American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 37)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-32 Revision 4: 05/09/12

Metro Baseline Re-Baseline: 04/29/10

7. Circuit breakers status shall be annunciated.

O. Power/Propulsion

Normal or abnormal/emergency conditions or operations shall not result in

unsafe conditions.

The manual controller shall have a "deadman" or equivalent capability in the

manual mode.

The mode selection switch and the manual controller shall be interlocked to

assure that the manual controller's capability is locked out from the mode

selection switch in the "Automatic" or "Off" position.

A current collector/contact rail isolation device, suitable for on-board vehicle

storage shall be provided.

P. Braking

Emergency brake control shall be fail-safe to the extent that no single failure or

series of common mode or common cause failures can result in less than 75%

of emergency braking effort per train consist being available.

When the safety-critical emergency stop circuit is activated, the P-signal and

BRK signal circuits and the traction power line breaker shall be opened. The

emergency stop circuit shall ensure an irretrievable stop after an emergency

application is initiated and ensure that the train is brought to zero speed before it

can proceed in any mode of operation.

There shall be redundant methods of automatically/manually applying

emergency braking.

An emergency stop button shall be provided that when activated from any

console on a consist applies full emergency brakes. Spin/slide design shall be

such that a failure does not inhibit application of emergency brakes. Cutouts and

system bypass selections shall be provided for dynamic functions that, upon

failure or malfunction, interrupt normal train operations. When ATP is bypassed,

an external light, visible from the platform, shall be illuminated.

Where carborne ATC does not provide adequate stopping distance to fixed

objects and where unprotected manual train operations are routinely utilized, trip

stops shall be used to provide safe stopping.

Q. Auxiliary Electrical

Failures or malfunctions shall not result in unsafe operations or conditions.

Approved protection shall be provided against short circuits and overloads.

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American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 37