CBI - SSI & Microlok Flashcards
What is red retaining
What is the purpose of the red retaining feature
If a signal TFM detects a fault in its circuits it will disable its outputs and enable red retaining.
this ensures under fault conditions that the modules replace signals back to their most restrictive state. RED
What is a DLM and what is it used for.
How many are in each location.
It is a Data Link Module. There is two in each location, duplicated for availability. They transfer the message sent by the MPM to the TFM and response back to the MPM
Can SSI modules be hot swapped
What is a PPM and how many are used in an SSI interlocking
What is an MPM and how many are used in an SSI interlocking
Are microlok card files hot swappable
NO
how many slots are in a micolok 2 card file shelf. how many cards can fit
20 slots fits 19 cards. CPU card is 2 slots
What is the purpose of the VCOR
Cuts power to vital outputs when there is a failure in safety critical diagnostics.
how do you perform a battery load test for microlok system
turn off for 5 mins. battery voltage to stay above 12V
What are the 2 SSI alarms that a signaller can get on their panel
Critical and Non critical
Critical immediately impacts train running. Non critical has no immediate effect on train running.
What information is to be uploaded before installation
The correct executive software version and correct application data for the location.
