Ok, any help would be great.
I am looking for a device to activate a speed warning sign for semi trucks. I have a device that has two 12V dc optocouplers that I need input from each to get a signal. One is a presence detector the other is a speed detector. One of the optocouplers will only give me a 1ms pulse.
I then need to control a relay (be nice if it was built in to the PLC) to give 120VAC to the flasher sign. I want to have the sign active for 7 seconds, so instead of a separate timing circuit I would like to have the PLC control the timing.
Also, to make it more fun it has to be a low temp device for minnesota weather.
Any thoughts on what device can do this.
I am looking for a device to activate a speed warning sign for semi trucks. I have a device that has two 12V dc optocouplers that I need input from each to get a signal. One is a presence detector the other is a speed detector. One of the optocouplers will only give me a 1ms pulse.
I then need to control a relay (be nice if it was built in to the PLC) to give 120VAC to the flasher sign. I want to have the sign active for 7 seconds, so instead of a separate timing circuit I would like to have the PLC control the timing.
Also, to make it more fun it has to be a low temp device for minnesota weather.
Any thoughts on what device can do this.