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MMU2-1600GE series Operations Manual Rev Apr 2020 Page
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2.7.2
MONITOR RESET LOG
The monitor Reset Log records the 20 most recent resets. Data recorded: Date / Time Stamp, Faults at Time of
Reset, and Source of Reset (Front Panel, External, or Power Loss).
2.7.3
CONFIGURATION EVENT LOG
The Configuration Event Log records the 10 most recent configuration changes. Data recorded: Date / Time
Stamp, Programming Card Jumpers, Type Select, Factory Options set through RaeComM, and User Options set
through RaeComM.
2.7.4
PRIOR FAULTS LOG
The Prior Faults Log records the 20 most recent faults. Data recorded: Date / Time Stamp; Cabinet Temperature;
Faults Reported; Status of all Greens, Yellows, Reds, and Walks; Status of all DC Inputs; Status of Red Enable;
Entire Front Panel Fault Display; AC Line Voltage; and Red Enable Voltage.
2.7.5
AC LINE LOG
The AC Line Log records the 50 most recent changes in AC line status. Data recorded: Date / Time Stamp, Event
Type (Power Up / Reset, Low Voltage, Low Voltage Recovery, Shutdown, Low Voltage Alarm, Low Voltage
Alarm Recovery, High Voltage Alarm, and High Voltage Alarm Recovery), and AC Line Voltage.
Through RaeComM, the user can adjust the High Voltage Alarm point and the Low Voltage Alarm point. These
alarm points have a fixed, three volt hysteresis. Therefore, setting the High Voltage Alarm point to 135 volts will
cause the recovery point to be set to 132 volts. Likewise, setting the Low Voltage Alarm point to 105 volts will
cause the recovery point to be 108 volts. The factory defaults for these alarm points are 105 volts for the low alarm
point and 135 volts for the high alarm point.
NOTE: The log will only record when these points are crossed. The minimum and maximum voltages seen are
not recorded.
2.7.6
SIGNAL SEQUENCE LOG
The Signal Sequence Log records 13 most recent failures. The logs can be configured to record events occurring
prior to a fault in one of two different modes.
Event Mode
: The Signal Sequence Log records the 60 most recent events preceding the failure. An event is
defined as an instance when any AC or DC signal changes state. The monitor checks all inputs for changes in
state every 33 milliseconds for the purpose of accumulating data for this log. Data recorded: Time Prior to
Fault; Status of all Greens, Yellows, Reds, and Walks; RMS Voltages of all Greens, Yellows, Reds, and Walks;
Status of all DC inputs; Status of Red Enable; AC Line Voltage; Red Enable Voltage; and DC Input Voltages.
Time Mode
: The Signal Sequence Log records the 2 seconds preceding the failure. The monitor records all
inputs every 33 milliseconds for the purpose of accumulating data for this log. Data recorded: Time Prior to
Fault; Status of all Greens, Yellows, Reds, and Walks; RMS Voltages of all Greens, Yellows, Reds, and Walks;
Status of all DC inputs; Status of Red Enable; AC Line Voltage; Red Enable Voltage; and DC Input Voltages.
2.7.7
LOGGING OPTIONS
2.7.7.1
LOG FIELD CHANGES
When this feature is enabled the monitor will make entries in the Signal Sequence log only when an input has
changed state. All inputs (AC and DC) are checked every 33 milliseconds for a change in state. If any input
changed state, a new entry is placed in the Signal Sequence log. If this feature is disabled the monitor will make a
new entry in the Signal Sequence log every 33 milliseconds. The disabled mode is typically the most useful mode
for this feature but the Signal Sequence log can only record two seconds prior to the fault is this mode. However,
when troubleshooting Short Yellow or Short Clearance faults, it may be desirable to record a longer Signal
Sequence log. With this feature enabled the Signal Sequence log will typically record 40 to 50 seconds prior to the
fault. The factory default for this feature is disabled.
2.7.7.2
LOG LOCAL FLASH EVENTS
When this feature is enabled the monitor will record Local Flash events in the Prior Faults log. Disabling this
feature is useful when an intersection is normally put into Local Flash (time of day, etc) and you do not want to fill
up the Prior Faults log with non-fault events. The factory default for this feature is
YES
.
2.7.7.3
LOG CVM EVENTS
When this feature is enabled the monitor will record CVM events in the Prior Faults log. Disabling this feature is
useful when an intersection is normally put into flash using CVM (time of day, etc) and you do not want to fill up
the Prior Faults log with non-fault events. The factory default for this feature is
YES
.
2.8
DIAGNOSTICS
The monitor is provided with a series of resident self-check diagnostics capabilities. Diagnostic failures are
latched in the fault condition until the unit is reset by the activation of the front panel reset pushbutton or activation
of the reset input. A diagnostic failure is not reset by a monitor Power Failure.
