ST950S Plus+ Installation and Commissioning Manual
Table 32. Manual Panel LED Indicators (continued)
LED
Function
the start-up is complete, the indicator for the selected mode normally stops
flashing and remains on steady.
If ‘Normal’ mode is selected, then the controller also illuminates one of the
other mode indicators if the controller is running that mode, e.g. VA.
AWAITING COMMAND
LED
Under manual control only, this LED illuminates at the end of the minimum
green period, signifying that a new stage may be selected by the stage se
lect pushbuttons.
Selection of a stage before the LED is lit is prevented and any such selec
tion is ignored.
PROHIBITED MOVE
LED
This LED illuminates if a prohibited stage to stage movement is attempted
while under manual control. It remains illuminated until a permitted move is
made.
HURRY CALL (AUX 4)
LED
Illuminates during all modes of control when there is a hurry call being ser
viced, or can be configured for an auxiliary function.
HIGHER PRIORITY
(AUX 5) LED
Illuminates when there is a mode with a higher priority than manual mode,
such as UTC Control, or can be configured for an auxiliary function.
AUX 1 - AUX 3 LEDs
These LEDs can be configured to display auxiliary functions active such as
Dim Override.
3.18.2. 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.
Important:
Care should be taken to ensure safe traffic conditions before operating the switch.
With the OFF position selected, normal microprocessor control operations continue, and the phase
selections being implemented can be observed on the Lamp Switch indicators.
Important:
Switching the Manual Panel Signals On/Off switch to “Off” does not provide isolation of the
equipment.
When the switch is returned to the ON position, the signals turn on as per the configured switch on
sequence.
Page 76
