User manual
TVS user manual Programming the parameters
35
1. Press Program until the program you want to adjust displays, for
example Apr for program A.
2. Press
Select.
The display shows Œ0, the first item in the Program settings
menu.
3. Press Up or Down until Œ10 displays and then press Select.
The display shows the current setting.
4. Press Up or Down to adjust the setting and then press Select.
The control returns to the Program settings menu.
5. To return to the Main menu, press Back once. To return to the
Main display, press Back twice.
Programming alarm settings, parameters 11, 12, 24 to 27
The alarm settings for your TVS determine which alarm conditions are enabled, which are disabled,
and their settings. All these work together to determine how and when the alarm relay activates (in
other words, signals an alarm condition).
The alarm relay activates if an enabled alarm condition is present for longer than the minimum
duration of one minute. The one-minute minimum duration prevents alarms from occurring when
the temperature rises or drops for just a few seconds.
For example, let's say the high temperature alarm setting is 85.0 degrees Fahrenheit. If the
temperature rises to 86 degrees, but drops below 85 degrees 30 seconds later, the alarm relay does
not activate. If the temperature rises to 86 degrees and stays there for more than 1 minute, the alarm
relay activates. The alarm relay remains activated until the temperature drops below the alarm
setting.
The exception to the one-minute minimum is the power fail alarm. The power fail alarm automatically
triggers the relay on a loss of power.
When an alarm occurs, the Alarm LED switches on and the alarm message
displays. For more information about acknowledging and responding to alarms,
read
Acknowledging alarms on page 39.
Use temperature override to test your high and low temperature alarms instead
of adjusting the group set point. In temperature override mode, the alarm relay
and status LEDs both operate as if they were in a real alarm situation. For more
information, read
Using temperature override mode on page 41.
Use the Alarm settings worksheet on page 58 when programming alarms.
Apr
Œ
1
0
*
8‹0