No. That relay is just an on/off relay. No soft-start
Hey Mike and nickyb, I picked up one of these modules from a 2011 Infinity G25 at the wreckers to mess around with it. So here is what I figured out tonight.
I started with an OEM Contour fan setup with the factory wiring including the use of the thermoresistor for low speed basically what I talked about in my video in this thread. I do not have a PWM controller so wanted to see what would happen.
So I have a ground from the Contour harness that I connected to one of the output grounds for the module. Then I connected either the low speed power wire or the high speed wire. Then just connected main power and ground for module to a battery. Both worked as they normally do on a Contour AND BOTH HAD A SOFT START.
This means you can have an alternative dual speed Contour fan set up with soft start for both modes. Simply take your dual temp sensor (BMW, Audi/VW, whatever), ideally installed in lower rad hose or discharge side of rad. Wire the low speed output from your sensor to trigger a relay that will provide power to the thermoresistor. The second wire at the thermoresistor will then connect to the power wire for the module. Wire each of the fans to the module as you have shown Mike in your video above. Then take the high speed output from your sensor to trigger another relay that will connect to the power wire for the module. This will give you Contour high and low speed with soft starts on each.
You will be able to use lower rated relays (OEM Contour being 70A). As Mike indicated in post #1, 30A relays should suffice for providing power to the module. Wire gauge can be reduced as well.
How would the wiring diagram look like. Just like Mike's in post #1 except the "key on" would be the low or high speed signal from the temp switch. There would be 2 relays (one for high, one for low) and they would both connect to the red wire going into the module. The low speed red wire would go through the thermoresistor before connecting to the module.
Video demonstrating soft starts without PWM.
View: https://www.youtube.com/watch?v=bSmm_iDqrzc