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Rotary encoders RE12

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Small size, high resolution and low cost

  • φ12 mm, High resolution up to 300 P/R
  • Cost effective
  • Two bearing types to choose from;
    Sleeve bearing or ball bearing
  • Low torque, low inertia
  • RoHS compliant

PART NUMBER DESIGNATION

RE12A-100-100-1

Series name

Bearing

A:Ball bearing
C:Sleeve bearing

Resolution (P/R)

100, 200, 300

Output phase:“A”

Input voltage : 5 V

No AMP

Output connection

1:Cable wire

LIST OF PART NUMBERS

Part numberBearingResolution
RE12A-100-100-1 Ball Bearing 100 P/R
RE12A-200-100-1 Ball Bearing 200 P/R
RE12A-300-100-1 Ball Bearing 300 P/R
RE12C-100-100-1 Sleeve Bearing 100 P/R
RE12C-200-100-1 Sleeve Bearing 200 P/R
RE12C-300-100-1 Sleeve Bearing 300 P/R

ELECTRICAL CHARACTERISTICS

Resolution100・200 P/R300 P/R
Photo-sensor maximum current 50 mA maximum (at 25 °C)
Output wave form Quasi-sinusoidal
Output signal ※1 150 mVp-p minimum 100 mVp-p minimum
Output signal
amplitude variation ※2 
40 % maximum 50 % maximum
Light source LED

※1:Measured at CP1 as per the Fig. A of ‘MEASUREMENT CIRCUIT’ on the following page. (3 kHz)
※2 : Measured at CP2 as per the Fig. A of ‘MEASUREMENT CIRCUIT’ on the following page. (3 kHz)

⦿MEASUREMENT CIRCUIT

Mechanical characteristics

Starting torqueBall bearing 0.05 mN·m {0.5 gf·cm} maximum
Sleeve bearing 0.4 mN·m {4 gf·cm} maximum
Inertia 0.01 g·cmmaximum
Shaft loadingRadial 1.96 N {200 gf} maximum
Axial 4.9 N {500 gf} maximum
Net weight Approx. 10 g

Environmental characteristics

Operating temp. range −10 ~ 50 °C
Storage temp.range −20 ~ 80 °C
Protection grade IP40

Output signal level & Amplitude variation

⦿ Criteria
項目100・200 P/R300 P/RMeasurement point
Output signal level S min ≧ 0.13 V S min ≧ 0.08 V CP1 in ‘MEASUREMENT CIRCUIT’
Amplitude variation (S max / S min – 1) × 100 ≦ 45 % (S max / S min – 1) × 100 ≦ 55 % CP2 in ‘MEASUREMENT CIRCUIT’
⦿ MEASUREMENT CIRCUIT

RELIABILITY TEST

Test itemTest conditions
VibrationPower OFF Amplitude : 1.52 mm or 98.1 m/s2(10 G) whichever is smaller.
10 ~ 500 Hz excursion 5 min/cycle, 1 hour each for X, Y, Z, directions.
ShockPower OFF 1 time each in 6 directions (X, Y, Z) at 490 m/s2 (50 G), 11 ms.
High temperature
exposure
Power OFF 80 °C  96 h (To be measured after leaving samples for 1 h at normal temperature and humidity after the test.)
Power ON 50 °C  96 h
Low temperature
exposure
Power OFF − 20 °C  96 h
Power ON − 10 °C 96 h
HumidityPower OFF 40 °C  Relative humidity 90 〜 95 %   96 h
(To be measured after wiping out moisture and leaving samples for 1 h at normal temperature and humidity after the test.)
Thermal shockPower OFF 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.)
80 °C 1 h、-20 °C 1 h

OUTLINE DIMENSIONS

Unless otherwise specified, tolerance : ± 0.4 (Unit : mm)

 

INTERNAL CIRCUIT

MEASUREMENT CIRCUIT

*The above contents and descriptions are subject to change without notice. 

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