Chapter 10 Relay, Optoisolator, and Stepper Motor Interfacing 1.

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Presentation transcript:

Chapter 10 Relay, Optoisolator, and Stepper Motor Interfacing 1

Relay Diagrams 2

Selected DIP Relay Characteristics ( 3 Part No.Contact FormCoil VoltsCoil OhmsContact VoltsCurrent CPSPST-NO5 VDC VDC0.5 A CPSPST-NO5 VDC VDC0.5 A CPSPST-NO12 VDC VDC0.5 A CPSPST-NO12 VDC VDC0.5 A CPDPDT5 VDC VDC1 A

ARM Connection to Relay 4

Selected Solid-State Relay Characteristics ( 5 Part No.Contact StyleControl VoltsContact VoltsContact Current CPSPST4-32 VDC240 VAC3 A CPSPST3-32 VDC240 VAC25 A CPSPST3-32 VDC240 VAC10 A CPSPST3-32 VDC60 VAC2 A CPSPST3-32 VDC60 VAC4 A CPSPST3-32 VDC120 VAC5 A

ARM Connection to a Solid-State Relay 6

Reed Switch and Magnet Combination 7

Optoisolator Package Examples 8

Controlling a Lamp via an Optoisolator 9

Rotor Alignment 10

Stator Winding Configuration 11

12 Clockwise Step #Winding AWinding BWinding CWinding D Counter Clockwise

Stepper Motor Step Angles 13 Step AngleStep per Revolution

ARM Connection to Stepper Motor 14

Half-Step 8-Step Sequence 15 Clockwise Step #Winding AWinding BWinding CWinding D Counter Clockwise

Wave Drive 4-Step Sequence 16 Clockwise Step #Winding AWinding BWinding CWinding D Counter Clockwise

Selected Stepper Motor Characteristics ( 17 Part No.Step AngleDrive SystemVolts Phase Resistance Current CP7.5unipolar5 V9 ohms550 mA CP3.6unipolar7 V20 ohms350 mA CP7.5bipolar5 V6 ohms800 mA

Common Stepper Motor Types 18

Using Transistors for Stepper Motor Driver 19

Darlington Transistor Listing 20 NPNPNPV CEO (volts)I C (amps)hfe (common) TIP110TIP TIP111TIP TIP112TIP TIP120TIP TIP121TIP TIP122TIP TIP140TIP TIP141TIP TIP142TIP

Controlling Stepper Motor via Optoisolator 21