I'm troubleshooting and existing PLC5 program the documentation is weak. The line in question looks like this.
N10:10 B19:1
-------| |-----------------------------------( )--------
6 4
I have a screen shot...
Thanks, I just got off the phone with him, the second fan is part of the ventahood system and is rated for kitchen aplications. He seemed a little mad, apparently the salesman had him thinking that he was almost doubling the scfm being removed from the cooking area.
If the ID is larger than...
So I'm out visiting my dad yesterday and he is showing me his new kitchen remodel and he starts telling me about the new ventahood 1200scfm and that he is putting an inline fan that pushes 1100scfm down the line from the ventahood. My first thought is that he just limited his 1200scfm ventahood...
Just thought I'd give an update. My vendor called at 8:30 am and let me know that it was a manufacturer mistake I was suppose to get a 3 phase unit. Everything we had here in my documents and his said three phase. The unit is being shipped back and we are waiting on the delivery of a new one. I...
Thanks Waross. I've gathered from what your saying is that even if I use the nuetral from the Lighting panel feeding the UPS, when I need the UPS the most(Durring a Power outage) I will loose the nuetral, and create high voltages going to my most critical and expensive equipment.
If the ID is...
Maybe I'm clueless here but, if I'm supplying the UPS with two legs of 208 3 phase that read 208 phase to phase and 120 v phase to N/G. Shouldn't the UPS put out 2 phases that read 208 phase to phase and 120v phase to Neutral/Ground. We have not hooked anything up and the vendor is working on...
So I only threw up at least twice today. One of the projects I took on recently was getting our plant UPS systems functioning again. We had an old 3 phase 208 to 3 phase 208 UPS system that had been on bypass since 1999. Parts or repair were out of the question as the manufacturer is out of...
Depending upon distance, and number of devices, you may reap more than you can imagine. By using profibus or profinet you can utilize the bus to not only connect to your remote discrete I/O but you can hang your analog on it as well with a DP/PA coupler, thus eliminating the analog I/O needed...
UPDATE
On Monday, I tried my best to describe to the electricians what I had found. Spread sheet and all with all the ohm readings. They didn't believe me. Said the motor was hooked up properly. I did convince their boss "not me". He sent the motor for repair and the repair shop called back and...
Being that all this talks back to your dcs, why don't you set up first out fault alarms. There could be something either unrelated or very related that could be taking you out. Something could be bumping a temp, torque, vibration, limit or set point. You could have something unrelated...
I am a Profibus engineer and know very little about devicenet but I'll try. There are a number of things that could let the motors drop out. What is you devicenet bus voltage doing when the motors are dropping out? How long is the segment from the PLC to the MCC in total length? This could cause...
Thanks StarDelta ! I think you have just figured it out for me. Sometimes it really takes another set of eyes. I had never considered what would happen if it changes speeds mid stream. The brake appears to be connected correctly. What had me worried with K323 was that when I designed the push...
I've gone down and studied the contactors, the motor,.... took ohm readings all around and found that the wires going to W2 and U2 are inverted, but that is the only thing jumping out at me. All the coils are good on all seven contactors.
There is one contactor that is puzzling as to what it...
Thanks Stardelta, when the motor is using the slow speed the contactors only put 480 to the U1 V1 W1; When using the fast speed the contactors short U1, V1, W1 and apply 480 to the U2, V2, W2; Keep in mind I'm writing this from home and I am working off of memory, I could have gotten my 1's and...
Thanks for the reminders, I keep having to tell myself that even though I've asked that all these things be checked, they may not have been. I'm going in in the morning. It really pisses me off that I have to go in and chack things myself. The really bad part of this is this last motor came from...
