SENC 150 REFERENCE MANUAL

Transcription

1 SENC 50 REFERENCE MANUAL

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3 SENC 50 Table of Contents / Warnings Page Introduction / Supplied items Preparing the mounting / Mounting information Encoder dimensions Backup spar dimensions Mounting the encoder without backup spar Mounting the encoder via end holes Mounting the encoder via center support Mounting the encoder with backup spar Mounting the reading head Checking the mounting Specifications Pin-outs... 8 Output signals

4 SENC 50 SENC 50 REFERENCE MANUAL REFERENCE MANUAL Introduction / Supplied items SENC 50 The SENC 50 precision glass scale linear encoder provides the accuracy and reliability of an ACU-RITE measuring system with digital output. Features and options include: Resolutions of 0.5,, or 5 µm. Accuracy grades of ± 3, and ± 5 µm/000 mm. Vinyl or armor cables of 5, 3, and 9 ft. length. Distance-coded reference marks. Contents ML 550 mm (60 ) A C E D G Note: Mounting and commissioning is to be conducted by a qualified specialist under compliance with local safety regulations. Do not engage or disengage any connections while under power. The system must be disconnected from power. Contents key Contents ML 675 mm ( 65 ) A SENC 50 linear encoder B Backup spar C Reference manual D Cable mounting hardware E Linear encoder mounting hardware F Backup spar mounting hardware G Quality test certificate A B C E D F G 4

5 SENC 50 2 Preparing the mounting Mounting surface clean and free of paint. * 28.8 mm *.34 *** 36.6 mm ***.44 **9 mm **0.748 * Linear encoder ** Linear encoder with center support *** Linear encoder with backup spar *LL [mm] x *LL [ ] ***L [ ] ±0.35 ***L [ ] ± mm **9.05 mm ** mm F = Machine guideway L = Length of backup spar (page 0) Protect sealing lips from splash water. LL [mm] LL [ ] LL [mm] LL [ ] LL [ ] LL [ ] If there is a risk of severe contamination, attach a protective cover. 5

6 2 Preparing the mounting / Mounting information SENC 50 Traverse path.75 mm (LL x )/2 mm (LL )/2 ML/2 mm (LL + OT)/2 Scale case C L Center marks Alignment brackets (2x) Cable assembly ML = Measuring length OT = Overtravel.75 ML mm LL + OT Reading head assembly Align the center marks on the reading head and scale assembly by sliding the reading head and brackets along the scale. Center mounting axis C L Mark center of travel F = Machine guideway Move the axis to its center of travel. Mark the axis for quick return to center. Determine encoder cable exit direction (page 7) and adjust. Locate the scale case so underside of end caps are flush with the axis parting line. Mark one end mounting hole location. Alignment brackets must not be removed until instructed. 6

7 SENC 50 2 Mounting information Mounting possibilities Determining cable direction Flush mounting Offset mounting Backup spar mounting Determine cabel exit direction before mounting the encoder. To change the cable exit direction, remove the cover plate and rotate it by 80. K - cable exit right side Do not pull out the PCB! Space of 4.5 mm ( 0.8 ) use reading head leveling screws! T-0 torx screw Use reading head leveling set screws when surfaces are not flush. Detailed information about mounting possibilities on page (Mounting the encoder without backup spar) and on page 4 (Mounting the encoder with backup spar). K2 - cable exit left side Do not clamp the wires! T-0 torx screw max. 70 Ncm! 7

8 3 Encoder dimensions SENC 50 8

9 SENC 50 3 Encoder dimensions ML = Measuring length [mm] LL = Measuring length [inch] OT = Overtravel.75 S = Beginning of measuring length K = required mating dimensions H = for ML 625 mm to 550 mm use mid-point fastening for ML 24 to 60 use mid-point fastening = Direction of scanning head motion for output signals in accordance with interface description F = Machine guideway 9

10 4 Backup spar dimensions SENC 50 Encoder Encoder L L L L L2 L2 No. ML (mm) LL (inch) (mm) (inch) (mm) (inch) (mm) (inch) holes B Encoder Encoder L L L L L2 L2 No. ML (mm) LL (inch) (mm) (inch) (mm) (inch) (mm) (inch) holes B , H2 for ML 675 mm (65 ) backup spar included in items supplied for ML 675 mm (65 ) backup spar optional B = Number of holes 0

11 SENC 50 5 Mounting the encoder without backup spar A variety of mounting conditions can be accomodated. The machine configuration determines the brackets required to mount the linear encoder. Two typical mounting conditions are shown: flush and offset. All fasteners shown on this page are supplied with the encoder hardware. Offset surfaces 2 2 Flush surfaces Space of 4.5 mm ( 0.8 ) use reading head leveling screws! M6 x 25 mm BHCS (/4-20 x BHCS) M6 flat washer M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) M4 hex nut Mounting surfaces are flush within 0.25 mm (0.00 ). The reading head leveling screws are not required. Mounting surfaces are offset. Mounting without backup spar. Use leveling screws in place of spacers or shims.

