889-3809-00
Model 2018 Operations Manual Rev Apr 2020 Page
15
of 41
Operations Modified:
+24VDC Monitoring
: When +24VDC Enhanced Monitoring is enabled, the voltage on the +24VDC
input is also monitored for over voltage monitoring with greater than 30V
DC
being a fault, and ripple
voltage monitoring with greater than 1V
RMS
being a fault. The
VDC FAILED
indicator will flash at a
5 Hz rate when there is an over voltage fault and the indicator will flash at a 1 Hz rate when there is a
ripple fault.
Typical Use
: This feature can be useful for early detection of power supply failures before they may damage the
equipment in the cabinet.
2.6.1.4
OPTION SWITCH 4 – SPECIAL FUNCTION 1 INVERT – SF1 INV
Configuration:
The setting of the Special Function 1 Invert Enable (Option Switch 4 – SF1 INV) DIP switch
determines if this feature is active. When the switch is OFF, the Special Function 1 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 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.
