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Acu-Rite 516353-21 - page 1
REFERENCE MANUAL SENC 50 Acu-Rite Companies Inc. ...
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Page Introduction / Supplied items ............................................... 2 Key Points / Tolerances ......................................................... 3 Linear Encoder Dimensions .................................................. 4 Spar Dimensions .................................................................... 5 Mounting Requir ...
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Acu-Rite 516353-21 - page 4
The SENC 50 Precision Glass Scale Linear Encoder provides the accuracy and reliability of an Acu-Rite Companies Inc. measuring system in a very small cross-section with digital output (analog output available). Features and options include: • Resolutions of 0.5, 1.0 or 5µm. • Accuracy grades of ± 3 or ± 5 µm / 1000mm. • Position Trac or 5 ...
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Acu-Rite 516353-21 - page 5
Use this information to plan your Linear Encoder installation. • Understand your mounting requirements. • Follow kit instructions when using an Acu-Rite Companies Inc. bracket kit. • Mount encoders close to ways to insure system accuracy. • Mount with lip seals down and away from the work area. • Brackets should be short and rigid. • Su ...
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Acu-Rite 516353-21 - page 6
Acu-Rite Companies Inc. 4 Linear Encoder Dimensions SENC 50 Measuring length + 4.65 [118] Measuring length + 4.09 [103.9] .280 [7.11] Typ. End cap Scale assembly Scale case Mounting hole .335 [8.51] .140 [3.55] .463 [11.76] .175 [4.57] Typ. 1.85 [47.00] 2.775 [70.50] Reading head assembly for M4 Hex nut Strain relief and cable 2.0 [50] Approx. min ...
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Acu-Rite 516353-21 - page 7
680803-13 13 17.650 3.825 3 5.000 680803-16 16 20.650 2.825 4 5.000 680803-18 18 22.650 1.325 3 10.000 680803-15 15 19.650 2.325 4 5.000 680803-14 14 18.650 1.825 4 5.000 SENC 50 Sp ar Dimensions 5 Acu-Rite Companies Inc. Backup spar Linear Encoder L A X No. B Part Number Measuring Length Places 680803-01 1 5.650 .825 2 4.000 680803-09 9 13.650 1.8 ...
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Acu-Rite 516353-21 - page 8
Mounting Requirement s SENC 50 Mounting options can be adapted to machine mounting surfaces using spacers, standoffs, and leveling screws. • Measuring length and mechanical configuration of your equipment determines your options. • Length related mounting options shown. • When a backup spar is used, mount the backup spar following the same pr ...
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Acu-Rite 516353-21 - page 9
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 for reference. • Flush or offset mounting surfaces using a spar. • Reading head mounting bracket required (bottom mounting bracket exa ...
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Acu-Rite 516353-21 - page 10
Encoder Installation Procedure SENC 50 These steps apply to all mounting conditions. Although this may not pictorially represent your application, your installation procedure should follow these steps. • Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. B B B B B racket Kit ins ...
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Acu-Rite 516353-21 - page 11
• Slide shipping brackets from reading head and twist to remove from the scale case. • Save the shipping brackets with the Reference Manual. • Drill / tap the first end mounting hole / Attach the scale case. • Align to within .005” TIR. and drill / tap second end hole. • Attach scale case & align to within .005” TIR. of the axis t ...
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Acu-Rite 516353-21 - page 12
• Check function of the linear encoder. These steps will confirm proper operation of your installation. Counting tests check channel A and B output function and Reference Mark tests check Reference Mark operation. • Configure the readout for proper counting resolution. • Move axis and compare the display to the movement. • Repeat test for m ...
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Acu-Rite 516353-21 - page 13
11 Acu-Rite Companies Inc. SENC 50 Electrical Shielding Connect a ground wire from the terminal on the back of the readout to the machine or earth ground. Attach a ground wire from the machine to a solid earth ground. With the encoder attached to the machine and the cable connected to the readout, check shielding by measuring resistance between con ...
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Acu-Rite 516353-21 - page 14
Acu-Rite Companies Inc. 12 T rouble Shooting SENC 50 If you experience difficulties with your installation, there are methods to analyze the difficulty. Operating difficulties can be caused by either the linear encoders or the readout. Checking the readout Checking the readout Checking the readout Checking the readout Checking the readout Follow th ...
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Acu-Rite 516353-21 - page 15
13 Acu-Rite Companies Inc. SENC 50 Mechanical Specifications Mechanical Specifications Digital Analog Resolution 0.5µm 1µm 5µm Grating pitch 20µm Scale medium Light transmission reflective off of chrome coated glass Accuracy (@ 20° C) / 1000mm ± 3µm, ± 5µm Max. slew speed (M/s) 1 Connecting cable Length = 5, 13, and 19 ft. Length = 5, 13, ...
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Acu-Rite 516353-21 - page 16
Digital Differential Digital Differential Digital Differential Digital Differential Digital Differential Analog Differential Analog Differential Analog Differential Analog Differential Analog Differential Pin 1 Pin 1 Pin 1 Pin 1 Pin 1 Pin 2 Pin 2 Pin 2 Pin 2 Pin 2 Pin 3 Pin 3 Pin 3 Pin 3 Pin 3 Pin 4 Pin 4 Pin 4 Pin 4 Pin 4 Pin 5 Pin 5 Pin 5 Pin 5 P ...
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Acu-Rite 516353-21 - page 17
15 Acu-Rite Companies Inc. SENC 50 Electrical Specifications Parameter Analog Output Signals Incremental signals Signal levels Reference Mark signals Signal level Power Supply Square-wave voltage signals. Channels A and B, in 90° quadrature relationship TTL-level Similar phasing, but differential sinusoidal current or 1 volt peak to peak output 7- ...
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Acu-Rite 516353-21 - page 18
Acu-Rite Companies Inc. 16 Acu-Rite Companies Inc. W arranty SENC 50 ACU-RITE Companies, Inc. is proud to offer the 3-Year Hassle-Free Warranty for all readout systems, and precision glass scales. This warranty will cover all of the ACU-RITE repair and replacement costs for any readout or precision glass scale returned during the three (3) year war ...
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Acu-Rite 516353-21 - page 20
Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. Acu-Rite Companies Inc. IS AN IS AN IS AN IS AN IS AN ISO 9001 ISO 9001 ISO 9001 ISO 9001 ISO 9001 CERTIFIED CERTIFIED CERTIFIED CERTIFIED CERTIFIED MANUF MANUF MANUF MANUF MANUF ACTURER ACTURER ACTURER ACTURER ACTURER 516353-21 V e01 8/2009 One Precisio ...
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