The case device

EncoderAnalyzer in a measurement case with four measurement connections and built-in laptop. The high-quality laptop – with Windows^® operating system – is connected to the EncoderAnalyzer via a docking station. This allows the laptop to be removed from the measurement case and used for other tasks. To protect the valuable contents, the measurement case is lockable.

The lid of the case is equipped with a hold-down device. It ensures that the laptop is securely pressed into the docking station when the case lid is closed.

The EncoderAnalyzer and laptop are supplied with mains voltage via the built-in power Connection. A specialized built-in lithium-ion battery enables Testing even without mains power. This allows for mains-independent Tests to be run on-site.

The desktop device

EncoderAnalyzer desktop device with up to four measurement connections on the front panel. The connection for the LAN cable to the PC is located on the rear panel. The EncoderAnalyzer is powered by an external power supply.

The EncoderAnalyzer provides valuable services in simplifying rotary button Testing. It supplies the encoder with voltage and measures all signals. It then automatically evaluates them. As a result, you receive a clear GO (in order) or NOGO (not in order).

These rotary buttons and sensor systems can be tested:

• Incremental square wave encoder with A, /A, B, /B, N, /N, U, /U, V, /V, W, /W 6-channel EncoderAnalyzer
• Sine-cosine encoder with sin, /sin, cos, /cos, ref, /ref
• Hall elements with A, /A, B, /B, N, /N
• Hall elements with U, /U, V, /V, W, /W
• Commutation signals / Block commutation
• Multiturn absolute encoder with SSI and HIPERFACE interface
  • optional Resolver
  • optional 3-phase Motor current measurement during operation
  • optional EMF voltage measurement up to 700 V
  • optional resolver adjustment with respect to the Motor-EMF
  • optional programming of the angle offset in the rotary button

The EncoderAnalyzer consists of two components: the measurement module and the analysis software, which is installed on a PC. The measurement module is connected via a measurement lead to the rotary button to be tested and performs the measurements. For this purpose, it determines several million measured values during one revolution of the rotary button and transmits them to the PC. Communication between the measurement module and the PC occurs via a Gigabit Ethernet connection. With the help of the analysis software, the measured values are automatically evaluated. At the end of the analysis, the software displays the analysis result on the monitor. For better understanding, the errors of a defective rotary button can also be displayed graphically, similar to an oscilloscope.

The test results are stored in a modern MS-SQL memory. If required, a detailed test report can be printed.

A voltage supply of 3 – 30 V for the rotary button is built-in in the Encoder-Analyzer. The voltage level and the maximum permissible current consumption are set by the operator via software input according to the encoder type. During the Test, the EncoderAnalyzer measures the current consumption for monitoring. If the set maximum value is exceeded, the voltage supply is automatically switched off.

The fast, intelligent measurement technology and the operator-friendly, intuitive evaluation software are perfectly coordinated. A few setting clicks and selection options are sufficient to configure the Test for the connected encoder type.

The connection and evaluation of an encoder are supported by the software. All inputs in the analysis software are provided with extensive help information. The comprehensive evaluations lead to clear and comprehensible results. No special detailed knowledge is required for operating the evaluation software.

After entering the test parameters, the measurement is started. The EncoderAnalyzer records the measured values from at least one encoder revolution. After that, the fully automatic evaluation takes place. The EncoderAnalyzer lists all measurement results of the analysis in a table.

Additionally, all faulty signal points of the fully analyzed revolution are listed in an error list. By clicking on the entries in the error list, the EncoderAnalyzer displays the signal images at the error location zoomed in, similar to an oscilloscope display. This provides you with visual information about the type of error.

The software has a memory in which thousands of encoders and resolvers can be stored.

Data such as encoder type, supply voltage, pin assignment, etc., must be contained in the memory. Based on this information, the software indicates which Connection cable must be used and how the encoder is connected.

Furthermore, the memory contains additional information that, while not metrologically relevant, provides details about the encoder.

Angle Alignment

Complementing the rotary button analysis, the software also provides significant support for the angle alignment of the rotary button. Regardless of whether the rotary button needs to be adjusted by mechanical rotation or only the angle offset needs to be determined, the software graphically assists the operator during the adjustment process.

Depending on the rotary button type, manufacturer, and the EncoderAnalyzer's features, the offset angle can then also be written to the rotary button.

• Encoder Analysis – no prior knowledge required
• Automatic Checking of All Encoder Signals
• Verification of all signal pulses per revolution
• Determination of the pulse count per revolution
• Verification of all 90º phase shifts between the signals per revolution
• Automatic testing of all signal voltages per revolution
• Sense of rotation and rotational speed of the rotary button
• Angle error testing per revolution
• Angle alignment of rotary buttons
• EMF measurement on all three Motor phases to align resolvers, encoders, or Hall elements
• Saving the angle offset in the rotary button via the data interface
• EMF measurement for ke-value determination during coasting and normalization to 1,000 RPM
• EMF symmetry measurement during coasting
• Incremental encoder test with A – /A – B – /B – Z – /Z tracks
• Sine-cosine rotary button test with sin – /sin – cos – /cos – N – /N tracks
• Resolver test
• Hall element test, evaluation of the three commutation signals
• Encoder interfaces via SSI, EnDat, HIPERFACE
• Measurement module with 12 high-speed measurement channels
• Built-in adjustable voltage supply for the encoders
• Built-in reference signal source for resolvers
• Windows^® software for evaluating measurement signals
• Oscilloscope-like display of all measurement signals
• SQL memory for encoder models sorted by manufacturer and type
• Multilingual operator interface