Incremental Photoelectric Rotary Encoder 400P/R

This industrial rotary encoder from DFRobot has an aluminium metal housing and a stainless steel shaft. A slotted disc with optocoupler generates two pulse signals A and B offset by 90° with 400 pulses per revolution each, 1600 with fourfold evaluation. This allows speed, angle and direction of rotation to be measured up to 5000 rpm. According to DFRobot and the label (model RT3806-AB-400N), the encoder is operated at 5 V DC.

Important: Outputs A and B are NPN open collector and need pull-up resistors to VCC. Two 10 kΩ resistors are included; alternatively, use the internal pull-ups of the microcontroller.

Features:

• 400 pulses per revolution and phase, 1600 with fourfold evaluation
• Tracks A and B offset by 90°, direction of rotation detectable
• NPN open collector outputs
• Up to 5000 rpm
• Metal housing, 6 mm stainless steel shaft
• Mounting bracket and 6 mm coupling included

Application Examples:

• Measuring the speed and position of motors
• Measuring angle and angular velocity
• Feedback for controlling drives
• Distance and length measurement via a roller

Documentation:

• Wiki DFRobot SEN0230

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0230
• Model (label): RT3806-AB-400N
• Supply voltage: 5 V DC
• Resolution: 400 pulses per revolution
• Output: NPN open collector, tracks A and B
• Speed: max. 5000 rpm
• Pinout: red VCC, black GND, white A, green B
• Housing: Ø 39 × 36.5 mm
• Shaft: Ø 6 × 13 mm
• Shaft collar: Ø 20 × 4.85 mm
• Mounting: M3 screws
• Weight: 234 g

Scope of Delivery:

• 1× rotary encoder 400 P/R
• 1× mounting bracket
• 1× coupling 6 mm
• 1× screw set
• 2× resistor 10 kΩ