ACU-RITE ENC 250SS User Manual
ENC 250™ SINGLE SECTION
REFERENCE MANUAL
Acu-Rite Companies Inc.
ENC 250™ SINGLE SECTION
Table of Contents
Page
Introduction..............................................................................2
Mounting Preparation .............................................................3
Mounting Information ............................................................. 4
Encoder Dimensions ................................................................5
Mounting Requirements..........................................................6
Installation Procedure .............................................................7
Tape Tensioning.....................................................................10
Electrical Shielding................................................................12
Troubleshooting .....................................................................13
Mechanical Specifications ..................................................... 14
Output Signals and Pin-Outs................................................15
Electrical Specifications ........................................................16
The ACU-RITE Warranty ....................................................17
Tool Requirements .................................................................18
Brackets ...
Off set side
mount bracket
Reading head
mounting plate
Universal side mounting bracket
(Available in different lengths)
Combination
reading head bracket
w/extension
• Installation brackets are available.
• Your authorized distributor can assist you in selecting
brackets for your installation.
1
Acu-Rite Companies Inc.
Page
Introduction / Supplied Items
ENC 250™ SINGLE SECTION
The ENC 250 linear encoder provides the accuracy and
reliability of an Acu-Rite Companies Inc. measuring system
with digital output. Features and options include:
• Resolution of [.0002in.] 5µm
• Accuracy grade of +/-15µm/M
• [2 ft.] .61m armor cable and extension cables up to a maximum of
[75 ft.] 22.86m for a VRO; [35 ft.] 10.67m for a DRO
• Mounting hardware
• Brackets and accessories
Contact your Authorized Distributor for a complete list of
other products and accessories.
Contents ...
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: _______________ __________________
Tape tension value: ___________________________________
Date of purchase: ____________________________________
Distributor: ____________________________________
Address: ____________________________________
Telephone: ____________________________________
A
C
A • ENC 250 Linear Encoder
B • Encoder mounting hardware
C • Reference Manual
Acu-Rite Companies Inc.
B
2
ENC 250™ SINGLE SECTION
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 only be removed as
•
instructed.
Coolant spray ...
• Encoder lip seals to face away from coolant spray.
Measuring length ...
[1.0”]
25mm
“L”
“L” = Measuring length + [2.0”] 50.8mm nominal over travel
Travel is limited by stops at each end of scale
[2.8”]
71.1mm
• Machine travel can not exceed the encoder measuring length.
• Either limit machine travel or obtain correct length scale.
Changing cable exit direction ...
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 Companies Inc.
Mounting Information
ENC 250™ SINGLE SECTION
Use this information to plan your Linear Encoder
installation.
• Mount the linear encoders close to machine guide ways to
ensure system accuracy.
• Space between reading head casting and mounting bracket
or surface must not exceed [.188”] 4.7mm.
Alignment bracket removal clearance
Alignment bracket
[1.0]
25mm
[1.0]
25mm
(2)
End of scale clearance requirements
[1.0] 25mm
[5.0]
127mm
[5.0]
127mm
• [1.0] 25mm of clearance is required above the scale case
top surface for access to the expansion cover fasteners.
• A minimum clearance of [5.0] 127mm is required at each
end of the scale case.
Horizontal
mounting
Vertical
mounting
• Allow clearance for alignment bracket removal.
Alignment brackets must not be removed until
•
instructed.
Acu-Rite Companies Inc.
• Mount encoder in a horizontal or vertical position as shown.
• Do not mount flat or inverted.
4
ENC 250™ SINGLE SECTION
Encoder Dimensions
[.83]
21.0
[.37]
9.4
5
Acu-Rite Companies Inc.
[3.2]
81.3
Loading...