1) If the VFD has arrived (ask Robert), look into connections, documentation, see if everything from last week still stands. If not, make a list of what else we needs or any other relevant notes.
2) As you know, the LIM has two yellow wires (thermistor wires). These wires are essentially one wire: so if we input something into one yellow wire, it will come out as output from the other yellow wire. If the LIM overheats, the LIM automatically disconnects these yellow wires, so now if we input something from one wire, we won't get any output from it. For testing (and the actual model), if the LIM overheats, we want to cut off the power supply to the LIM. Here's my design to achieve this:
We would need to use something called a DC contactor. When a constant power (12 V in this picture) is supplied to a contactor, it connects inputs to output. When no power is supplied, the contactor disconnects the input and output. So, if the LIM overheats and disconnects the yellow wires, this will prevent the contactor from receiving power, and it will disconnect the battery pack and the VFD.
To do: Understand contactors, how they work, and find one that works for our application. Should be able to handle 325V and 30 A of current.
Two things for this sprint:
1) If the VFD has arrived (ask Robert), look into connections, documentation, see if everything from last week still stands. If not, make a list of what else we needs or any other relevant notes.
2) As you know, the LIM has two yellow wires (thermistor wires). These wires are essentially one wire: so if we input something into one yellow wire, it will come out as output from the other yellow wire. If the LIM overheats, the LIM automatically disconnects these yellow wires, so now if we input something from one wire, we won't get any output from it. For testing (and the actual model), if the LIM overheats, we want to cut off the power supply to the LIM. Here's my design to achieve this:
We would need to use something called a DC contactor. When a constant power (12 V in this picture) is supplied to a contactor, it connects inputs to output. When no power is supplied, the contactor disconnects the input and output. So, if the LIM overheats and disconnects the yellow wires, this will prevent the contactor from receiving power, and it will disconnect the battery pack and the VFD.
To do: Understand contactors, how they work, and find one that works for our application. Should be able to handle 325V and 30 A of current.