Signals On/Off Switch; Lamp Test Button; Stage Select Buttons (All Red, 1 - 7); Mode Select Buttons (Manual, Va, Fixed Time, Etc) - Siemens ST950 Handbook
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- User manual (178 pages) ,
- Handbook (125 pages) ,
- Installation method statement (14 pages)
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4.14.2 Signals On/Off Switch
The lamp supply to the phase switch cards is removed immediately OFF is selected
on the SIGNALS OFF/ON switch, extinguishing the signals.
With the OFF position selected, normal microprocessor control operations continue
and the phase selections being implemented can be observed on the Lamp Switch
indicators.
When the switch is returned to the ON position, the signals turn on in the required
switch on sequence.
4.14.3 Lamp Test Button
A button on the Manual Panel enables the indicators on the panel, including the
Cabinet Alarm Lamp, to be checked.
When the button is pressed, all LEDs on the Manual Panel should light. The lamp
test is carried out under software control, and although correct results indicate that
the processor is communicating with the Manual Panel, it does not guarantee that
no faults are present.
4.14.4 Stage Select Buttons (All Red, 1 - 7)
With Manual mode selected (Manual LED lit), the keys ALL RED, 1 - 7 select the
configured stage (or combination of stages) provided the AWAITING COMMAND
indicator is illuminated and a prohibited stage move is not requested.
4.14.5 Mode Select Buttons (Manual, VA, Fixed Time, Etc)
These keys select the required mode for the controller.
The controller can be configured so that manual mode is only available if a handset
is plugged in. An alternative configuration is such that manual mode may only be
selected following a specific handset command (see MND command).
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Copyright © Siemens plc 2020. All Rights Reserved.
Care should be taken to ensure safe traffic conditions before operating
the switch
.
Switching the Manual Panel Signals On/Off switch to "Off" does not
guarantee isolation of the equipment.
Unrestricted
7
manpreet.jeerh
ST950 ICM Handbook
Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Page
Status
Date
Document No.
Mobility is a division of Siemens Plc
62 of 154
Issued
January 2020
667/HE/45950/000
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