889-3809-02
Model 2018E Operations Manual Rev Apr 2020 Page
15
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milliseconds. When the switch is set to ON, the Special Function 1 input is sensed as active when the voltage is
less than 50V
RMS
for 550 milliseconds and off when the voltage is greater than 70V
RMS
for 550 milliseconds. The
testing default for this feature should be disabled.
Operations Modified:
Red Fail Monitoring
: When Special Function 1 Invert is enabled and the voltage on the Special
Function 1 input is less than 50V
RMS
for 550 milliseconds, red fail monitoring shall be disabled.
Typical Use
: This feature can be useful for railroad preemption interfacing. Railroad circuits are commonly
energized when not active and de-energized when active.
2.6.1.5
OPTION SWITCH 5 – SPECIAL FUNCTION 2 INVERT – SF2 INV
Configuration:
The setting of the Special Function 2 Invert Enable (Option Switch 5 – SF2 INV) DIP switch determines if this
feature is active. When the switch is OFF, the Special Function 2 input is sensed as active when the voltage is greater than 70V
RMS
for
550 milliseconds or off when the voltage is less than 50V
RMS
for 550 milliseconds. When the switch is set to ON, the Special
Function 2 input is sensed as active when the voltage is less than 50V
RMS
for 550 milliseconds and off when the voltage is greater than
70V
RMS
for 550 milliseconds. The testing default for this feature should be disabled. The
Special Func 2 Enable
user option in
RaeComM must be selected in order for Special Function 2 to function.
Operations Modified:
Red Fail Monitoring
: When Special Function 2 is enabled, Special Function 2 Invert is enabled, and the voltage on the
Special Function 2 input is less than 50V
RMS
for 550 milliseconds, red fail monitoring shall be disabled.
Typical Use
: This feature can be useful for railroad preemption interfacing. Railroad circuits are commonly energized when not
active and de-energized when active.
2.6.1.6
OPTION SWITCH 6 – GREEN / YELLOW MONITORING – GY MON
Configuration:
The setting of the Green / Yellow Monitoring (Option Switch 6 – GY MON) DIP switch
determines if this feature is active. Green – Yellow Monitoring is controlled by the Red Enable input and the Multi
Indication & Short Yellow Monitoring jumper the same as Dual Indication Monitoring. The testing default for this
feature should be disabled.
Operations Modified:
Dual Indication Monitoring
: When the Dual Enable switch is OFF for a channel and Green / Yellow
monitoring is enabled, the channel shall only be checked for the Green and the Yellow being on at the
same time (the Red is not checked). If Yellow Disable jumpers are installed for the channel, the
channel will not get Green – Yellow monitoring.
Typical Use
: This feature is often used with five-section protected/permissive left turn heads to monitor the Green
arrow and Yellow arrow to ensure that they both are not on at the same time. Often Dual Indication monitoring
cannot be enabled for the protected channel as the Red of the channel is not used and often left floating high.
2.6.1.7
OPTION SWITCH 7 – 2010 MODE - 2010
Configuration:
The setting of the 2010 Mode (Option Switch 7 - 2010) DIP switch determines if this feature is
active. The 210 mode of operation is selected when the switch is OFF. The 2010 mode of operation is selected
when the switch is ON.
Operations Modified:
Watchdog Monitoring
: In the 210 mode a fault occurs if this input does not change states within 1500
milliseconds of the last state change. In the 2010 mode a fault occurs if this input does not change
states within 1000 milliseconds of the last state change.
Red Fail Monitoring
: In the 210 mode the Red Fail monitoring function shall ignore faults of less than
700 milliseconds duration and activates on faults of more than 1000 milliseconds duration. In the
2010 mode the Red Fail monitoring function will ignore faults of less than 1200 milliseconds duration
and activate on faults of more than 1500 milliseconds duration.
Stop Timing:
In the 210 mode the Stop Timing output is released at the same time as the Fault Relay is
returned to the no fault state. In the 2010 mode the Stop Timing output is released 250 milliseconds
before the Fault Relay is returned to the no fault state.
Red Enable:
In the 210 mode a state change of the Red Enable input is recognized when it stays in a
state for at least 100 milliseconds. In the 2010 mode a state change of the Red Enable input is
recognized when it is in a state for at least 400 milliseconds.
Typical Use
: This feature is used to provide additional fault checking for Flashing Don’t Walk displays on
pedestrian channels. Without this feature a flashing Red input is never checked for conflicts.