| GENERAL NOTES | |||||||||||||||
| GENERAL OPERATION | |||||||||||||||
| · This controller will operate the intersection with no green output to Goulburn Valley Highway, AØ. | |||||||||||||||
| · AØ green will only be shown inside the controller. | |||||||||||||||
| · Goulburn Valley Highway red is displayed by TWO alternating red displays driven from a flasher. | |||||||||||||||
| · Ambulance Phase (BØ) can be demanded by either northbound button (Detector 1) or southbound button (Detector 2). | |||||||||||||||
| · When ambulance phase (BØ) is demanded, AØ will be shut down provided its minimum green has expired. | |||||||||||||||
| · There is no display for BØ (Ambulance phase) except inside the controller. | |||||||||||||||
| · BØ has a minimum green period and an extension green period. | |||||||||||||||
| · If cancelling button (Detector 3) is not activated during BØ, allow BØ to extend to maximum before termination. | |||||||||||||||
| · BØ can be terminated at any time during its extension period if delay timer for Detector 3 expires. | |||||||||||||||
| · Set MSS1 when BØ is first demanded. MSS1 is set for the whole duration of BØ. | |||||||||||||||
| · This controller will start-up in AØ and will not place any start-up demand for BØ. | |||||||||||||||
| Note: | Northbound button, southbound button and cancelling button are located within the Ambulance Station. | ||||||||||||||
| DETECTOR OPERATION | |||||||||||||||
| Detector 1 (northbound button): | |||||||||||||||
| · When activated (Off to On state), starts Timer 1. | |||||||||||||||
| Timer 1 (Special Purpose Timesetting No. 9) expires, place a demand for BØ. | |||||||||||||||
| · If this detector is stuck in On state, do not place further demand for BØ. | |||||||||||||||
| Detector 2 (southbound button): | |||||||||||||||
| · When activated (Off to On state), Starts Timer 2. | |||||||||||||||
| Timer 2 (Special Purpose Timesetting No. 10) expires, place a demand for BØ and set MSS2 for the duration as shown in Special Purpose Timesetting No. 22. | |||||||||||||||
| · If this detector is stuck in On state, do not place further demand for BØ and do not set MSS2. | |||||||||||||||
| Detector 3 (cancelling button): | |||||||||||||||
| · When activated (Off to On state), start Timer 3 (Special Purpose Timesetting No. 11). | |||||||||||||||
| Timer 3 expires, terminate BØ extension green. | |||||||||||||||
| · If this detector is stuck in On state, do not terminate BØ extension green. | |||||||||||||||