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Questions and Answers
What braking systems are activated during the Full Service Brake (FSB) application?
What braking systems are activated during the Full Service Brake (FSB) application?
- Dynamic Brake and Friction Brake only
- Dynamic Brake and Track Brake only
- Friction Brake and Track Brake only
- Dynamic Brake, Friction Brake, and Track Brake (correct)
At what deceleration rate does the Full Service Brake (FSB) operate?
At what deceleration rate does the Full Service Brake (FSB) operate?
- 3.0 mphps (correct)
- 5.0 mphps
- 2.0 mphps
- 4.0 mphps
Which braking system is specifically designed for engagement down to less than 2 mph?
Which braking system is specifically designed for engagement down to less than 2 mph?
- Friction Brake
- Track Brake (correct)
- Sand Brake
- Dynamic Brake
What distinguishes the Full Service Track Brake (FST) from the Full Service Brake (FSB)?
What distinguishes the Full Service Track Brake (FST) from the Full Service Brake (FSB)?
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Under which Master Controller position is sand application triggered?
Under which Master Controller position is sand application triggered?
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Study Notes
Master Controller Braking Applications
- The Master Controller controls six different braking applications: Minimum Brake (MNB), Safe Brake (SB), Full Service Brake (FSB), Full Service Track Brake (FST), Maximum Brake (MXB), and Emergency Brake.
- Minimum Brake (MNB) activates dynamic and friction brakes.
- Safe Brake (SB) activates dynamic and friction brakes, along with the sand brake.
- Full Service Brake (FSB) activates dynamic, friction, and sand brakes.
- Full Service Track Brake (FST) activates dynamic, friction, track, and sand brakes.
- Maximum Brake (MXB) activates all braking systems: dynamic, friction, track, and sand brakes.
- Emergency Brake (Push Button) activates all braking systems: dynamic, friction, track and sand brakes.
Brake Modes
- Full Service Brake (FSB) uses both dynamic and friction brakes, and engages spin/slide control. Sanding only occurs if a slide condition is detected by the Electronic Control Unit (ECU). Deceleration rate is 3.0 mphps.
- Full Service Brake with Track Brake (FST) also uses dynamic and friction brakes, but includes the track brake. The track brake remains engaged down to the no-motion threshold (less than 2 mph). Deceleration rate increases to 4.0 mphps with the track brake engaged.
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