Installing a frequency converter

[Tee]

I purchased a frequency converter and now I'm installing it in my M3. I was wondering if you guys knew where to connect it inside the Hammond. I've tried to follow the instructions but wont get the Run motor running. </p>



1. I unfastened the run motor wires from their terminal (middle and rightmost) and connected to SWC-60 output. (One pair of the motor wires into one wire from the SWC-60, the other pair to the other wire)
2. I connected SWC-60 input to those same terminals (middle and rightmost).

What happens is that I turn on the Start motor (no trouble there) and then swich on the Run motor but it doesn't run.
The organ is getting electricity, the tubes have lights but the motor wont run.
Can you figure out what I'm doing wrong?</p>

</p>

Kalli
</p>

[fredy2]

Re: Installing a frequency converter



Assuming you kept the original motor pairs together when connecting the unit, there are a couple of possibilities. If the pairs were mixed, this would cause it to not operate.</P>


One is that one of the wires is not contacting the connector. The pix I found of an SWC-60 shows Weidmuller connector strips and it is easy to have a bad connection at these.</P>


The unit has a fuse, so make sure that hasn't blown.</P>


You need to use a voltmeter to see if power is getting to the input of the convertor and out of it. If not, a fuse in the organ may have blown. I am not sure if the SWC-60 has inrush current protection and that could cause a fuse upstream to blow.</P>
<P mce_keep="true"></P>
<P mce_keep="true"></P>

[Tee]

Re: Installing a frequency converter



Hi Fred, thank you for the reply.

</p>

The pairs from the motor were kept together.
</p>

The unit ,SWC-60, works per se, it lights up when powered.</p>

We (I'm just a musician, I have a technician with me) have a voltmeter and everything is working as it should.</p>

My concern was if I was wiring the unit to the wrong places.</p>

After I removed the Run motor wires from the terminal and connected them to the SWC-60, is the Run motor still getting it's juice from the Start motor? Because when I turn on the Start motor and then switch on the Run motor..the Run motor doesn't react. </p>

Very mysterious..</p>

[fredy2]

Re: Installing a frequency converter



Check the voltage at the input to the SWC-60... If it is OK then check the output... It sounds like you connected it correctly... it is possible that the unit is defective. </P>


The picture I saw of the unit shows a board with connectors and electronic parts. There is a fuse on the board of the SWC-60.</P>


It may be that your unit is boxed... Checking the voltageOUT of the SWC-60 is important.</P>


Once the run is engaged it should lock in synchronously to the SWC-60. </P>


The run motor does not get power from the starting motor... it gets it via the SWC-60. The start motor is merely to get the generator spinning near syncronous speed so run motor can lock in. A plain synchronus motor can't start by itself</P>

[Model E & Me]

Re: Installing a frequency converter



If I understand your post correctly, you connected the Run motor to the frequency converter, but not the Start motor. In that case, the Start motor will not bring the generator up to the correct speed for the Run motor to synchronize. Both motors must be connected to a source of the same frequency.</P>


For example, on a 60 Hz tone generator, synchronous speed is 1200 RPM. But if the Start motor is connected to a 50 Hz source, it will only bring the tone generator up to 1000 RPM and the Run motor connected to the converter will not synchronize with the 200 RPM difference.</P>

[Tee]

Re: Installing a frequency converter



Problem solved. After hours of trial and error we realized we were mixing the input and the output of the unit. So after we soldered everything up again, she was up and running. My engineer even added this gadget button that makes it possible to start up at 50 Hz so that she sounds darker and deeper. I shall call her Nina.I will be playing her live for the first time tomorrow on a big concert with a gospel choir and many of Iceland's greatest singers.</p>

My next problem to tackle is that the perc doesn't decay. It just lives on. Could that be a tube issue? I will surf the net...
</p>

Thanks Fred for your help.</p>

[fredy2]

Re: Installing a frequency converter



I hope he used a good high voltage switch for that gadget button since with two separate, non-synchronized power sources at the switch, the voltage between the contacts, with transients, could probably reach 600 volts easily and a sustained arc could wipe out your convertor...</P>


Frankly I would not change the state of such a switch while the power is on... Hint from an electrical engineer who has seen such problems...</P>


I would expect the decay thing is either a tube or a capacitor problem or the kill switch for precussion...or maybe loose cable or wire in the circuit.</P>

[Tee]

Re: Installing a frequency converter



Hi Fred.</p>

Thanks again for the concerns! I believe it's a good switch since it was expensive and sold to him by an electric shop owner that knew what it was for. My engineer also is a switch enthusiastic (really!!) and warned me not to switch between Hz's with the power on. But I will tell him your concerns and ask him if this is a high voltage switch. </p>

And thanks for the perc advice. I guess I will change the tubes today and if that doesn't do it I will have to continue tomorrow. </p>

Now I'm going to a sound check with the organ and there she must rest until tonight when the concert begins. </p>

Thanks,</p>

Kalli
</p>