If there is no Z signal on a NorthStar SLIM Tach® product, what is the most probable cause?
If the gap between the wheel and the SLIM Tach® frame near the sensor is greater than .006″, the sensor will not be able to pick up the Z pulse. Check C-face concentricity. Use the M100 Encoder Tester to check for this type of problem. If you are testing for a Z marker, the M100 Encoder Tester must be in the option 3 position signal type or it will not be able to recognize the Z pulses.