Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 44)

T400 Controller Facilities Manual

667/EB/20200/000 Page 4-2 Issue 9

4.3.3 Revertive Demands

When a vehicle actuated phase terminates with an extension active, a revertive latched

demand is inserted for the phase to prevent any vehicles being trapped between the

detectors and stop line without a demand for the phase.

If required, the revertive demand may be inserted for an alternative phase rather than

for the terminated phase.

In the example in Figure 21.5, the green arrow Phase C inserts a revertive demand for

its associated Phase B, and dummy Phase H for Phase F.

4.3.4 UTC Demand Bits

These provide simulated on-street demands and/or extensions from the UTC

computer. In the case of pedestrian demands, the WAIT indicator will be illuminated

on receipt of the demand unless specifically requested otherwise.

4.3.5 Conditions Occurring

Demands and/or extensions may be required to be inserted when certain conditions

occur rather than the operation of detectors. For example, a stage becoming active

inserts a demand for a following stage.

4.3.6 Repeat Pulses

When controllers are linked, demands and/or extensions may be required to be inserted

when certain conditions occur in the first controller and the pulses are repeated to the

second controller. (See section 13.2).

4.3.7 SDE/SA

This facility provides extra extensions to phases for high speed vehicles, see section 6.

4.3.8 Handset

Demands and extensions for phases may be inserted via the handset using the IOP

command.

Type in IOP 0 enter. Then pressing keys 0-7 will insert demands/extensions on port 0,

all the time the key is pressed. The ‘+’ and ‘-’ keys may be used to quickly move up

and down to other ports.

Alternatively, fixed demands and extensions for phases may be inserted and removed

via the handset using the PHD and the PHE commands.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 307 308

Sin comentarios

Siemens EH.75M.11. Especificaciones Pagina 44