Optical Rotary Encoders
Magnetic Rotary Encoders
Hazardous Area Encoders
Non Contact Encoders
Ethernet Protocol Encoders
View All Accessories
Aerospace & Defense
Off Highway Vehicles
Oil & Gas
Measuring Conveyor Speed
Measuring Angles with Encoders
Measuring Linear Distance
Measuring with Draw Wire Encoders
Measuring Position with Encoders
Service & Support Overview
Competitor Parts List
Discontinued Encoder Guide
Product Manuals & Installation Guides
Featured Crossover Guides
Avtron Encoder Crossovers
DRC Encoder Crossovers
Sick-Stegmann Encoder Crossovers
Allen Bradley Encoder Crossovers
Accu-coder Encoder Crossovers
BEI Encoder Crossovers
Koyo Encoder Crossovers
How to Choose Feedback
Encoder Issues and Troubleshooting
White Paper Downloads
Power Point Downloads
How to Specify a Resolver
Draw Wire Encoders
Hall Effect Encoders
Encoder Accuracy vs Resolution
Encoder Wiring Best Practices
Single-Turn vs Multi-Turn Encoders
How to Split an Encoder’s Signal
Troubleshoot Encoder Signal Issues
Extended encoder pulses are a phenomenon where the leading and/or trailing edges of the pulses are elongated. This can cause the counts to be read incorrectly, introducing errors into the calculation of position and/or speed.
Free White Paper: Understanding Encoder IP Ratings
Extended encoder pulses are typically caused by mounting issues. If the effect is small and restricted to only some pulses/channels, it is probably caused by a loose coupler. If the margins are very broad, the issue is more likely a loose encoder that is turning along with the motor shaft. This is a common problem with hollow-bore encoders when the encoder tether is loose or incorrectly attached.
Extended encoder pulses caused by loose couplings
Extended encoder pulses caused by a loose encoder
Are the margins of the pulses broadened?
Do extended pulses appear on some channels or all channels?
When in operation, is the encoder physically moving or stationary?
Extended encoder pulses are most likely a system issue and not an issue with the encoder itself. Ensure that the encoder is properly mounted and check the shaft coupler and tether (if using a hollow-bore encoder). Make sure that it does not rotate with the motor shaft.