For more information, please visit the product page. rev. page 1 of 3 date 05/2009 DESCRIPTION: incremental encoder PART NUMBER: MEH20-2500PST ELECTRICAL SPECIFICATIONS output waveform output signals current consumption frequency response output phase difference supply voltage output resolution (ppr) Square wave A, B, Z phase ≤40 mA Line driver 0~50KHz, voltage - open collector 0~100KHz See output waveform 5 V dc ±10% (line driver output only), 5 ~ 12 V dc ±10% 5000, 10000, 20000, 40000 MECHANICAL SPECIFICATIONS max shaft load, radial: axial: starting torque max rotational speed shock resistance vibration proof weight cable 14.7N (1.5kgf) 4.9N (0.5kgf) 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 0° to +50° C -20° to +80° C RH 35%~90% non collecting ORDERING INSTRUCTIONS MEH20 - 2500PSTXX-XX Resolution (PPR): 2 = 2500 X 2 (5,000 PPR) 4 = 2500 X 4 (10,000 PPR) 8 = 2500 X 8 (20,000 PPR) 16 = 2500 X 16 (40,000 PPR) Output Circuit: "no entry" = TTL voltage output C = Open collector output E = Line driver output Input Voltage: 1 = 5 V dc ±10% (line driver output only) 3 = 5 ~ 12 V dc ±10% 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 For more information, please visit the product page. rev. DESCRIPTION: incremental encoder PART NUMBER: MEH20-2500PST CIRCUIT CONNECTIONS Voltage Output VCC (RED) 2.2kΩ A, B, Z (WHT, GRN, YEL) 20mA max 0V (BLK) CABLE SHIELD Open Collector Output (C) VCC (RED) A, B, Z (WHT, GRN, YEL) 30mA max 0V (BLK) CABLE SHIELD Line Driver Output (E) +5 V (RED) Main Circuit A, B, Z (WHT, GRN, YEL) A, B, Z (WHT/BLK, GRN/BLK, YEL/BLK) 26C31 0V (BLK) CABLE SHIELD OUTPUT WAVEFORM CW rotation (CW rotation as seen from fit surface) T t A phase B phase Z phase T±T/2 T = T ± 0.3T t = 1/4 T ± 0.3t 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page 2 of 3 date 05/2009 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.