Controlling a relay

Lynxmotion Electronics & Software
1

I need to turn on a 5-volt DC relay using the mini ABB board. I have the SSC-32 Sequencer Software and the SSC-32 Board.

I am new at this and need some help. Please be specific.

Thanks, Tony

2

I found a answer to my problem. It is a servo controled solid state switch. If you are interested look for a RAM-35 switch at.
www.ramrcandramtrack.com I have used there stuff before and have always been happy with their products.
Tony

3

If you want, I think you can do it quite a bit cheaper than that. All the servo outputs on the SSC32 can be configured as simple digital outputs (no pwm). A resistor, an NPN transistor and a flyback diode will drive your relay from one of those pins, or a single logic level n-ch mosfet with a sufficient body diode would do it too.

4

Eh, $40 for a solid state relay? :open_mouth:

Do you really need 5A output?
A Crydom ODC-5 will do 3.5A @ 60V and is under $10, and I doubt you need a driver transistor (10mA load).
crydom.com/userResources/productFamilies/66/crydom_io_odc.pdf
This is like a DigiKey or Jameco item (hobby electronics components vs. hobby robotics)

The suggestion of a (logic level) power FET is a real good idea too (if you handle it carefully and don’t need the isolation of a relay) and probably about the least expensive way to go. (IRFP240PBF, dissipates under 1W at 5A, nice mostly isolated package)

5

Thanks to all of you for answering my post. Your ideas are good ones.