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T400 Controller Facilities Manual

667/EB/20200/000 Page 19-12 Issue 9

19.4.4 Configuration Requirements

Starting Intergreen: A value of 8 seconds is required to enable the LMU to learn

the intersection

LMU Supplementary

Intergreen Extension

Time:

This should be set to 6 seconds (3 second amber and 3

second red) to give 3 second all red when Indication 1 is

active (see section 2.6.7).

LMU Max All Red Time: Set this to 11 seconds (3 second amber and 8 seconds red) to

give 8 seconds all red when Indication 3 is active (see section

2.6.8).

Allocation of Ports: The three controller inputs LMU1, LMU2 and LMU3 must

be allocated so that they do not use an input port on the

SDE/SA card, because the inputs are active low and on

power up, the SDE PCB sets all I/P signals low, thus

producing a spurious failure indication.

With all pedestrian stages, an opposing demand is required to give minimum green

termination upon second red lamp failure being detected (Indication 2). A demand

must therefore be inserted by complex conditioning to cause the stage to terminate in

the absence of opposing demands with Indication 2 becoming active.

Care must also be taken to ensure that any pedestrian demands introduced as a result

of Indication 2 being detected are conditioned such that they do not allow any other

Phase maximum to be started unnecessarily.

Red Lamp Monitoring is specified in MCK 1061 and MCK 1057 (these amend MCE

0141) as being required when an exclusive pedestrian stage is provided with audible or

tactile indicators. If it is requested to have red lamp monitoring with parallel

pedestrians then the following method of working has been agreed:

There must be no conflicting vehicle movement with the pedestrians, and all red

signals protecting the pedestrian must be monitored. Also in this case Tactile

Indicators must be used NOT Audibles.

At the time of configuration, it is possible to set the controller fault log, by

conditioning, when any of the LMU inputs are active.

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Siemens EH.75M.11. Especificaciones Pagina 205