| 摘要 |
An acknowledging arrangement comprising a charging circuit associated with each input signal, a warning actuating and acknowledging circuit means, and a secondary discharge circuit associated with each input signal except the least restrictive. Each charging circuit is controlled in response to the reception of the associated input signal to store a predetermined amount of operating energy. When a more restrictive signal is received, this stored energy is discharged to actuate a warning indicator. A time delay arrangement included in the actuating circuit delays the warning for a preset time to eliminate momentary false restrictive signals. A single relay is actuated to control the warning indicator for all input signals. This same relay responds to acknowledgement action by the train operator to halt the warning and restore the brake magnet valve, if other safety checks are proper. The secondary discharge circuits drain the stored energy from the activated charging circuit, when a less restrictive input signal is received, to inhibit the warning indication and the need for acknowledgement.
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