Relay, Optoisolator, and Stepper Motor Interfacing

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Presentation transcript:

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

Relay Diagrams

Selected DIP Relay Characteristics (www.Jameco.com) Part No. Contact Form Coil Volts Coil Ohms Contact Volts Current 106462CP SPST-NO 5 VDC 500 100 VDC 0.5 A 138430CP 106471CP 12 VDC 1000 138448CP 129875CP DPDT 62.5 30 VDC 1 A

ARM Connection to Relay

Selected Solid-State Relay Characteristics (www.Jameco.com) Part No. Contact Style Control Volts Contact Volts Contact Current 143058CP SPST 4-32 VDC 240 VAC 3 A 139053CP 3-32 VDC 25 A 162341CP 10 A 172591CP 60 VAC 2 A 175222CP 4 A 176647CP 120 VAC 5 A

ARM Connection to a Solid-State Relay

Reed Switch and Magnet Combination

Optoisolator Package Examples

Controlling a Lamp via an Optoisolator

Rotor Alignment

Stator Winding Configuration

Normal Four-Step Sequence Clockwise Step # Winding A Winding B Winding C Winding D Counter Clockwise 1 2 3 4

Stepper Motor Step Angles Step per Revolution 0.72 500 1.8 200 2.0 180 2.5 144 5.0 72 7.5 48 15 24

ARM Connection to Stepper Motor

Half-Step 8-Step Sequence Clockwise Step # Winding A Winding B Winding C Winding D Counter Clockwise 1 2 3 4 5 6 7 8

Wave Drive 4-Step Sequence Clockwise Step # Winding A Winding B Winding C Winding D Counter Clockwise 1 2 3 4

Selected Stepper Motor Characteristics (www.Jameco.com) Part No. Step Angle Drive System Volts Phase Resistance Current 151861CP 7.5 unipolar 5 V 9 ohms 550 mA 171601CP 3.6 7 V 20 ohms 350 mA 164056CP bipolar 6 ohms 800 mA

Common Stepper Motor Types

Using Transistors for Stepper Motor Driver

Darlington Transistor Listing NPN PNP VCEO (volts) IC (amps) hfe (common) TIP110 TIP115 60 2 1000 TIP111 TIP116 80 TIP112 TIP117 100 TIP120 TIP125 5 TIP121 TIP126 TIP122 TIP127 TIP140 TIP145 10 TIP141 TIP146 TIP142 TIP147

Controlling Stepper Motor via Optoisolator