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Rotary encoders RMS20

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250P/R, 256P/R so easy setting

  • High resolution of 256 P/R and fine setting
  • Lower consumption of electric power (15 mA maximum) due to magnetic method
  • Long life for 105 times continuous run due to contactless & magnetic method
  • Square wave output (with Amp.)
  • Smooth rotation for setting
  • RoHS compliant

PART NUMBER DESIGNATION

RMS20 -250-201-1

Series name

Resolution (P/R)

100, 250, 256

Output phase

2:“A” & “B”

 

 

Output connection

1:Cable wire

LIST OF PART NUMBERS

Part numberResolutionInput voltage
RMS20-100-201-1 100 (P/R) 5 V
RMS20-250-201-1 250 (P/R)
RMS20-256-201-1 256 (P/R)

Electrical characteristics

Input voltage DC5 V ± 5 %
Input current 15 mA maximum (No load)
Output wave form Square wave
Output phases A, B
Resolution (P/R) 100 250 256
Phase difference of outputs A & B 90° ± 45°
Maximum frequency response 5 kHz
Output signal“1 (High)” + 4.5 V minimum
“0 (Low)” + 0.5 V maximum
Sensor Magnetoresistive element

Mechanical characteristics

Rotational torque 4.90 mN·m {50 gf·cm} maximum
Inertia 3 g·cmmaximum
Shaft loading
(When mounting)

Radial 9.81 N {1 kgf} maximum
Axial 9.81 N {1 kgf} maximum
Rotational life 10revolution
Net weight Approx. 20 g
Strength of tighten screw 0.49 N·m {5 kgf·cm} maximum

Environmental characteristics

Operating temp. range − 10 ~ 60 °C
Storage temp. range − 40 ~ 70 °C
Protection grade IP40

RELIABILITY TEST

◆The output shall satisfy the criteria below after the following tests.

Test itemTest conditions
VibrationPower OFF Amplitude : 1.52 mm or 98.1m/s2 (10 G) whichever is smaller.
10 ~ 500 Hz excursion 15 min/cycle, 8 cycles each for X, Y, Z, directions.
ShockPower OFF 3 times each in directions (X, Z) at 490 m/s2 (50 G), 11 ms.
High temperature
exposure
Power OFF 70 °C  96 h (To be measured after leaving samples for 1 h at normal temperature and
humidity after the test.)
Power ON 60 °C  96 h
Low temperature
exposure
Power OFF − 40 °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.)
70 °C 0.5 h、− 40 °C 0.5 h

OUTLINE DIMENSIONS

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

OUTPUT

ELECTRICAL WIRING

OUTPUT CIRCUIT

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

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