Bachmann Message Board

Discussion Boards => On30 => Topic started by: palallin on September 30, 2017, 10:21:57 PM



Title: C&S #22 DC Loco on EX Command Button #10
Post by: palallin on September 30, 2017, 10:21:57 PM
The EZ Command manual says this about running a DC loco on Button #10:
"NOTE: WHEN OPERATING A DC LOCOMOTIVE ON ADDRESS "10," BE SURE TO MONITOR IT CLOSELY. SOME
DC MOTORS ARE SUBJECT TO OVERHEATING AND DAMAGE WHEN OPERATING FOR LONG PERIODS OF
TIME ON DCC SYSTEMS."

I have tried for the first time to run my C&S 2-6-0 #22 (from a very early On30 set) using 10, and it will run, fairly smoothly, BUT the motor (I guess_) makes a high-pitched buzz/hum sound that sounds almost like a whistle.

Is this sound telling me that I should not run this DC loco using the EZ Command?

Thanks for any info!


Title: Re: C&S #22 DC Loco on EX Command Button #10
Post by: dutchbuilder on October 01, 2017, 04:14:06 AM
No that is normal.
What you hear is the frequency of the dcc data stream.
That's why some motors go belly up.


Ton


Title: Re: C&S #22 DC Loco on EX Command Button #10
Post by: Hunt on October 03, 2017, 08:39:26 PM
palallin,

What you are hearing is the motor vibration resulting from using a modified AC waveform to run a motor designed to be run using DC. It does shorten the time before failure of the motor.
 
Research "DCC zero bit stretching"   


Title: Re: C&S #22 DC Loco on EX Command Button #10
Post by: palallin on October 03, 2017, 11:17:44 PM
Thanks, folks.

I think I will find a DC pack to piggyback onto the EZ Command per the instructions before running the Mogul much.


Title: Re: C&S #22 DC Loco on EX Command Button #10
Post by: Hunt on October 04, 2017, 12:08:01 AM
. . .
I think I will find a DC pack to piggyback onto the EZ Command per the instructions before running the Mogul much.


No help,  damage issue remains!

The DC power pack just gives you a separate unit to control the DC locomotive and opens up address 10 as a digital address.   The DC locomotive is still being powered by a modified AC waveform from the DCC E-Z Command Control Center not the DC voltage from the DC power pack.

 


Title: Re: C&S #22 DC Loco on EX Command Button #10
Post by: palallin on October 04, 2017, 09:34:46 PM
Oh.  Thank you for that clarification;  I apparently misunderstood the manual on that point!

I guess I need to wire a regular DC pack into the power leads using a center-off switch to alternate between the DCC and the DC.  Shucks.  I thought this would be simpler.