12 5. Mounting the encoder via end holes SENC 50 Bore hole pattern Mounting LL < 625 mm (24 ): Use end mounting holes. ML/2 ML P P2 0 P = Gauging point M6 x 25 mm (/4-20 x BHCS) M6 flat washer 2 2 M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) 2

13 SENC Mounting the encoder via center support Bore hole pattern Mounting 625 mm (24 ) LL 550 mm (60 ): Use end mounting holes with center support. ML/2 ML P P2 P P = Gauging point 2 3 M6 x 25 mm (/4-20 x BHCS) M6 flat washer M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) M6 x 20 mm (/4-20 x 3/4 BHCS) M6 flat washer 3

14 6 Mounting the encoder with backup spar SENC 50 Mounting possibility Mounting P 3 3 P2 P3 3 6 Space of 4.5 mm ( 0.8 ) use reading head leveling screws! Flush or offset mounting with a backup spar. Bracket used to reduce head to mounting surface gap. Bore hole pattern LL > 550 mm (60 ): A backup spar is required. 2 M6 x 25 mm (/4-20 x BHCS) M6 flat washer 2 M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) 3 M4 x 8 mm SHSS P = Gauging point 4

15 SENC 50 7 Mounting the reading head Leveling screws Mounting the reading head with hex nut M4 hex nut Adjust the leveling set screws as follows: Insert, but do not tighten 8-32 (M4) reading head screws as shown on the right side. Place a mm mm ( ) shim between the leveling set screws and mounting surface. Adjust each set screw until a slight drag is felt on the shim. Remove the shim before tighten the reading head screws. Mounting the reading head M3 x 2 mm SHSS Do not tighten prior to adjusting leveling set screws. Evenly tighten the 8-32 (M4) reading head mounting screws. Removing the alignment brackets M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) M4 x 25 mm SHCS low head (8-32 x 5/8 SHCS low head) (8-32 x 3/4 SHCS low head) Slide brackets away from reading head and cable. Slide the brackets away from the reading head. Remove the alignment brackets and save for future use. 5

16 8 Checking the mounting SENC 50 Connecting the encoder Route the cables with slack loops to allow for axis motion. Secure excess cable by fastening with clips or ties. Attach the linear encoder connectors to the readout. Checking the 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 connector housing and scale unit. Desired value: Ω max. 6

17 SENC 50 9 Specifications Mechanical specifications Digital Resolution 0.5 µm µm 5 µm Grating pitch 20 µm Scale medium Accuracy (@ 20 C) / 000 mm ± 3µm, ± 5µm Max. traversing speed 60 m/min Force required to move reading head <3.4 N Operating environment Temperature Relative humidity Storage environment Temperature Humidity Weight w/armor Light transmission reflective off of nickel coated glass 0 to 50 C 25 % to 95 % (non-condensing) Connecting cable armored or vinyl Max. cable length 9 m Measuring lengths 50 mm 3075 mm ( 20 ) -20 to 70 C 20 % to 95 % (non-condensing) Scale case: 80 g g/mm ML Reading head: 60 g Backup spar: g/mm L Cable: vinyl: 50 g/m armored: 40 g/m Connector: 55 g Length = 4 m resp. 6 m from ML 250 mm; connector: DE-9P Reference pulse interval distance coded 50 mm Voltage supply DC 5. V ±0. V / <220 ma DC 5. V ±0. V /< 80 ma Protection EN IP 53 when mounted as per instructions 7

18 0 Pin-outs Output signals Digital Differential Pin Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 n/c green yellow blue red white brown pink gray n/c channel A+ 5 channel A- channel B+ channel B- ground Vcc, +5. ±0. VDC channel R+ SENC 50 channel R- 6 9 Outout signals Parameter Output signals Incremental signals Signal levels Reference mark signal Signal level I OH =(High level output current) = 20 ma V OH =(High level output voltage) >2.5 Vdc I OL =(Low level output current) = -20 ma V OL =(Low level output voltage) < 0.6 Vdc Digital Channel A+ Channel A- Channel B+ Channel B- Square-wave voltage signals. Channels A and B, in 90 quadrature relationship TTL-level Square-wave pulse TTL-level Channel R+ 0 Channel R- 0 count (phased) 8

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20 ID: D A-0 05/207