L.J. Wing AireLogic, Руководство пользователя

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The pressure transducer compares the pressure outside the space to the pressure inside the
space and transmits a corresponding signal to the AireLogic controller. The controller
compares this signal to the desired user control setpoint (0.03”) and uses the
PID loop to
modulate the output from 0-100% (0-10Vdc). The output is connected to the VFD that
changes speed to maintain the specified building pressure.
If the building pressure is 0.03”, the output from the controller will be determined by the
PID control sequence, and the override will have no effect on the output.
If the building pressure is more than 0.03”, the output from the controller will be
determined by the
PID control sequence or the override whichever is less.
If the building pressure is less than 0.03”, the output from the controller will be
determined by the
PID control sequence or the override whichever is more.
Unit Resets
This section should assist the user in resetting alarms and cycle counters which have been
displayed on the
BACview .
ALARM
There are two methods that can be used to reset alarms on an MRT or MDT system. The
first is to remove the green screw terminal connector that has eight screw terminals on the
left-hand side of the unit control module. See Figure 4 below. This connector corresponds
to IN-1, IN-2, IN-3, IN-4, and their respective grounds. The plastic connector can be
removed directly from the side of the module without having to disconnect individual
wires from the screw terminal connector. Leave the connector disconnected for three
seconds before plugging it back into the controller. Do not leave the connector
disconnected for longer than three seconds.
Figure 4
The second method is to turn off the unit’s main disconnect switch. All active alarms will
be cleared. However, an alarm will regenerate if the alarm condition that triggered it is