For more information, please visit the product page. rev. page 1 of 3 date 05/2009 DESCRIPTION: incremental encoder PART NUMBER: MEH20 ELECTRICAL SPECIFICATIONS output waveform output signals current consumption frequency response output phase difference Square Wave A, B, Z phase ≤50 mA 0~100 KHz A, B phase difference 90° ± 45° (T/4±T/8) Z phase T±T/2 (see output waveform) 5 V dc ±10% (line driver output only), 5 V ~ 12 V dc ±10%, 24 V dc ± 10% (open collector output only) 40, 50, 60, 100, 200, 250, 256, 300, 360, 400, 500, 512, 600, 800, 1000, 1024, 1200, 1800, 2000, 2048, 2500, 3600 2μ or less (outout cable 1m or less) supply voltage output resolution (ppr) waveform rise/fall time MECHANICAL SPECIFICATIONS max shaft load, radial: axial: starting torque max rotational speed shock resistance vibration proof weight cable 19.6N (2kgf) 14.7N (1.5kgf) (600-3600 ppr) 9.8N (1kgf) 4.9N (0.5kgf) (600-3600 ppr) 2 x 10-3 N·m (20 gf·cm) 6000 RPM 500 m/s2 (50G), 3 times each on XYZ 55 Hz, double amplitude 1.5mm, 2 hours each on XYZ 70g (with 1m cable) 4.2mm outside diameter, 5 core vinyl wire insulated shield cable (1m) ENVIRONMENTAL SPECIFICATIONS operating temp storage temp humidity -10° to +70° C -20° to +80° C RH 35%~90% non collecting ORDERING INSTRUCTIONS MEH20 - XXXXP-XX-XX 40 = 40 PPR 50 = 50 PPR 60 = 60 PPR 100 = 100 PPR 200 = 200 PPR 250 = 250 PPR 256 = 256 PPR 300 = 300 PPR 360 = 360 PPR Resolution (PPR): 400 = 400 PPR 500 = 500 PPR 512 = 512 PPR 600 = 600 PPR 800 = 800 PPR 1000 = 1000 PPR 1024 = 1024 PPR 1200 = 1200 PPR 1800 = 1800 PPR 2000 = 2000 PPR 2048 = 2048 PPR 2500 = 2500 PPR 3600 = 3600 PPR Output Circuit: "no entry" = Voltage output C = Open collector output E = Line driver output Input Voltage: Bore/Hub: 1 = 5V dc ± 10% "no entry" = Through/No Hub (line driver output only) F1 = Through/Hub/Set Screw 3 = 5 ~ 12V dc ± 10% 4 = 24V dc ± 10% (open collector output only) *F1 Bore/Hub is available only in resolutions below and not including 400PPR, see attached mechanical drawing 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 For more information, please visit the product page. rev. page 2 of 3 date 05/2009 DESCRIPTION: incremental encoder PART NUMBER: MEH20 CIRCUIT CONNECTIONS Vcc Red 2.2 kΩ A/B/Z White Green Yellow +5V Red Vcc Red A/B/Z White Green Yellow A/B/Z White Green Yellow 0V Black A/B/Z 20mA max 0V Open Collector Output (C) Line Drive Output (E) TTL Voltage Output 26C31 Black 0V White/Black Green/Black Yellow/Black 30mA max Black CABLE SHIELD CABLE SHIELD CABLE SHIELD OUTPUT WAVEFORM Clockwise rotation viewed from front Counter Clockwise rot ation viewed from front T T Phase A H L Phase A H L Phase B H L Phase B H L Phase Z H L Phase Z H L T ± T (90˚± 45˚) 8 8 T ± T (90˚± 45˚) 8 8 T±T/2 T±T/2 The position of Z phase against A, B phase is not specified F1 MECHANICAL DRAWING F1 Type 3-M3 10 Ø32 120 Ø6.7 Ø5 30 PCD24 0.5 5 22 5.5 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 PC FILE NAME: MEH20 0.8 0.030 COPYRIGHT 2007 BY CUI INC. 25.0 0.984 22.0 0.866 Cable Color Output Type 2.3 0.089 Output Cable L=1000 Red White Green Yellow Power A-Phase B-Phase Z-Phase 5.5 0.217 4.2 0.165 32.0 1.260 5.0 0.197 Black 0V - 30° - 10.0 0.394 - DESCRIPTION NEW DRAWING JMS DRAWN BY: MEH20 APPROVED BY: Incremental Encoder PART NO. TITLE: UNITS: 20050 SW 112th Ave. Tualatin, OR 97062 Phone: 503-612-2300 800-275-4899 Fax: 503-612-2383 Website: www.cui.com TOLERANCE: ±0.3mm UNLESS OTHERWISE SPECIFIED 3-M3 depth 5 equal arrangement PCD=24 6.7 0.264 REV. A A 1:1 SCALE: MM [INCHES] REV: RoHS DATE 7/27/2007 For more information, please visit the product page.