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XT-70 Control Panel 43
E2 Parameters Definition:
to start, the system will go into a Cell Pump Fail Alarm after this amount of time
elapses. The default setting is 0, which will disable the Cell Fail Alarm.
A typical setting would be 1 minute.
PLEN_SEN_FAIL: Plenum Sensor Fail Timer. If the plenum sensor were to short, open, or have
the sensor difference exceed the PLEN_SEN_DIFF setting, this timer would
have to time out before the Plenum Sensor Fail Alarm would be active.
The default setting is 3 minutes and a 0 setting will disable the alarm.
OSA_TEMP_FAIL: Outside Air Sensor Fail Timer. If the outside air sensor were to short or go
open, this timer would have to time out before the Outside Sensor Fail Alarm
would be active. The default setting is 3 minutes and a 0 setting will disable
the alarm.
OSA_HUMID_FAIL: Outside Air Humidity Sensor Fail Timer. If the outside humidity sensor were to
fail, this timer would have to time out before an Outside Humidity Fail Alarm
would be active. The default setting is –10 minutes and a 0 setting will
disable the alarm.
LOW_HUMID_TIMER: Plenum Low Humidity Timer. If the Plenum Humidity were to fall below the Low
Plenum Humidity Setpoint, this timer would have to elapse before a Low
Humidity Alarm would be active. The default setting is -60 minutes and a
setting of 0 will disable the alarm. A negative setting will make the alarm soft
only and not shut down the system.
HIGH_CO2_TIMER: High CO2 Timer. If the CO2 level were to go above the CO2 Setpoint, this
timer would have to elapse before the High CO2 Alarm would be active. The
default setting is -60 minutes and a setting of 0 will disable the alarm.
A negative setting will make the alarm soft only and not shutdown the system.
PLEN_SEN_DIFF: Plenum Sensor Difference Alarm. The plenum has two sensors which are
averaged for accurate temperature control. If the reading between these two
sensors were to be greater than this setting, the plenum sensor fail timer
would start timing out for a Plenum Sensor Fail Alarm. This setting is in
1/10ths of a degree. The default setting is 10 or 1.0 degrees. A setting of 0
will disable this alarm.
CAVITY_CONFIG: Cavity Sensor Configuration. The cavity uses two sensors for control, one for
the cavity wall or cavity return air sensor and one for the pile sensor. The
configuration setting sets which sensors are used. The first number is the wall
sensor and the second number is the pile sensor.
Example: If P1 is to be the Pile Sensor and P8 to be the wall
sensor, then the setting would be 18. The default setting is
18.
MIN_REFRIG_RUN: Minimum Refrigeration Run. This setting will allow the refrigeration to run for a
minimum time, regardless of cooling air availability. Default setting is 30
minutes.
KP_1 Refrigeration proportional gain. The default value is 20. Increasing this value
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