Allen bradley 1305

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I have an allen bradley 1305 vfd that runs on a powder coat system that periodicly just shuts off. There is no alarm present and it can be restarted by simply pressing the start button. I am currently monitoring the power panel with a fluke 434 power quality analyzer to see if it is being caused by poor power. Any thoughts?
 
I have an allen bradley 1305 vfd that runs on a powder coat system that periodicly just shuts off. There is no alarm present and it can be restarted by simply pressing the start button. I am currently monitoring the power panel with a fluke 434 power quality analyzer to see if it is being caused by poor power. Any thoughts?

Sounds like the control circuit shuts it down, so from the ASD's standpoint it is a normal shutdown, hence no alarms.
 
Hi Chad,

The 1305 is a pretty robust drive for a small, older platform. If the shut-down occurs after a fairly extended run time, I would either completely check out or replace the motor. I have seen this symptom, and after the motor is replaced, everything is fine. I have also seen a motor checked at a shop in a cold condition where everything semed fine, but the motor change solved the problem.
 
Hi Chad,

The 1305 is a pretty robust drive for a small, older platform. If the shut-down occurs after a fairly extended run time, I would either completely check out or replace the motor. I have seen this symptom, and after the motor is replaced, everything is fine. I have also seen a motor checked at a shop in a cold condition where everything semed fine, but the motor change solved the problem.

No offense, but I'm questioning this. I doubt what your saying could cause this problem. If it shut's off due to a motor fault, The drive would document that. The drive is assuming all is normal. The same as if some one pushed stop. Since stop buttons are NC, there's probably a dity contact, or loose wire somewhere.
 
We just had a 1336 drive with MOD-L3(AC Controls) option board. We had 2 weeks of the run signal dropping out(usually over night). I thought it might have been power quality. I put a pure sine wave UPS on the control circuit after exhausting other testing. The issue completely went away. I bought a DC option board to use DC instead of AC for control, and I have to run over and install it. I'm guessing the voltage distortion was coming from a dozen fork lift charges which are powered from the same panel, and they charge over night. It was the same exact issue you are describing. Let us know what you find.

Steve
 
I have an allen bradley 1305 vfd that runs on a powder coat system that periodicly just shuts off. There is no alarm present and it can be restarted by simply pressing the start button. I am currently monitoring the power panel with a fluke 434 power quality analyzer to see if it is being caused by poor power. Any thoughts?

Is the control circuit in shielded cable, separately routed from the motor cable?
 
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