Encoder Speed Calculation in PLC | encoder speed in ( meter/sec) | RPM Calculation using Encoder |

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Encoder Speed Calculation,
RPM Calculation using Encoder
Speed Measurement with Encoders
PLC Encoder Speed Calculation
How to Calculate Encoder Speed
Encoder Speed Formula
Encoder Pulse and Speed Calculation
RPM Calculation with Incremental Encoder
Encoder Speed Calculation in PLC
The calculation of pulses per revolution (PPR) for an encoder is essential to understand how many pulses the encoder generates for one complete revolution of the shaft it is attached to. PPR is a crucial parameter when working with encoders, especially in applications where precise position or speed control is necessary. To calculate PPR, you'll need to know a few key pieces of information:
Encoder Type: Determine whether you are working with an incremental or absolute encoder, as the calculation method may vary between these types.
Encoder's Output Signal: Find out the output signal type of the encoder, which can be square wave (TTL or HTL), sine/cosine, or gray code. This is important for understanding the number of pulses per cycle.
Here are the PPR calculation methods for different encoder types:
For Incremental Encoders:
Incremental encoders generate a specific number of pulses for each cycle of the encoder disk. To calculate PPR for an incremental encoder:
PPR = (Number of Pulses per Cycle) x (Number of Cycles per Revolution)
Number of Pulses per Cycle: This depends on the number of lines or slots on the encoder disk. Count the number of lines or slots on the encoder disk. This is sometimes specified in the encoder's datasheet as "Pulses per Cycle."
Number of Cycles per Revolution: For most encoders, this is 1 since the encoder generates one full cycle (360 degrees) per revolution.
For Absolute Encoders:
Absolute encoders provide a unique binary or Gray code for each position in the full 360-degree rotation. To calculate PPR for an absolute encoder:
PPR = 2^n
n: The number of bits in the encoder's binary or Gray code. Each bit doubles the resolution. For example, if you have a 12-bit absolute encoder, PPR = 2^12 = 4,096.
For Sinusoidal Encoders:
Sinusoidal encoders generate analog sine and cosine signals. To calculate PPR for a sinusoidal encoder:
PPR = (Number of Full Sine-Cosine Periods) x 360
Number of Full Sine-Cosine Periods: This is the number of complete sine-cosine wave periods within one full rotation. For a single-turn encoder, this is usually one. For a multiturn encoder, it depends on the number of turns or revolutions it can measure.
In some cases, you may need to refer to the encoder's datasheet or manual to find the exact specifications and values for the encoder you're working with. This information should help you calculate the PPR accurately, which is essential for your control system to interpret the encoder's data correctly.
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