Strukton Rolling Stock was commissioned by NedTrain to install 137 panels for
the mBfk leading carriage and 137 panels for the sBk leading carriage. Some 50
panels were installed for the A and mB intermediary carriages and 87 panels for
the AB intermediate carriage.
The panels form part of the ICM door system and are installed in the service area of the mBFk and sBk, and in the E cabinet on the balcony of the A, AB and mB. Once the panels have been installed and connected, they ensure that a three-second-alarm whistle sounds when the conductor closes the doors centrally. The doors then close. The panels are supplied ex factory with a pre-assembled bundle. This bundle can be connected to the short end wall or partition in the carriage, where it only needs to be attached to the right clamps.
There are a total of five variations. The primary relay panels in the leading
carriages of all mBfk trains send the necessary signals to the other carriages
through the train's cabling. A sub panel is located in the other carriages to ensure that the dispatch whistle on the correct side of the train is activated. Because the
panels are installed within the safety system of the door system, quality must be
given special attention. In practice, this means that each and every one of the
panels must be checked completely.
Download project sheet Dispatch whistle Relay panels for ICM door system.