2010ECL-NYC SERIES SIGNAL MONITOR
OPERATIONS MANUAL
Eberle Design Inc.
Page 14
2.20.2.1.2 FLASH RATE DETECTION
When the FLASHRATE FAULT option is not disabled (see Section 4.5.7), the Signal Monitor
will monitor a flashing yellow arrow output (1,3,5,7) for a lack of flashing operation. If any of
the enabled flashing yellow arrow signals on channels 1,3,5,7 remain active for more than
the FYA Flash Rate Fault time (Section 8.2), the Signal Monitor
will enter the fault mode,
transfer the OUTPUT relay contacts to the Fault position, and display status. The Signal
Monitor will remain in the fault mode until the unit is reset by the RESET button or the
EXTERNAL RESET input.
2.20.2.1.3 RED FAIL
A Red Fail fault will occur if the solid Red Arrow AND solid Yellow Arrow AND flashing Yellow
Arrow AND solid Green Arrow all remain inactive for the Red Fail fault response time. The
fault channel status will be indicated for both channels of the pair. The Red and Yellow inputs
for channels 13, 14, 15, and 16 do not affect the Red Fail condition for the FYA channels 1,
3, 5, and 7.
2.20.2.1.4 DUAL INDICATION
A Dual Indication fault will occur if any two or more of the solid Red Arrow, solid Yellow Arrow,
flashing Yellow Arrow, or solid Green Arrow signal combinations are active simultaneously
for the Dual Indication fault response time. The fault channel status will be indicated for the
FYAC Overlap channel (1, 3, 5, 7). The fault channel status will also be indicated for the solid
Green Arrow channel (9, 10, 11, 12) IF the solid Green Arrow was active.
The SSM Switch for each 1, 3, 5, and 7 channel must be in the ON position to enable Dual
Indication Monitoring for that FYA channel pair.
2.20.2.1.5 CLEARANCE
A Clearance fault will be detected if the FYAC channel sequences from the solid Green Arrow
(13, 14, 15, 16) to the solid Red Arrow (1, 3, 5, 7) without a minimum clearance time on the
solid Yellow Arrow (13, 14, 15, 16), when SSM switch 1, 3, 5, 7 is On. The fault channel
status will be indicated for the FYAC channel (1, 3, 5, 7).
A Clearance fault will be detected if the FYAC channel sequences from the flashing Yellow
Arrow (1, 3, 5, 7) to the solid Red Arrow (1, 3, 5, 7) without a minimum clearance time on the
solid Yellow Arrow (1, 3, 5, 7), when SSM switch 1, 3, 5, 7 is On. The fault channel status will
be indicated for the FYAC channel (1, 3, 5, 7).
The SSM Switch for each channel 1, 3, 5, 7 must be in the ON position to enable Clearance
Monitoring for that FYA channel pair.
2.20.2.2 FYAC INSTALLATION
The CU must be configured such that for each FYA approach, the solid Green protected
Arrow is driven by a Ped load switch Yellow input on channels 9, 10, 11 12. The protected
Green signals will be remapped to channels 13-16 Green. The associated solid Red Arrow,
solid Yellow Arrow, and flashing Yellow Arrow (Overlap phase) must be driven by a load
switch monitored on channels 1, 3, 5, and 7 respectively. The Signal Monitor associates
channel 1 with 13, channel 3 with 14, channel 5 with 15, and channel 7 with 16 when FYA
monitoring is enabled for that respective approach.
