National-instruments Quadrature Input Module FP-QUAD-510 Manual do Utilizador descarregar pdf (Página 4)

FP-QUAD-510 4 www.ni.com

Figure 3.

Basic Field Connections to Single-Ended Encoders

The FP-QUAD-510 supports differential inputs for Phase A,

Phase B, and Index signals. You can easily accommodate encoders

with various phase relationships by swapping the signals and/or

connecting them to the inverting inputs as specific applications

require.

The Index signal must occur when both the Phase A and Phase B

signals are low, as shown in Figure 4. If the index polarity is

inverted, try reversing the +Index and –Index signals on differential

encoders or using the –Index input on single-ended encoders.

Figure 4.

Encoder Signal Phasing

Table 1 lists the terminal assignments for the signals of each axis.

+A and –A represent the Phase A signals, +B and –B represent the

Phase B signals, and +I and –I represent the Index signals.

+Index

+5 V

GND

Encoder

+5 V

Reg

+–

–A

–B

–I

sup

COM

Phase A

Phase B

Index

1 2 3 4 5 6 7 8 9 10 11 12

Sem comentários

National-instruments Quadrature Input Module FP-QUAD-510 Manual do Utilizador Página 4