Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 269)

T400 Controller Facilities Manual

667/EB/20200/000 Page 23-1 Issue 9

23. MOVA (MICROPROCESSOR OPTIMISED VEHICLE ACTUATION)

At present, MOVA is implemented in separate units which monitor the movement of

vehicles through an intersection via their own independent loops and then adjust the

operation of the controller to optimise traffic flow.

These units are interfaced to the controller via the controllers UTC interface which

allows the units to influence the controller.

23.1 INSTRUCTIONS FOR CONNECTING MOVA TO TRAFFIC CONTROLLERS

1. Stage Green confirms and, where required, phase green confirms will be open

circuit during green. They will be short circuit at other times except as detailed

in item 3.

2. Ready to control bit will be short circuit during normal operation, except as

detailed in item 3, and open circuit when manual control is operational.

3. Stage green confirm 1 and 2 and ready to control bits will all be open circuit

during the following conditions:

a) Manual Control

b) Selected Fixed time if available

c) Selected VA time if available

d) Signals switched off (manually or fault log)

e) Lamp Supply fuse blown

Note: On older controllers, the ready to control bit need not be open circuit

for all these conditions as long as the double green is output.

4. Force bits closed contact provides the force signal. The force may be either

demand dependent or not, depending on customer request. If the force is

demand dependent, then DX bit closed contact must insert an unlatched

demand for that stage whilst the force bit is present. This then ensures that

when the forces disappear the controller will work correctly to street demands

only and not be affected by the state of the DX bit. Note: if there are no

demand dependent forces, then DX will not be set.

5. Common detectors including Push Buttons - none of these will be driven from

the controller ports using conditioning.

The output of the detector/pushbutton can be wired directly both to the controller

input and the MOVA input. Usually the detector will be configured as open circuit

equal to vehicle present.

Normally, these wires/signals to and from the MOVA unit will be listed in the spec. to

wire to the individual points of the controller, i.e. UTC interface blocks, the detector

input terminal blocks, the pushbutton terminal blocks etc.

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Siemens EH.75M.11. Especificaciones Pagina 269