![insert rungs gx works 2 insert rungs gx works 2](https://images-na.ssl-images-amazon.com/images/I/61O0bA0%2BA6L._SL1001_.jpg)
So when it is TRUE no logic flows and the Siren output goes FALSE and switches off. On the second rung the M1 Run output is normally Closed (NC). So, when the scan gets to the second rung the Start Command is still TRUE and the M1 Run output is also TRUE (the motor is running). If the stop inputs have NOT been triggered, the Start Command latch will still be active. So, when the PLC scan cycles back to the top and moves through the rungs. That’s not the end of the story, because the siren is still activated. The scan then jumps to the last rung and if the Start Command is TRUE then timer T1 is activated.Īfter the Start Command is TRUE for ten seconds (preset time) the T1 ON delay timer will activate the M1 Run output. Please Note – The M1 Run symbol is triggered from the third rung. If the Start Command is TRUE from the motor control latching logic on the first rung and the M1 Run output is FALSE (motor is not running) then the Siren output is activated. So now we can use the Start Command latch to trigger multiple actions.Īfter the first rung is scanned it moves to the second rung. The difference is we replace the M1 Run output with an internal variable called Start Command. The first rung works the same as the standard motor control latching logic. Works great and no worries about speed reduction or issues caused by using those cheapo caddies.Motor Control Ladder Diagram – Delay Start Warning Siren I mounted the SDD diagonally (it’s under the plastic holder) so that the SATA connectors are not on a bind.Īfter drilling the holes, I laid the bracket on a piece of wood and drove a small flathead wood screw into each hole to create the indentations for the mounting screw heads so the plate lays flat. The empty black plastic ODD holder slides on top of it and locks it in place. I made it so that it lays flat and fits snuggly on the bottom of the DVD drive bay (top of HDD cage). I suppose you could also use a piece of aluminum flashing, which could be cut with scissors, but I wanted something a little thicker. I also purchased a SATA Power Y-Splitter Cable and I already had a longer SATA data cable (both are required).Īfter removing the DVD drive, I created a mounting bracket out of a thin aluminum sheet. This blank fills the hole which was occupied by the front of the DVD drive. Since the Optiplex 7010 & 9010 SFF only allow for 1 –HDD or 2-SSD’s with OEM brackets, where can you squeeze in a SDD? Well, I never use the optical drives on any of my workstations so I removed it from my 7010 and purchased an ODD blank bezel bay filler (JDDXD 33VKR) from eBay. Those caddies are a bad workaround, not a solution and some folks have reported issues with them so I asked myself, “Why introduce another interface in between the SSD and the bus?” In fact, I did order one and then I canceled the order when I came to my senses. I considered ordering one of those crappy, aftermarket ODD caddy adapters.
![insert rungs gx works 2 insert rungs gx works 2](https://images-na.ssl-images-amazon.com/images/I/81U7k7OcPwL._SL1500_.jpg)
I realize this thread is old but it is in the top search results so I wanted to save others time by posting my over-engineered solution (requires removal of the optical drive).