889-3809-00
Model 2018 Operations Manual Rev Apr 2020 Page
34
of 41
FAULT CONDITION
FIELD STATUS INDICATIONS
VDC FAILED
WDT ERROR
ON
- Field inputs that were ON for at least 33 ms at the time of the fault.
CONFLICT
ON
- Field inputs that were ON for at least 33 ms at the time of the fault.
FLASHING
- Field inputs that were ON and were the cause of the fault.
RED FAIL
ON
- Field inputs that were ON for at least 100 ms at the time of the
fault.
FLASHING
- All field inputs for the channel(s) that had no display.
MULT IND
ON
- Field inputs that were ON for at least 100 ms at the time of the
fault.
FLASHING
- Field inputs that were ON and were the cause of the fault.
YELLOW
ON
- Field inputs that were ON for at least 100 ms at the time of the
fault.
FLASHING
- The Yellow field inputs on which a Short Yellow was
detected. The Green field inputs that were not OFF for at least 2.7
seconds before a conflicting channel was detected as active.
PC AJAR
ON
- Field inputs that were ON for at least 33 ms at the time of the fault.
FLASHING
- An invalid Program Card has been inserted.
DIAG FAIL
FLASHING
- The diagnostic code for the internal fault. Channel 1 is bit
0 and Channel 16 is bit 15 of the diagnostic code in binary.
NOTE: This may be incorrectly displayed depending on the type of
failure being experienced.
4.2.2
AC POWER INDICATOR
The green
AC POWER
indicator is on continuously when the AC line voltage is above 103V
RMS
except while in
the start up mode. This indicator will flash at a 4 Hz rate while in the start up mode and waiting for the Watchdog
Timer input to become valid. When the AC line voltage is below 98V
RMS
, the indicator will flash at a 2 Hz rate to
indicate low line voltage. While the AC line voltage is low, all field status indicators will be off. Any active fault
indicators will stay on. See Section
2.4.1
for details on Monitor Power Up / Power Recovery. See Section
2.4.2
for details on Monitor Power Failure detection. See Section
2.6.3.3
for details on Low AC Power Thresholds.
4.2.3
VDC FAILED INDICATOR
The red
VDC FAILED
indicator is used to indicate that the voltage at the +24VDC input is outside of the
allowable operating range. The indicator will be on solid when the voltage on the +24VDC input is below 18V
DC
.
See Section
2.5.6
for more information.
When En24VDC Monitoring is enabled, this indicator will flash at a 5 Hz rate when the +24VDC input is
above 30V
DC
. The indicator will flash at a 1 Hz rate when the ripple on the +24VDC input exceeds 1V
RMS
. See
Section
2.6.1.3
for more information on +24VDC enhanced monitoring.
4.2.4
WDT ERROR INDICATOR
The red
WDT ERROR
indicator is used to indicate that a Watchdog fault has been detected on the Watchdog
Timer input. See Section
2.5.7
for more information on a Watchdog fault.
4.2.5
CONFLICT INDICATOR
The red
CONFLICT
indicator is used to indicate that a Conflict fault has been detected on the field inputs. See
Section
2.5.1
for more information on a Conflict fault.
4.2.6
RED FAIL INDICATOR
The red
RED FAIL
indicator is used to indicate that one or more channels of the monitor had no active field inputs
(Red, Yellow, or Green). See Section
2.5.2
for more information on a Red Fail fault.