Encoder Signals - National Instruments NI 9505 Operating Instructions And Specifications

Dc brushed servo drive

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Figure 7 shows clockwise and counterclockwise motor rotation.

Figure 7. Clockwise and Counterclockwise Motor Rotation

If the motor does not turn in the desired direction,

Tip

reverse the MOTOR+ and MOTOR- signals.

Encoder Signals

The encoder signals consist of a Phase A, Phase B, and Index

(Phase Z) input. The NI 9505 supports differential and

single-ended inputs for Phase A, Phase B, and Index (Phase Z)

signals. Figures 8 and 9 show simplified schematic diagrams of the

encoder input circuit connected to differential and single-ended

inputs. You can also accommodate open-collector output encoders

NI 9505 Operating Instructions and Specifications | © National Instruments | 21

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