21
Error indications
The Evo controller uses its various panel indicators to provide
assistance in tracing and solving operational problems.
Mimic indicators (for each phase)
In normal operation these displays mimic the
currently active lamps of each signal head with a
steady illumination of the appropriate lamp colour.
If a lamp fails or a green conflict is detected,
the relevant indicator(s) will flash to highlight
the location of the problem. The left three indicators of the
mimic represent the main (or only) signal head for a phase,
the right three indicators represent the second of a dual head
arrangement (if used). The
DEMAND
indicator shows when a
vehicle is detected by the microwave vehicle detector (on either
signal head).
Battery indicators (for each phase)
Note: See also page 18 for details about checking exact
charge levels.
During startup, if the voltage of any controller battery is below
11.5v, the text display will show
Low Battery
and the controller
will refuse to operate.
During operation, when there are roughly two hours of
operational time remaining within a remote signal head
battery, the battery indicator will flash and the text display
will show
Low Battery
.
When the battery becomes too low for operation, the signal
head will go to red for the
MAX RED
time and then switch off, the
battery indicator will remain on and the text display will show
Batt Fail
. The corresponding indicator on the Evo master
controller will remain on and the text display will show
Batt Fail
nn
, where
nn
is the slave number.
If two heads are used within a phase, the low battery state could
signify low power at either or both signal heads - the control
panel on each signal head will provide further details.
Comms indicator
In normal operation the
COMMS
indicator will show a
flashing green light:
Master controller
Flashing green
System running correctly.
Off
Loss of communication.
On
Fault state.
Slave controller
Flashing green
System running correctly.
Off
Loss of communication.
