Distech Controls HS-THX Installation Manual page 6

10. Alarm 2 Hysteresis
Alarm 1 Assignment
Temp Hi or Low
RH High or Low
<MENU> Press to save and advance.
11. Alarm 2 Delay
<MENU> Press to save and advance.
12. Out Type
<MENU> Press to save and advance.
13. Display Information
<MENU> Press to save and advance.
14. Backlight
<MENU> Press to save and advance.
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The Alarm2 hysteresis depends on the Alarm2 assignment set previously as shown in the table. Use <UP> or
<DOWN> to change the setting within the limits. Note that a high alarm resets when the measurement goes below
(setpoint - hysteresis) and a low alarm resets when the measurement goes above (setpoint + hysteresis).
Default Hysteresis
2°C / 4°F
10 %RH
The Alarm2 Delay default is 15 seconds. This is the delay time after alarm conditions are met before an actual alarm
is set. This can be used to prevent false alarms. Use <UP> or <DOWN> to change the setting from 0 to 255 seconds.
Only if Output is Voltage
The default analog output type is 0-5 Vdc. Use <UP> or <DOWN> to change to 0-10 Vdc if required. Use caution that
the selected output signal type matches the controller analog input.
Use <UP> or <DOWN> to set the LCD display information to All, RH, Temp, RH-Temp, or None. All means RH/T.
None means no measurements are normally displayed but the start-up mode and menus are still displayed. The
factory default is All.
Use <UP> or <DOWN> to set the LCD backlight to On, Off or Auto. When On the LCD backlight is always on, when
Off it never lights and if set to Auto it lights for a time period (30 seconds) whenever a key is pressed. Even if set to
Off, the backlight will light during the start-up mode. In Auto mode, the backlight will remain lit whenever a menu ssis
open. The factory default is Auto.
Hysteresis Range
1 to 5°C / 2 to 10°F
5 to 20 %RH
Resolution
1°
1 %RH