Skip to main content

I have a special run version of the 2231130 (2231670) and it has started running 18 inches and stops with the single flash cab light.  this is supposed to mean a drive motor overload, but I can't find anything.  I have turned the flywheel by hand and don't feel any drag or extra friction as it rotates.  since I don't know what current is being sensed, I disconnected one of the smoke units and it did not make any difference.  Does anyone have ideas on what could be causing this overload situation?  Thanks in advance for suggestions.

Here is the locomotive:

Here are shots of the internals:

From above - you can see where I disconnected one of the smoke units (grey connector)

IMG_1041

view from the side

IMG_1040

Attachments

Images (3)
  • mceclip0
  • IMG_1041
  • IMG_1040
Original Post

Replies sorted oldest to newest

Note, if you have low track voltage (just in a spot or entire layout/transformer not turned up) LCP2 (Lionchief Plus 2) boards WILL fault out on motor drive because they sense they may not achieve commanded RPM.

Just saying, ensure you have 18V on the track- otherwise you can get the same false sensed cab light blink motor fault!!!

Vernon, checked on my test track and several places on the main layout and all have 18 volts.

The other reason for that to happen is the flywheel sensor isn't seeing the flywheel rotations.  Look for broken wires or the flywheel toothed wheel not properly positioned between the sensor legs.

GRJ, The flywheel connectors (blue/ yellow and the five pin w/ black wires) appear to be seated well in the board.  I will remove them and check them for continuity in the morning.  Is there a specific measurement or way to tell the toothed wheel is positioned properly between the sensor legs?

Gents, thanks for the suggestions!

IMG_1041a

Attachments

Images (1)
  • IMG_1041a

The wheel should be close to the bottom of the U-shaped sensor, but it must NOT touch it when the motor armature is pressed down to take up the slack.  I shoot for 1/16" or less when I'm putting flywheels back on.  If it's not hitting the bottom, your picture looks like it's positioned correctly.

If there is no binding in the geartrain, and the motor turns freely around a complete rev of the drivers, my next test is to yank the two pin plug and connect the motor to a bench DC supply on my test rollers and see how much current the motor draws running.  Running on the rollers you shouldn't be drawing more than 300-400 milliamps at 6-8 volts.  If it's significantly more, I'd suspect the motor.  For RCMC equipped locomotives, I put the board on my tester.  I don't have a tester for the LCP2/3 boards yet, that's in the project queue, so I just take a spare board and substitute.

Add Reply

Post
This forum is sponsored by Lionel, LLC
×
×
×
×
Link copied to your clipboard.
×
×