Specification of SPH3A0 Series of Positive and Negative Rotation Speed Sensor Rev.：V1 I. Working Principle: SPH3A0 series of positive and negative rotation speed sensor is tested by Hall principle. Two pcs of magnets with opposite poles need to be fixed on the axis and wheel (the two pcs of magnets are symmetrically distributed, and N pole of one magnet should be fixed facing the sensor and S pole of another magnet should be fixed facing the sensor), and fix the of the arrow on the sensor’s probe test surface facing the rotating arc of the magnet. When the wheel or the axis rotating, it takes the magnet sweep over the sensor’s probe, and the blue wire outputs positive and negative rotating signal, and white wire outputs rotating speed signal. II. Technical Parameters a) Power supply voltage: direct current DC 5V～ 24V; b) Output method: open-collector output; c) Probe detection distance: recommended distance 5～10mm; d) Working environment: temperature -20℃～+80℃; moisture≦90%; e) Signal status: The blue wire output indicates direction, when at original status or positive rotating, it outputs low electrical level, green light is on, and the positive rotating direction is the same with the arrow direction. When negative rotating, it outputs high electrical level, red light is on, and the negative rotating direction is the opposite to the arrow direction.

Specification of SPH3A0 Series of Positive and Negative Rotation Speed Sensor Rev.：V1 The white wire output indicates rotating speed, and it is the square wave signal. f) Protection level: IP65 leve. g) Anti-vibration ability: 5G under normal situation. ( indicator light) IV. Wire Connecting Method Lead Wire Specification Definition of Cable’s Color Positive Pole of Power Supply Positive and Negative Rotating Signal Output Negative Pole of Power Supply Rotating Speed Signal Output Black White Shenzhen SOWAY TECH LIMI

Specification of SPH3A0 Series of Positive and Negative Rotation Speed Sensor Rev.：V1 V. Components Specification Positive and Negative Rotating Sensor Magnet Bracket VI. Product Model: SPH3A0-10B-V-MEP10 Examples for Installstion: relevant position of arrow direction and rotating drum magnet on the rotating drum Shenzhen SOWAY TECH LIMITED

Specification of SPH3A0 Series of Positive and Negative Rotation Speed Sensor Rev.：V1 VII. Matters Needed Attention： 1) When the turntable stops, the sensor output maintains the original status. When positive rotating, it stops maintaining low electrical level. And when negative rotating, it stops maintaining high electrical level. 2) The power supply voltage cannot exceed the range, otherwise it will lead to the damage of the core components. 3) Recommended installing distance between sensor probe and magnet is 5～10mm. 4) Stalling testing time is one minute, if the actual rotating speed is too...