13-11-2013, 04:19 PM
Hi,
Thanks Lawrence; yes I stated I've seen this problem mentioned a few times on forums without a solution being found. Once again I've just sent an email to the eBay seller requesting help to resolve the problem but the last time I emailed I wasn't afforded the courtesy of a reply so I'm not holding my breath?
In between flying around today I popped into the garage to check the parameters and all were as should be so I experimented a bit and what a delight I've now got the top speed I want on the Graduate; this is adjusted in PD005; I had this set at 60 so increased the setting to 90 and this raises the speed from 2250 rpm up to 3042 rpm so at least I've solved one of the problems.
I've just double checked the "jumper" is in the V1 position which it is.
There is a +5VDC feed and I wonder what would happen if I used this instead of the 10VDC feed I'm now using? Reading the manual it states the jumper needs connecting across pins 1 & 2 (VR) in order to use an external potentiometer or power supply? Would decreasing the voltage across the pot track increase the pot sweep? It's possible?
The new 10K wire wound pots arrived today from Rapid and are much heavier duty than the carbon pots I previously bought; tomorrow I'll connect one of these pots to the VFD using a very short cable so at least this will eliminate any interference? I'm using good quality 7 core trailer cable for the remote controls would this make any difference?
I'm never bored due to things going right all the time.
Kind regards, Col.
Thanks Lawrence; yes I stated I've seen this problem mentioned a few times on forums without a solution being found. Once again I've just sent an email to the eBay seller requesting help to resolve the problem but the last time I emailed I wasn't afforded the courtesy of a reply so I'm not holding my breath?
In between flying around today I popped into the garage to check the parameters and all were as should be so I experimented a bit and what a delight I've now got the top speed I want on the Graduate; this is adjusted in PD005; I had this set at 60 so increased the setting to 90 and this raises the speed from 2250 rpm up to 3042 rpm so at least I've solved one of the problems.
I've just double checked the "jumper" is in the V1 position which it is.
There is a +5VDC feed and I wonder what would happen if I used this instead of the 10VDC feed I'm now using? Reading the manual it states the jumper needs connecting across pins 1 & 2 (VR) in order to use an external potentiometer or power supply? Would decreasing the voltage across the pot track increase the pot sweep? It's possible?
The new 10K wire wound pots arrived today from Rapid and are much heavier duty than the carbon pots I previously bought; tomorrow I'll connect one of these pots to the VFD using a very short cable so at least this will eliminate any interference? I'm using good quality 7 core trailer cable for the remote controls would this make any difference?
I'm never bored due to things going right all the time.
Kind regards, Col.
Happiness is a wreck of a cabinet to restore.
