Encoder diagnostics & service

This training course covers the contents of the courses "Servicing incremental and absolute encoders" and "Encoders diagnostics".

General topics

• Safety precautions
• Determining the interface of HEIDENHAIN encoders
• Interface description

Functional principles of incremental and absolute encoders

• Scanning principles
• Reference marks
• Mechanic, magnetic, inductive and optoelectronic design
• Output signals
• Interpolation, digitizing, display

PWT testing device

• Possible applications
• Items supplied
• Available functions
• Software updates

PWM inspection device

• General information
  • Safety precautions
• Installation/Initial setup
  • Items supplied
  • Hardware description
  • Specifications
  • Installation of the ATS software
  • Configuration
  • Operating instructions
  • Product keys
• General measurement setup
  • Connecting the testing equipment
  • Overview of cables and connection technology
• Connecting to the encoder
  • Electrical connection (selecting the appropriate input adapter cable)
  • Connection dialogs
  • Selecting encoders by entering the ID number
  • Manual encoder selection
  • Supply voltage
• Testing incremental encoders
  • Voltage display field
  • PWT: checking for proper incremental signals
  • Checking and setting the reference signal
  • Recording signals (documentation)
  • Counter function
  • Measuring Zn/Z1 rotary encoders
• Testing absolute encoders
  • Position display field
  • Incremental signal display field
  • Meaning of EnDat encoder memory areas  
  • Reading and comparing encoder memory contents (backing up)
  • Absolute-incremental deviation
  • Online diagnostics (documentation)
  • Mounting wizards
  • Functional safety: testing procedure and documentation

Mounting and electrical installation

• Factors influencing the machining accuracy of machine tools
• Guideway and machine error compensation
• Mounting instructions (mechanical precautions)
• Electrical connection
• Shielding/grounding
• Purged air systems (design, maintenance and function)

Inspection, corrective action, maintenance and exchange

• Locating an error in an encoder or a position display
• Possibilities of cleaning and repairing
• Replacing sealing lips
• Replacing the scanning unit
• Setting the reference mark
• Mounting instructions

Practical application

• Functional testing on HEIDENHAIN encoders with the PWT 
• Inspection and analysis of HEIDENHAIN encoders with the PWM 
• Determining the required cables using the “Cables and Connection Technologies” user’s manual
• Measuring in closed-loop operation at a machine tool (incremental/absolute EnDat)

If possible, please bring your own PWM and laptop to the course

• That participants understand the basic functions of the PWT testing device 
• To be able to operate the PWM within the measuring circuit of the machine tool and to perform troubleshooting for HEIDENHAIN encoders
• Understanding the functional principles, the mechanical and electrical design of HEIDENHAIN linear and rotary encoders and digitizing electronics as well as their interaction with the subsequent electronics and the machine tool.
• They find error sources and use the appropriate testing/inspection equipment (PWT and PWM) to locate an error.
• By specific maintenance operations or by replacing entire units or assemblies they are in a position to remove errors from HEIDENHAIN equipment.

• Specialists for service, maintenance and mounting

• Fundamentals of electronics / electrical engineering
• Basic computer skills (Windows)