Rotary encoder RE20F

COPAL ELECTRONICSOPTICAL ENCODERSRE20FFEATURES● Compact, dia.: 20 mm● Low torque, low inertia● RoHS compliantRoHS compliantPART NUMBER DESIGNATIONRE20F - 100 - 100Series nameResolution (P/R)100, 300Output phase1“A” only2“A” & “B” (100 P/R only)LIST OF PART NUMBERSResolution Item Output phases Part number100 (P/R)300 (P/R)100 (P/R)“A” only“A” & “B”RE20F-100-100RE20F-300-100RE20F-100-200 Verify the above part numbers when placing orders.STANDARD SPECIFICATIONS● Electrical characteristics● Mechanical characteristicsItemOutput phases“A” only“A” & “B”Starting torque0.05 mN·m {0.5 gf·cm} maximumPhoto-sensor maximum current45 mA maximum (at 25 °C)Inertia0.2 g·cm 2 maximumOutput wave formOutput phasesAQuasi-sinusoidalA, BShaft loading(When mounting)RadialAxial1.96 N {200 gf} maximum4.9 N {500 gf} maximumResolution100, 300 100Net weightApprox. 15 gPhase difference of outputs A & BMaximum frequency responseOutput signalOutput signal amplitude variation Light source——— 90° ± 45°——— 12 kHz150 mVp-p minimum 1 Vp-p minimum40 % maximumLED●Environmental characteristicsOperating temp. range0 ~ 50 °CStorage temp. range− 20 ~ 80 °CProtection gradeIP − 40Measured at CP1 in the fig.A of ‘MEASUREMENT CIRCUIT’ on the following page.One phase only : Measured at CP2 in the fig.A of ‘MEASUREMENT CIRCUIT’ on the following page. Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.

φ0COPAL ELECTRONICSRE20FOPTICAL ENCODERSRELIABILITY TESTThe output wave form and starting torque shall satisfy the STANDARD SPECIFICATIONS after the following tests.Test itemTest conditionsVibrationShockPower OFFPower OFFAmplitude : 1.52 mm or 98.1 m/s 2 (10 G) whichever is smaller.10 ~ 500 Hz excursion 5 min/cycle, 1 hour each for X, Y, Z, directions.1 time each in 6 directions (X, Y, Z) at 490 m/s 2 (50 G), 11 ms.High temperatureexposureLow temperatureexposurePower OFFPower ONPower OFFPower ON80 °C 96 h50 °C 96 h− 20 °C 96 h0 °C 96 h(To be measured after leaving samples for 1 h at normal temperature andhumidity after the test.)HumidityThermal shockPower OFFPower OFF(To be measured after wiping out moisture and leaving samples for 1 h at normal temperature and humidity after the test.)To be done 10 cycles with the following condition(To be measured after leaving samples for 1 h at normal temperature and humidity after the test.)°C − °C OUTLINE DIMENSIONS● RE20FUnless otherwise specified, tolerance: ± 0.4 (Unit: mm)AWG262– M 2 D = 3.5 min.Epoxy80 min.20φ – 0.01216±0.18.5±0.5 13.4 3 max.OUTPUTCWTCCWOutput “A”1/2TOutput “B”1/2T1/4T±1/8T Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.

COPAL ELECTRONICSRE20FOPTICAL ENCODERSEXTERNAL SCHEMATICS● (2 phase) 100 P/R(Green)(Red)82 Ω1.8 kΩ+5 VA (White)2 kΩ2 kΩ Comp.Output “A”B (Brown)560 ΩROutput “B”Circuit identical to output “A”(Black)0 VINTERNAL CIRCUIT● (1 phase) 100 • 300 P/RLED anode (Elect.wire: Green)Phot-tr. collector (Elect.wire: Red)● (2 phases) 100 P/RLED anode (Elect.wire: Green)Phot-tr. collector (Elect.wire: Red)Phot-tr. emitter (Elect.wire: White)Phot-tr. emitter (Elect.wire: White)Phot-tr. emitter (Elect.wire: Brown)LED cathode (Elect.wire: Black)LED cathode (Elect.wire: Black)MEASUREMENT CIRCUIT● (1 phase) 100 • 300 P/R● (2 phases) 100 P/R+5 VFig. A220 kΩ(Green)(Red)82 Ω+5 V120 Ω3 kΩ0.003FCP2Amp.4.7 kΩ0.1F10 kΩCP11/2 VccFrequency characteristics: 3 kHz (at constant speed)(White)Output “A”(Brown)Output “B”2 kΩmax.2 kΩmax.(Black)0 VPlease consult us for position control applications.RATINGS● LED(at 25 °C)● Photo-sensor(at 25 °C)Maximum current45 mACollector current20 mAReverse voltage4 VCollector to emitter voltage (forward)20 VPower dissipation (PD)75 mWCollector to emitter voltage (reverse)5 VTemp. derating of PD (25 ~ 60 °C)−1.4 mW/°CCollector dissipation (PD)75 mWTemp. derating of PD (25 ~ 60 °C)−1.0 mW/°C Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.