1. Generation of wrong pulse by noise.

Please reduce the influence of the noise. 

Please keep wiring as far away from single piping and the noise source (inverter motor) as possible.

2. Gap of the change of output data and reading timing by becoming long at the rise time of signal when the cable is extended.

We recommend the rotary encoder with the strobe signal that informs of reading timing.

Or please use the Gray code type instead of the binary code and the BCD code.

Please annul this data and read it again as measures on the receiver side when the reading data changes greatly compared with last time.

3. Inaccurate transmission of rotation by slipping of transmission system (coupling and belt).

Please defend the mounting procedure of the rotary encoder and notes of the mounting, and confirm whether coupling is correctly mounted or the transmission system doesn't run idle.