Skip to main content

I noted today that MTH recommends that accessories in a DCS layout be run from a separate transformer to avoid making the DCS signal pass through coil windings or a circuit board.  However, using the ZW as an example, the accessories are typically run from a separate TAP on the transformer than the track voltage, AND the DCS signal is injected downstream to the transformer anyway (in the TIU).  So does the DCS signal backfeed through the TIU into the ZW?

Original Post

Replies sorted oldest to newest

The accessory tap on your ZW technically is a separate transformer. You shouldn't have a problem.

I'm only about 99% sure of this but no, the DCS signal should not back-feed through the transformer windings. The DCS signal comes from the output side of the TIU. Your transformer is connected on the input side of the TIU.

Last edited by Gilly@N&W

There is a DCS signal filter (aka choke)  inside the TIU so that the DCS signal on the track does not "backfeed" into the transformer at the TIU power input connections.  However, if you are using the so-called passive-mode where the transformer directly connects to the track, you should add this DCS signal filter (aka choke) between the transformer and the track.

Add Reply

Post
The DCS Forum is sponsored by

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×