ZKP3808 2000 PPR Hollow Shaft ABZ Rotary Encoder with IP54 Protection & 2m Cable

This encoder provides 2000 Pulses Per Revolution (PPR), which are the raw physical pulses from the A and B channels. When the quadrature signals from both A and B phases are decoded (counting both rising and falling edges), the effective resolution becomes 8000 Counts Per Revolution (CPR). This higher CPR provides finer angular resolution for precise position control applications.

Connect the red wire to a 5-24V DC positive supply and the black wire to 0V/common ground. The green (A), white (B), and yellow (Z) wires are the open-collector signal outputs. Each output must be connected to your controller's input pin through a pull-up resistor (typically 1kΩ to 10kΩ) to the same logic voltage (e.g., 5V or 24V). The silver wire is a shield/drain wire and should be connected to earth ground for noise immunity.

The ZKP3808 uses an NPN open-collector output stage. This means the output transistors can only pull the signal line to ground (low). To generate a logic high voltage, an external pull-up resistor to your controller's logic supply (Vcc) is essential. This configuration also protects the encoder's internal output transistor from damage if the output is accidentally shorted to the supply voltage.

The encoder is rated for a maximum speed of 3000 RPM. With a resolution of 2000 PPR, this generates a maximum output frequency of 100 kHz (2000 pulses/rev * 3000 rev/min / 60 sec/min). The device supports response frequencies up to 300 kHz, providing significant headroom for reliable operation at its maximum rated speed.

Slide the encoder's 8mm diameter hollow shaft directly onto your motor's 8mm output shaft. Align the encoder body to prevent wobble, then use the two supplied M3 x 8mm screws to tighten the clamping mechanism on the encoder housing. This secures the encoder to the motor shaft without the need for a separate coupling, ensuring minimal backlash and concentricity errors.