889-3809-02
Model 2018E Operations Manual Rev Apr 2020 Page
10
of 39
indication is ignored. If the no indication timer reaches 300 milliseconds the dual indication timer, the single
indication timer, and the no indication timer are reset to zero and the dual indication is ignored. The normal
voltage thresholds for this test are: Reds – ON when above 70V
RMS
and OFF when below 50V
RMS
, Greens and
Yellows – ON when above 25V
RMS
and OFF when below 15V
RMS
.
Fault Action:
The monitor transfers the Output relay contacts to the fault condition, activates the Stop Time
output, and illuminates the
MULT IND
indicator on the front panel. The Signal Sequence log and the Prior Faults
log will record this fault.
Resetting the Fault:
The monitor remains in this fault condition until the unit is reset by the activation of the front
panel reset pushbutton or the activation of the reset input. Power loss or power interruption will not reset this fault.
The Reset log will record the resetting of this fault.
Modifying Inputs:
Red Enable
: All dual indication testing will be disabled when this input is below 50V
RMS
and enabled
when this input is above 70V
RMS
. NOTE: The disable function will be overridden when the Multi
Indication & Short Yellow jumper is installed.
MC Coil (Relay Output, Side 2)
: All dual indication testing will be disabled when this input is below
50V
RMS
and enabled when this input is above 70V
RMS
. NOTE: The disable function will be
overridden when the Multi Indication & Short Yellow jumper is installed.
Feature Interactions:
Yellow Disable Jumpers
: When Yellow Disable is jumpered for a channel that Yellow is removed
from dual indication testing for that channel. If the Yellow is a child of a Flashing Yellow Arrow
channel, the Yellow will still be used in the parent channel’s dual indication test regardless of the
Yellow Disable jumper setting of the child channel.
Flashing Greens (also known as Canadian Fast Flash)
: When Flashing Greens are enabled the no
indication timer thresholds for the Green + Red and Green + Yellow fault conditions are changed from
300 milliseconds to 100 milliseconds.
Flashing Yellow Arrow Left Turns
: When Flashing Yellow Arrow (FYA) Left Turns are enabled and a
Channel has an FYA setting with a green border for one of its child channels (child channel is
permissive with the parent channel), then the Green of the child channel will be included in the dual
indication test for that channel. If a Channel has an FYA setting with a yellow border for one of its
child channels, then the Yellow of the child channel will be included in the dual indication test for that
channel. This will effectively add the following dual indication tests: Red + FYA, FYA,
and Green + FYA. Also the timing thresholds are different for dual indications involving an FYA.
The dual indication timer threshold is 1500 milliseconds, single indication timer threshold is 1000
milliseconds, and the no indication timer threshold is 300 milliseconds. The Dual Enable setting of
the parent channel determines if the FYA display is tested. The Dual Enable setting for the permissive
child only affects the non-FYA displays of that channel.
LED Thresholds
: When LED Thresholds is enabled the monitor senses Greens, Yellows, and Reds as
ON when their voltage is above 25V
RMS
and OFF when below 15V
RMS
for the dual indication test.
Multi Indication & Short Yellow Monitoring Jumper
: When the Multi Indication & Short Yellow
jumper is installed the monitor performs the Dual Indication testing regardless of the state of the Red
Enable or MC Coil input.
2.5.4
SHORT YELLOW MONITORING
Configuration:
Yellow Disable jumpers on the program card disable short Yellow monitoring for a channel.
Typically, pedestrian channels will have Yellow Disable jumpers installed. The testing defaults for this feature are
determined by the jumpers installed on the program card. Typically, no jumpers are installed during automated
testing.
Test Preformed:
When a channel has a Green that turns off, a Yellow must follow it and it must stay on for at
least 2.7 seconds. When each Green turns off a 2.7 second timer is started. A Yellow must start within 1.5
seconds of the Green turning off. If the Red turns on before the Yellow, a short Yellow fault will be generated to
show that the Yellow was skipped. When a Yellow turns on for at least 100 milliseconds another 2.7 second timer
is started and must reach zero before the yellow turns off or a short Yellow fault will be generated. The normal
voltage thresholds for this test are: Reds – ON when above 70V
RMS
and OFF when below 50V
RMS
, Greens and
Yellows – ON when above 25V
RMS
and OFF when below 15V
RMS
.
Fault Action:
The monitor transfers the Output relay contacts to the fault condition, activates the Stop Time
output, and illuminates the
YELLOW
indicator on the front panel. The Signal Sequence log and the Prior Faults
log will record this fault.