PID Help!

Hello all, I just joined this forum today and am very excited to reuse plastic and make different objects with them. I have built the injection machine and am now trying to figure out the mypin PID. I believe I have it all hooked up properly however i simply can not get the band heaters to heat up. I believe the perameters in the PID are not set up properly to communicate to the heaters to start. Any help at all would be greatly appreciated, I have been doing research for 3 weeks on how to get them to heat up and still can not figure it out. Thanks in advance!

Are you sure that you hooked it up like in this schema?