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Roller/flywheel Sensor (RPM1)

Sensor Mount

The RPM sensor should be mounted rigid, without any type of rubber or cushioning. It is recommended to use a metal bracket fix it at a distance of 0.5mm to 1mm from the north pole of the magnet.

Threaded NJK5002C RPM Sensor

The RPM sensor should be mounted rigid, without any type of rubber or cushioning. It is recommended to use a metal or plastic clamp to fix it at a distance of 0.5mm to 1mm from the north pole of the magnet.

Smooth cylinder sensor

Magnet Installation

The magnet must be mounted on the flywheel or side of the roller, preferably away from the axle, although it also works if it is mounted on the axle.

We are currently supplying magnets with a sticker indicating the north pole. The sticker must point to the sensor.

Threaded NJK5002C RPM Sensor

We are currently supplying magnets with a sticker indicating the north pole. The sticker must point to the sensor.

Smooth cylinder sensor

WARNING

The north pole of the magnet must be in the direction of the rotation sensor.

To mount the magnet, use a 2-component epoxy-type adhesive. It is recommended to mount the magnet into a shallow hole on the flywheel or roller.

In the event that the assembly is carried out on a ferromagnetic material such as iron or steel, it is recommended that the magnet is not embedded in the hole, but should protrude approximately 0.5mm. This is to prevent the iron from absorbing the magnetic field lines, which would cause the need to mount the sensor closer to the magnet.

TEST

You can use the interface to test the sensor and the correct mounting of the magnet.

  • Software must not be open.
  • Connect the USB port of the Accudyno interface to the PC.
  • Also connect the rotation sensor to the RPM1 input.
  • Move the sensor closer to the magnet. You will see the green led on the interface change state from flashing to steady on.
  • When removing the magnet, the light will turn off.

RPM1 Input Pinout

Roller RPM Terminal Block

Number Function Color Range Signal in Software
1 Signal Black Digital input with 2K pullup 13
2 VCC White +5V for sensor
3 GND Yellow 0V

Pulses per revolution: software programmable.

Provided Sensor Specifications

Type NJ5002C Hall Effect Sensor
Supply Voltage 5V Nominal / 24V max
Magnetic Polarity Active by north pole (unipolar only)
Output Type Open Collector
Working distance With neodymium magnet ~1 mm
Diameter 12mm
Thread M12
Length 37mm
Cable length 3.5m
Magnet Neodymium. Diameter 5 or 6mm. Thickness 2.5mm
Connection Black: Signal / Blue: GND / Brown: VCC
Type Hall Effect Sensor
Supply Voltage 5V Nominal / 24V max
Magnetic Polarity Active by north pole (unipolar only)
Output Type Open Collector
Working distance With neodymium magnet ~1 mm
Diameter 15.9mm
Length 80mm
Cable length 3.5m
Magnet Neodymium. Diameter 5 or 6mm. Thickness 2.5mm
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