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#13820 - 04/04/15 11:39 AM
Re: Miprom 21
[Re: J Sand]
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Joined: Aug 2011
Posts: 563
uppo72
addict
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addict
Joined: Aug 2011
Posts: 563
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I have the same issue on a duplex. it will not pull in my intermediate relay and stop at the next floor in both directions. It is a 400 fpm geared. If I try to run inspection speed at 40 fpm (10% of contract), it only runs 20 fpm. Car was running fine 2 weeks ago. My pattern (VC to GAN) is .8, which is correct since 8 volts is full speed. At the drive, My 0.8 volts runs through ADC 1 (scaled the same as other car) and converts to digital value of 200 (should be 400). since this is a geared car, the motor is rated for 1150 rpm and should turn 115 rpm to produce 40 fpm; it only turns 57 rpm. All current/voltages/fields are correct. It tracks perfectly at 57 rpm. The encoder is a 2048 (tried a new one even). If I didnt know any better, the input of the encoder to the drive is thinking 57 rpm is correct. I doubled the encoder rate in the drive and MSU and the speed is now correct. Was going to change drive, but this car is the master and "bad things" happened. Going to try and swap main drive board Monday. Thoughts? Not sure on this equipment but I have a similar fault which was a parameter setting which was a 'factor' setting. It was set to .5 instead of 1 which halved all incoming values. I have also had a encoder flip it setting too, which it appeared to do here. Was the 2048 the right setting?
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#13838 - 04/05/15 07:05 PM
Re: Miprom 21
[Re: john jay]
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Joined: Apr 2010
Posts: 101
J Sand
Troubleshooter
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Troubleshooter
Joined: Apr 2010
Posts: 101
Los Angeles
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The speed board would not be coming in until 267 fpm?, We are "flat-topping" at 200 fpm. MSU and Drive PPR are both at 2048, now and before the problem. The encoder is mounted directly to the shaft of the armature. 150 fpm speed board is coming in correctly on AUTO. This speed difference occurs on AUTO as well as inspection speed (now at 40 fpm, or 10% of contract so I don't have to do math), so the speed boards wouldn't be a factor at that low.
Last edited by J Sand; 04/05/15 07:09 PM.
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