HEIDENHAIN ACU-RITE SENC 125 T User manual

SENC 125 T/E
REFERENCE MANUAL
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®
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Page
Introduction ............................................................................. 2
Mounting Preparation .............................................................. 3
Mounting Information .............................................................. 4
Encoder Dimensions - SENC 125 T (top mount) .................... 5
Encoder Dimensions - SENC 125 E (end mount) ................... 6
Encoder Center Support (for SENC 125 E only) ........................ 7
Mounting Requirements ......................................................... 8
Typical Mounting (s) ............................................................... 9
Page
Encoder Installation Procedure ............................................. 10
Checking the Installation ........................................................ 13
Electrical Shielding ............................................................... 14
Troubleshooting .................................................................... 15
Mechanical Specications .................................................... 16
Output Signals and Pin-Outs .............................................. 17
Electrical Specications ........................................................ 18
Warranty .............................................................................. 19
SENC 125 T/E Table of Contents
Brackets ...
• Installation brackets and kits are available.
• Your authorized distributor can assist you in selecting brackets
for your installation.
Leveling
Blocks
Reading head
mounting
brackets
6” Vertical side
bracket
4” Extension
bracket
8” Vertical side bracket
Available in right or left
(shown) hand
1
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2
Introduction / Supplied Items SENC 125 T/E
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: ____________________________________
The SENC 125 T and E Precision Glass Scale Linear Encoders
provides the accuracy and reliability of an ACU-RITE
®measuring
system.
Features include:
• Resolutions of 5µm.
• Accuracy Grade of ± 10µm/1000mm.
• Reference signals on 50mm intervals.
• Braided cables: 42”< encoders - 13 ft. length.
42”> encoders - 19 ft. length.
• Two scale case forms:
-SENC 125 T: Top mount scale; 2” - 120” measuring length
-SENC 125 E: End mount scale; 2” - 60” measuring length
• Mounting fasteners provided with scale.
• Mounting brackets available.
A • SENC 125 T or E linear encoder
B • Reference Manual
C • Encoder and Cable mounting hardware
Shipping carton contents
A
C
B
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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 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 instructed.
• Machine travel can not exceed the encoder measuring length.
• Either limit machine travel or use correct length scale.
• Never mount with lip seals upward or towards work area.
3
SENC 125 T/E Mounting Preparation
“L” = Measuring length
+ 1.75” nominal
over travel
2.0
[50.8]
2.4
[61]
2.4
[61]
2.0
[50.8]
“L” = Measuring length
+ 1.75” nominal
over travel
SENC 125 T
SENC 125 E
Cable direction
• Determine the cable exit direction before installing the encoder.
• To change the cable exit direction; remove the cover plate and
rotate the cable 180°.
T-10 Torx screw (2)
Plug
Cover plate
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Mounting Information SENC 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
® bracket kit instructions provide step by step
installation procedures.
• Tolerances of .010” TIR apply to all mounting dimensions.
• Top mounted form X= 2.37”.
• End mounted form X= 1.90”.
• Clearance requirements for alignment bracket removal.
• Alignment brackets must not be removed until instructed. • Use reading head leveling set screws.
• Reading head bracket required for a space >.18”.
Offset
mounting
Move bracket past
the cable strain relief
Alignment bracket removal clearance
1.0
[25mm]
1.38
[35mm]
Alignment
bracket
Alignment
bracket
(SENC 125 E end mounting scale case shown for reference) SENC 125 T SENC 125 E
.005 - .180”
Max. Gap
.005 - .180”
Max. Gap
Underside of end
caps to be ush
with the parting line
Axis parting
line
Axis parting
line
// .010 A
// .010 A
X
-A- = Axis travel
Tolerances ...
4
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SENC 125 T/E Encoder Dimensions
Measuring length + 5.75 [146]
1.72 [43.7]
Mounting holes
for 10-32 SHCS
SENC 125 T
(top mounted scale case)
.07 [1.7]
.95 [24.1]
.28 [7.1]
2.0
[50.8]
Ø For 8-32
(or M4) SHCS
mounting
screw
1.25 [32]
Min. bend rad.
2.37
[60.2]
.71
[18]
.57 [14.5]
1.12 [28.6]
.56 [14.2]
.12 [3]
.37 [9.4]
2.0 [50.8]
.31 [7.9]
15.75
[400] Typ.
2.25
[57.1]
15.75
[400] Typ.
5
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SENC 125 E
(end mounted scale case)
.07 [1.7]
Measuring length + 6.55 [166.4]
Measuring length + 5.44 [138.1]
.56
[14.2]
.94 [24]
.37 [9.4]
Mounting hole Ø .453 C’bore Ø .313 Thru
2.25
[57.1]
.56 [14.2]
Ø For 8-32
(or M4) SHCS
mounting
screw
1.25 [32]
Min. bend rad.
.59 [14.9]
1.90
[48.3]
Mounting hole
.95
[24.1]
.57 [14.5]
.71 [18]
.12
[3] .31 [7.9]
1.12
[28.6]
.70
[17.8]
2.65
[67.3]
Encoder Dimensions SENC 125 T/E
Center Support
.96
[24.4]
.75
[19.0]
6
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SENC 125 T/E Encoder Center Support
S ENC 125 E > 24” MUST USE CENTER SUPPORT(S) OR SPAR
Center Linear Encoder Distance
Support (s) Measuring Length Apart
Center Linear Encoder Distance
Support Measuring Length Apart
1 34 19.72
1 32 18.72
1 30 17.72
1 28 16.72
1 26 15.72
1 24 14.72
1 36 20.72 2 60 21.81
2 52 19.14
2 48 17.81
2 42 15.81
1 40 22.72
1 38 21.72
2 54 19.81
26.0”
[660 mm]
Max.
26.0”
[660 mm]
Max.
26.0”
[660 mm]
Max.
7
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Mounting options can be adapted to machine mounting surfaces
using spacers, standoffs, leveling set screws. A spar can be used
for the SENC 125 E encoder.
• Measuring length and mechanical conguration of your
machine determine your options.
• Fastener lengths described on this page are included with the
encoder or the backup spar.
• Mounting can be direct to the machine surface or with the aid of
leveling blocks or spacers. • For use with SENC 125 E scale case only (see page 7).
Mounting Requirements SENC 125 T/E
SENC 125 T
1/4-20 x 1/2” BHCS
& M6 Flat washer
Backup spar or center support mounting for SENC 125 E
encoders only
• Mounting can be direct to the machine surface or with the aid of
leveling blocks, spacers or back up spar.
M4 x 8mm SHSS
SENC 125 E
M5 Flat washer
10-32 x 1-1/4” SHCS
M3 x 8mm SHSS (3) 8-32 x 1” SHCS (2)
1/4-20 x 1/2” BHCS (2)
8-32 x 1” SHCS (2)
M3 x 8mm SHSS (3)
M6 Flat washer x .017” thk. (2)
Mounting hole cover (2)
Center Support
1/4-20 x 3/4” BHCS
1/4 Flat
washer
8
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