Product Category

Low-cost Encoder with Diameter of 50 mm


General-purpose Absolute Encoder with External Diameter of 50 mm





Power supply voltage

5 VDC -5% to 12 VDC +10%,
 ripple (p-p): 5% max.

12 VDC -10% to 24 VDC +15%, ripple (p-p): 5% max.

Current consumption *1

90 mA max.

70 mA max.

Resolution (rotations)

256 (8-bit)

Output code

Gray code

Output configuration

Open-collector output

Output capacity

Applied voltage: 28 VDC max.
 Sink current: 16 mA max.
 Residual voltage: 0.4 V max. (at sink current of 16 mA)

Maximum response
 frequency *2

5 kHz


Negative logic (high = 0, low = 1)


±1° max.

Direction of rotation

Output code incremented by CW (as viewed from the end of the shaft)

Rise and fall times of

1 μs max. (Control output voltage: 16 V, Load resistance: 1 kΩ, Output cable: 2 m max.)

Starting torque

0.98 mN·m max.

Moment of inertia

1 × 10-6kg·m2 max.



29.4 N


19.6 N

Maximum permissible speed

1,000 r/min

Ambient temperature range

Operating: -10 to 55°C (with no icing), Storage: -25 to 85°C (with no icing)

Ambient humidity range

Operating/Storage: 35% to 85% (with no condensation)

Insulation resistance

200 MΩ min. (at 500 VDC) between current-carrying parts and case

Dielectric strength

500 VAC, 50/60 Hz for 1 min between current-carrying parts and case

Vibration resistance

Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z

Shock resistance

Destruction: 1,000 m/s2 3 times each in X, Y, and Z directions

Degree of protection*3

IEC 60529 IP50

Connection method

Pre-wired Models (Standard cable length: 2 m)

Connector Models (Standard
 cable length: 2 m)


Case: ABS, Main unit: PPS, Shaft: SUS416, Mounting Bracket: Galvanized iron

Weight (packed state)

Approx. 200 g


Coupling (excluding Connector Models), Servo Mounting Bracket,
 Hexagonal wrench (excluding Connector Models), Instruction manual

1. An inrush current of approximately 8 A will flow for approximately 0.3 ms when the power is turned ON.
 2. The maximum electrical response speed is determined by the resolution and maximum response frequency as follows:


This means that the Rotary Encoder will not operate electrically if its speed exceeds the maximum electrical response speed.
 3. No protection is provided against water or oil.