Controlling Electrical Devices with Solid State Relay (SSR).
Solid State Relay (SSR) is more suitable to control high power electrical devices with computer or micro- processors than electrical relays. It required small power, less interference and can drive devices up to 50A. It is recommended to use SSR to control motors or lamps which is above DC/AC 12v.
There are different types of SSR such as DC to DC, AC to AC and DC to AC, etc. Besides, it has various current from 5A to 50A. Check carefully the type of SSR you need in terms of your requirements.
OPERATING HIGH VOLTAGE DEVICES SUCH AS 100V OR 200V DEVICES COULD BE EXTREMELY DANGEROUS. CONSULT YOUR TEACHERS BEFORE ATTEMPTING SUCH EXPERIMENTS!
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The following is an example of controlling an DC 24v motors with SSR using a KMK 13IO card.
We use a DC to DC SSR with input voltage range from DC 6v to 30v and output voltage range from DC 12v to 50v. The wiring below is rather simple, we use the SSR as an electronic switch to switch on and off the motor.
Note:
1. Since driving a SSR requires very small power, it is easy to control 8 DC 24V motos with 8 SSRs by KMK 13IO card. If you need to drive more motors or devices, you can use KMK 12 Output Card, Project Board, 32IO cards or use multiple cards together.
2. Please refer to Simple output with KMK 13IO card for the programming code.
