10
You will see the Er.S message if you have inadvertently
tripped the sensors by throwing a shadow over it while
working on the layout (on dimly lit layouts just walking by
could cause this). It takes about two minutes (on the 1/100
jumper setting) for this message to be displayed. The unit will
display normal speed for the next train whenever any of these
errors occur.
If the message Er.1 is displayed it means that both sensors
were tripped at the same time. The probable cause is turning
out or blinking the lights, disconnecting a sensor cable or a
really fast train (or finger). When this occurs the unit will
reset after about 2 seconds and normal operation will resume.
Troubleshooting
The most common problem is not ‘seeing’ the sensor at
power-up. This means that the unit did not detect the sensors
correctly. Several things may cause this. The cable could be
plugged in incorrectly (or not at all), the sensors are ‘in the
dark’ (make sure a train is not parked over the sensors), a
sensor fell out of the hole or a wire is broken. If your layout is
powered up by one switch that powers the lights as well as the
TrainSpeed power source, you may get the missing sensor
error. The unit in this case should operate normally even
though the missing sensor error occurred. If you want to
verify the sensors in this case you will need to power down
and power up the TrainSpeed board to initialize it correctly.
One common occurrence with the connector used is that only
one row of pins is covered by the connector
