MICRONOR AG
MR340-1 DIN Rail Module Controller
Page 6 of 74
1.
Product Description
1.1
Incremental Encoder Background
Incremental encoders are typically used to sense the motion and speed of a motor shaft.
Typically the encoder outputs two phase-shifted signals. Depending on the direction of
movement, the phase shift is 90° or -90°, this signal is referred to as the Quadrature
Signal.
Typically these encoders incorporate electronics and are susceptible to electrical interferences
(EMI/RFI). Examples include:
•
Pipe and tube welding produces extreme interference
•
MRI machines operate under an extremely strong electromagnetic field
•
Surgical robots must perform 100% reliably
•
Aerospace actuators operate in and around other noise generating avionics
An all-optical, non-electronic passive solution such as the fiber optic encoder provides
completely immunity to such interferences.
1.2
Fiber Optic Incremental Sensor
The MR340 series is Micronor’s 3
rd
Generation fiber optic incremental encoder system. It’s
innovative all-optical design offers immunity to any electro-magnetic interference such as
lightning, radiation, magnetic fields and other harsh environmental conditions. The fiber optic
aspect of the sensor also makes it perfectly suited for long distance speed and position
sensing over hundreds of meters without being affected by ground loop problems.
Figure 1. MR340 Series Fiber Optic Encoder System Family
