
Page 15 of 19
BLOCKsignalling
www.blocksignalling.co.uk
Troubleshooting
Q. The locomotive does not move when the module is first switched on.
A. The locomotive should be moving forwards within 10 seconds. If not, increase the
SPEED adjustment on the module clockwise. Gently nudge the loco forwards in
case mechanical or electrical resistance is preventing it moving. If required, test the
locomotive in the same position with your DC controller to check it operates
correctly.
Q. The locomotive runs in the wrong direction when the module is first
switched on.
A. The locomotive motor may be wired incorrectly or the connections between the
module and the track wired incorrectly (reversed).
Q. At the end of the track the locomotive stops briefly, and then continues in
the same direction rather than changing direction.
A. When the train reaches the end of the track connected to the REV2 terminal, it will
stop then reverse. When the train reaches the end of the track connected to REV1,
it will stop then leave the section in the forward direction. Check the connection from
the track ends to the module to check they are correctly wired.
Another common cause of a loco stopping at the end and then continuing in the
forward direction is if the connections to rails have high resistance. Check closely
the connection quality at the attachment to the COMMON rail and to the EAST and
WEST connections.
Q. The train does not stop at a section.
A. The gap in the rail could be blocked by swarf or debris, or the deceleration time
could be set to too long. This is also possible if the REV1 and REV2 ends are
incorrect (reversed).
Another common cause of the locomotive not being slowed by the module is a poor
connection to the rail (poor solder joint or dirty connection).