dimensions
ENC 125 T
(top mounted scale case)
2.0
[50.8]
1.72 [43.7]
(or M4) SHCS
.37 [9.4]
1.125 [28.6]
Ø For 8-32
mounting
screw
Measuring length + 5.75
[146]
15.75
[400] Typ.
1.25 [32]
Min. bend rad.
2.25
[57.1]
.56 [14.2]
15.75
[400] Typ.
Mounting holes
for 10-32 SHCS
.12 [3]
2.0 [50.8]
.28 [7.1]
.95 [24.1]
2.37
[60.2]
.71
[18]
.31 [7.9]
.57 [14.5]
.070 [1.7]
5 Acu-Rite Companies Inc.
Encoder Dimensions ENC 125 T/E
ENC 125 E
(end mounted scale case)
.56
[14.2]
.94 [24]
.37 [9.4]
Ø For 8-32
(or M4) SHCS
mounting
screw
1.125
[28.6]
Measuring length + 6.55 [166.4]
Measuring length + 5.437 [138.1]
Mounting hole
Ø .500 C’bore Ø .313 Thru
1.25 [32]
Min. bend rad.
.56 [14.2]
2.250
[57.1]
.12
[3]
.56 [14.2]
.95
[24.1]
1.90
[48.3]
.71 [18]
.31 [7.9]
.57 [14.5]
.070 [1.7]
Acu-Rite Companies Inc. 6
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