PAGE 3/2
     SITE NAME COOPER STREET NR DAVISSON STREET   SITE NO. 7034
TRAM PRIORITY OPERATION
 
TRAM   Function                            
Detector No                                  
6 - Starts Timer 1 (Refer Special Purpose Timesettings Nos. 9, 13, 23 & 27)  
     
7 - When first activated resets Timer 1  
     
8 - Starts Timer 2 (Refer Special Purpose Timesettings Nos. 10, 14, 24 & 28)  
     
9 - When first activated resets Timer 2  
                                   
    Timer 1 or 2 expired OR detectors 8 or 10 'ON' constitutes a 'TRAM CALL'  
NOTES:          
1. When an advance tram detector fails (i.e. has a detector alarm) it will be ignored.      
2. When a stop line tram detector fails, both it and the associated advance detector will be ignored.    
3. If the value of a delay timer is set too high (e.g. 200 sec.) the tram will reach the stop line loop well before the
    delay timer expires, and thus phase calls from the advance detector will effectively be inhibited.    
4. Timer status can be monitored by observing the following memory locations on the operator terminal:  
         
Controller Type   Key Command       Bit Position & Timer No    
            o o o o o o o o    
Alpha 16   A.128         4 3 2 1    
PSC   A.E0128       1 2 3 4          
 
5. Tram calls are cancelled and timers reset if the timers have been expired for more than one cycle,   
    or two cycles if XSF15 is set.  
6. To monitor XSF and MSS flags on the operator terminal, key in:  
     
Controller Type   XSF MSS    
Alpha 16   A.D8 A.DA    
PSC   A.E00D8 A.E00DA  
 
     
Z Flags   Period Select Alternate Delay Times   Select Special Timer Times   Inhibit Detectors  
       
       
No Z- No Z+   L.O.P 9 - 10   11 - 12   -    
  Z- No Z+   A.M. 13 - 14   15 - 16   -  
No Z-   Z+   P.M. 23 - 24   25 - 26   -  
  Z-   Z+   H.O.P. 27 - 28   29 - 30   -  
   
7.  Tram leaving detector 7 sets MSS1.  
8.  Tram leaving detector 9 sets MSS2.  
9.  When XSF4 (Master & Flexi) is set, the pedestrian delay by trams is inhibited - Pedestrian Operation  
      notes (page 3/1) are not applicable.  
10. When XSF4 (Master & Flexi) is set, the tram detectors (Timer 1 or 2 expired or Detectors 8 or 10 on) extend
     SG1 in A, B, D and E phases the same as the vehicle detectors. The timers are reset when either the  
      associated stopline tram loop is activated or if the timers have been expired for more than one cycle.  
11. Detector alarms on detectors 7, 8, 9 & 10 set MSS15, which can be used to send a message in SCATS to
      advise Maintenance that the tram detector alarms require a "priority 1" job in RAI.  
DESIGNED BY: DARREN VAUGHAN           DATE 17/04/08
G:\TMC Opsheets\Pending\[7034.htm]Tram Notes 2