USA trains motor frequency?

[schienenkönig]

Hi out there, does anyone know the motor frequency of USA trains motors? I'm just try to programm my Düsseldorf tram with a massoth emotoin XL decoder.
Thanks in advance

Peter

 

[Greg Elmassian]

You mean the optimum PWM frequency from the decoder?

As high as possible

Greg

 

[PhilP]

Hello Peter,

Leave it at the default value of '0' (16kHz).

PhilP.

 

[Greg Elmassian]

I'm speculating here, but will stand by until I hear more... (hint BEMF issues)...

Greg

 

[schienenkönig]

That had been a quick response.
PhilP : That was the answer I'm after. Thank you.

Peter

 

[schienenkönig]

You mean the optimum PWM frequency from the decoder?

As high as possible

Greg

Sorry Greg, but I'm a looser in that things. What does it mean, please.

 

[Greg Elmassian]

So, except for some really weird motors, normally you want the PWM frquency as high (highest frequency) as possible.

Normally this is around 16kHZ as Phil stated.... Old open frame motors sometimes require lower frequencies.

USA Trains motors are well known, I have quite a few, and have always used the highest PWM frequency, which normally reduces motor heating and other issues.

Also, the lower frequencies will be in the audio spectrum, so you will hear more noise from the motor itself.

There's a relatively complete explanation for you.

Are you having issues with motor control, or BEMF, or just checking to be sure? This is a rare question nowadays.

Greg