Page 3 - Table of Contents; • Installation brackets and kits are available.
Page Introduction / Supplied items ............................................... 2 Key Points / Tolerances ......................................................... 3 Linear Encoder Dimensions .................................................. 4 Spar Dimensions .......................................
Page 4 - Introduction / Supplied Items; Shipping carton
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 ...
Page 5 - Key Points / Tolerances
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. • Bra...
Page 6 - Linear Encoder Dimensions
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...
Page 7 - Spar Dimensions; Backup spar mounting optional for all lengths
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 Spar Dimensions 5 Acu-Rite Companies Inc. Backup spar Linear Encoder L A X No. B Part Number Measuring Length Places 6808...
Page 8 - Mounting Requirements; End mounting holes
Mounting Requirements 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, ...
Page 9 - Typical mounting; Spar mounting
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 brac...
Page 10 - Encoder Installation Procedure; CL
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. ...
Page 11 - Installation Procedure
• 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 & alig...
Page 12 - Checking the Installation
• 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 di...
Page 13 - Electrical Shielding
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, c...
Page 14 - Trouble Shooting
Acu-Rite Companies Inc. 12 Trouble 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.C h e c k i n g t h e r e a d o u t C h e c k i n g t h e r e a d ...
Page 15 - Mechanical Specifications; Resolution; Connecting cable
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 Le...
Page 16 - Output Signals and Pin-Outs
Digital Differential Digital Differential Digital Differential Digital Differential Digital Differential A n a l o g D i f f e r e n t i a l A n a l o g D i f f e r e n t i a l A n a l o g D i f f e r e n t i a l A n a l o g D i f f e r e n t i a l A n a l o g D i f f e r e n t i a l Pin 1 Pin 1 Pin...
Page 17 - Electrical Specifications; Parameter
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 si...
Page 18 - liable under any circumstances for consequential damages.
Acu-Rite Companies Inc. 16 Acu-Rite Companies Inc. Warranty 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 g...
Page 20 - One Precision Way • Jamestown, NY 14701
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 MANUFACTURER ACTURER ACTURER AC...
