"Motor Overcurrent" error, maybe solved

[zr1rob]

it's only maybe solved because this solution isn't proved long term, but it did solve the problem of 'motor overcurrent' error popping up on the HC2 and shutting down the loco, till power reset.

Only one loco with this error: the electric G scale Accucraft GS4 has a huge Pittman motor, but it only draws ~1.5A when running normally. However, the current spike during initial movement was too much and thus the error. Put an "Inrush Current Limiter" inline with a motor lead, as well as raising the 'starting speed' for the loco solved the problem to the point the loco can be used regularly without errors. I used an Ametherm SL32 10015 Current Limiter Inrush 10 Ohm 15a. BTW: this loco is battery powered.

[gregeusa]

The Pittman motors used in Accucraft are technically servo motors, used for rapid movement.

To generate quick and low rpm torque they draw big spikes of current from stopped.

Your solution is the right one, although I'll bet even a 5 or even 1 ohm resistor would have done the trick. You might have issues pulling heavy trains and the 10 ohm resistor "eats" too much of your voltage (voltage = rpm in an electric motor)