889-3809-00
Model 2018 Operations Manual Rev Apr 2020 Page
7
of 41
Power Failure lasting between 400 and 450 milliseconds may or may not cause the monitor to enter
the power failure state.
2.4.3
RESET
Activation of the front panel manual reset switch or the Reset input causes the Form C Output relay contacts to
transfer to the no fault condition. The monitor remains in the no fault condition only if no existing faults and all
input voltages are at the proper operating levels.
Each activation of the front panel manual reset switch or the Reset input causes a one-time reset input to the
monitor. A continuously activated front panel reset or Reset input will not prevent the monitor from monitoring
any fault conditions and/or transferring the Output relay contacts to the fault condition. The front panel reset or
Reset input must be removed and reapplied to activate a new reset input to the monitor. Activation of either reset
will cause all of the front panel LEDs to turn on for 300 milliseconds.
The only intended purpose of the reset input is to facilitate automated testing of the monitor.
2.4.4
COM PORT
The monitor has a front panel mounted DB-9, RS-232 communications port that can be used with Reno A&E’s
RaeComM software to view / modify configuration settings, view current status and voltages, view logs, and
download firmware upgrades. The COM port supports the standard baud rates from 300 to 57600 with one or two
stop bits and parity of odd, even, or none. The factory default is 57600, no parity, and one stop bit. The most
current version of the RaeComM software can be found on the Reno A&E web site www.editraffic.com/under
support / monitor support / software. Also see Application Note AN-002 for an introduction to the RaeComM
software. This application note can be found on the web site under support / monitor support / application notes.
The monitor was designed to use a standard DB-9 extension cable (male to female, straight through) for connecting
to a laptop or computer. This port does not support handshaking signals. See Section
3.4
for connector pin
assignments.
2.4.5
TEMPERATURE SENSOR
The monitor is capable of measuring the temperature inside of the cabinet. The temperature sensor is capable of
measuring temperatures in the range of -40
°
F to +214
°
F (-40
°
C to +101
°
C). The internal cabinet temperature is
included in the data logged into the Prior Faults Log when a fault occurs. If the actual temperature inside the
cabinet is below -40
°
F (-40
°
C) at the time the fault occurs, the temperature is logged as -40
°
F (-40
°
C). If the
actual temperature inside the cabinet is above +214
°
F (+101
°
C) at the time the fault occurs, the temperature is
logged as +214
°
F (+101
°
C).
2.4.6
REAL TIME CLOCK
The monitor has a Real Time Clock (RTC) that is used as a reference for all date and time stamped events that are
logged by the monitor. The Real Time Clock is initialized to local Pacific Standard Time when the unit is
undergoing final test. In addition, the Daylight Saving Time user option is set to Off.
The Real Time Clock is preprogrammed to recognize Leap Years and Daylight Saving Time events through the
year 2099. Currently, per U.S. Federal standards, Daylight Saving Time is observed in the United States from 2:00
A.M. on the second Sunday in March until 2:00 A.M. on the first Sunday in November.
The Real Time Clock setting can be modified through the use of the RaeComM software supplied with the
monitor. This information is input into the Real Time Clock via the COMM PORT serial connector on the front of
the monitor. Some controller manufacturers support our communications protocol and can synchronize the
monitor to the controller’s clock through a serial cable between the controller ant the monitor.
If there is no connection made to the monitor via the COMM PORT connector, the date / time information stored
in the internal Real Time Clock is used.
2.4.7
UP TIME ACCUMULATOR
The monitor has an Up Time Accumulator that keeps track of the total amount of time that the monitor has been
powered up since it was manufactured. It is saved in the format of Years, Months, Days, Hours, Minutes, and
Seconds. The monitor warranty coverage is valid for a total accumulated Monitor Up Time of two (2) years.
Tracking and recording the total time that the unit was in service provides an accurate means of validating any
potential warranty claims.
2.4.8
CONFIGURATION MONITORING (BEEPING MONITOR)
The monitor checks all configuration settings for changes once each second. If a change is found, an audible
buzzer will start beeping (if not disabled), the
PC AJAR
indicator will flash at a 1 Hz rate, and the monitor will
transfer to the fault state to indicate that a configuration setting has changed. If the change is undone, the beeping
will stop and the monitor must be reset to resume normal operations. No configuration changes are implemented
