Dynapar LED Output Indicator Option

Green light emitting diodes (LEDs) are connected to the signal outputs of the encoder. Set to turn on when the output voltage falls below 2 volts, the LEDs will alternate as the encoder shaft is rotated. For models with differential, or complimentary outputs, a green LED is connected to the non-inverting output and a red LED is connected to the inverting output. In this case, the LED will alternate green-red as the non-inverting output, then the inverting output alternately pulse.

A visual indication of the status of the Index output - also called the Reference, Zero or Marker pulse - makes alignment of the electrical output to a physical point on the machine or process much easier. The encoder shaft is simply rotated until the Index LED turns on, then the shaft coupling is tightened to keep the encoder aligned with the mechanics.

Constant green or red LEDs indicate the corresponding output is permanently grounded, whereas no (green or red) indicating shows that an output is tied to the power supply. Yellow indications occur when both the green and red LEDs turn on at the same time, pointing to a grounded signal at the output that fails to turn off.

The LED Output Indicator Option is packaged in a sealed extruded aluminum housing, providing a rugged, washdown rated and high noise immunity feature that does not derate the encoder performance. Current draw is only 0.5 mA per channel, and the circuitry works with all electrical output configurations.