RE12 Datasheet, PDF (2/3 Pages) Copal Electronics – OPTICAL ENCODERS

RE12
OPTICAL ENCODERS
˙ STANDARD SPECIFICATIONS
O ELECTRICAL CHARACTERISTICS
Item
Resolution _s02
02
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)
O Mechanical characteristics
Starting
torque
Ball bearing
Sleeve bearing
0.05 mN·m {0.5 gf·cm} maximum
0.4 mN·m {4 gf·cm} maximum
Inertia
0.01 g·cm² maximum
Shaft
loading
Radial
Axial
1.96 N {200 gf} maximum
4.9 N {500 gf} maximum
Net weight
Approx. 10 g
O Output signal level & Amplitude variation
S min S max
O Environmental characteristics
Operating temp. range
−10 ~ 50 °C
Storage temp.range
−20 ~ 80 °C
Protection grade
IP40
˞Output signal levelɿ 100, 200 P/R _{Smin ʾ 0.15 V,} 300 P/R _{Smin ʾ 0.10 V}
Amplitude variationɿ _{100, 200 P/R (Smax/Smin-1) × 100 ʽ 40 %}
300 P/R (Smax/Smin-1) × 100 ʽ 50 %
˙ RELIABILITY TEST
The output shall satisfy the criteria below after the following tests.
Test item
Test conditions
Vibration
Power 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.
Shock
Power OFF
High temperature ^{Power OFF}
exposure
Power ON
Low temperature ^{Power OFF}
exposure
Power ON
Humidity
Power OFF
Thermal shock Power OFF
1 time each in 6 directions (X, Y, Z) at 490 m/s² (50 G), 11 ms.
80 °C 96 h
50 °C 96 h
− 20 °C 96 h
(To be measured after leaving samples for 1 h at normal temperature and
humidity after the test.)
− 10 °C 96 h

°CɹRelative humidity
 ʙ 
ɹ
I
(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.)

°Cɹ
Iɺ− 
°Cɹ
I
O Criteria
Output signal level
Amplitude variation
s02
S min ʾ 0.13 V
(S max / S min – 1) × 100 ʽ 45 %
300 P/R
S min ʾ 0.08 V
(S max / S min – 1) × 100 ʽ 55 %
Measurement point
CP1 in ‘MEASUREMENT CIRCUIT’
CP2 in ‘MEASUREMENT CIRCUIT’