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XT-70 Control Panel 30
HMI MISCELLANEOUS:
CAVITY DIFF: the cavity differential is a + /- variable and is programmable by pressing the button. The cavity
differential will help determine when the cavity heat will turn on and turn off. Typically, the pile 2 sensor is the
controlling sensor and is located on top of the pile. Pile 8 would normally be the controlling cavity sensor. The XT
panel allows setup for different controlling sensors. The example below explains how the cavity works.
Turn on: If P8 < P2 + cavity diff
Turn off: if P8 > P2 + cavity diff + 1.5
CO
2
ALARM: The XT panel will alarm when the CO
2
level rises above this value for longer than the associated
timer. This value is programmable by pressing the button.
HUMIDITY ALARM: This value is programmable by pressing the button. The XT panel will alarm when the ple-
num humidity drops below this value for longer than the associated timer.
Both the CO
2
ALARM and the HUMIDITY ALARM have an associated timer. The two alarms can be set to soft,
hard or off. If either alarm is set to off, the alarm is inactive. A soft alarm will alarm and show up as a secondary
mode but will not interrupt the normal operation. A hard alarm will show up as a secondary mode and shut the
panel down in Alarm Standby. Setting either timer to 0 will turn the alarm off. Setting the associated timer to a
negative time will set it for a soft alarm and setting the associated timer to a positive time will set it for a hard
alarm. All timers are set in the E2 parameter screen, accessed using the middle left outside button.
5.11
45.5 45.5
CO2 ALARM HUMIDITY ALARM
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