When an alarm is first registered, it appears on the alarm display and is highlighted in
yellow. If the alarm is short term (i.e., two seconds or less), the alarm text is not
highlighted after approximately two seconds. If the alarm continues longer than two
seconds, the text remains yellow and the alarm duration is incremented. When the next
alarm occurs, the previous alarm moves down one position.
The TVM has enough memory for 200 alarms per input. When 200 different alarm
events have occurred, alarm number 200 is dropped and the most recent alarm is
tagged as 01. To overcome the 200-alarm per input limit, connect a PC to the Ethernet
port and use PC support software. All alarms are passed to the PC and saved.
Use the following NAVIGATION buttons to scroll through the alarm list:
Press to page up through the alarm list.
Press to page down through the alarm list.
Press to select the first page on the list.
Press to select the last page on the list.
To erase the current group of alarms, press and hold the ENT button for approximately
five seconds.
A GPI output dry-contact closure can be used to alert other devices when an alarm
occurs. Use the COMMUNICATIONS menu to setup the GPI.
Alarm Status Display
The Alarm Status screen lists all the alarms, the state of each alarm setting, the current
alarm limit selection (if applicable), the current alarm duration (if applicable), and the
Accumulated alarm column. An alarm status display diagram is shown in Figure 3-49
and described in Table 3-38. The diagram illustrates the general location for the
various alarm status display fields.
General Operation
TVM Series Installation and Operation Handbook
Copyright © 2008, Harris Corporation
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